G-protein coupled bile acid receptor 1-like isoform X1 [Danio rerio]
Protein Classification
7tmA_GPBAR1 domain-containing protein( domain architecture ID 11610353)
7tmA_GPBAR1 domain-containing protein
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||
| 7tmA_GPBAR1 | cd15905 | G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G ... |
29-326 | 6.20e-152 | |||||
G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G protein-coupled receptors; The G-protein coupled bile acid receptor GPBAR1 is also known as BG37, TGR5 (Takeda G-protein-coupled receptor 5), M-BAR (membrane-type receptor for bile acids), and GPR131. GPBAR1 is highly expressed in the gastrointestinal tract, but also found at many other tissues including liver, colon, heart, skeletal muscle, and brown adipose tissue. GPBAR1 functions as a membrane-bound receptor specific for bile acids, which are the end products of cholesterol metabolism that facilitate digestion and absorption of lipids or fat-soluble vitamins. Bile acids act as liver-specific metabolic signaling molecules and stimulate liver regeneration by activating GPBAR1 and nuclear receptors such as the farnesoid X receptor (FXR). Upon bile acids binding, GPBAR1 activation causes release of the G-alpha(s) subunit and activation of adenylate cyclase. The increase in intracellular cAMP level then stimulates the expression of many genes via the PKA-mediated phosphorylation of cAMP-response element binding protein (CREB). Thus, GPAR1-signalling exerts various biological effects in immune cells, liver, and metabolic tissues. For example, GPBAR1 activation leads to enhanced energy expenditure in brown adipose tissue and skeletal muscle; stimulation of glucagon-like peptide-1 (GLP-1) production in enteroendocrine L-cells; and inhibition of pro-inflammatory cytokine production in macrophages and attenuation of atherosclerosis development. GPBAR1 is a member of the class A rhodopsin-like family of GPCRs, which comprises receptors for hormones, neurotransmitters, sensory stimuli, and a variety of other ligands. : Pssm-ID: 320571 [Multi-domain] Cd Length: 272 Bit Score: 428.40 E-value: 6.20e-152
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| Name | Accession | Description | Interval | E-value | |||||
| 7tmA_GPBAR1 | cd15905 | G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G ... |
29-326 | 6.20e-152 | |||||
G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G protein-coupled receptors; The G-protein coupled bile acid receptor GPBAR1 is also known as BG37, TGR5 (Takeda G-protein-coupled receptor 5), M-BAR (membrane-type receptor for bile acids), and GPR131. GPBAR1 is highly expressed in the gastrointestinal tract, but also found at many other tissues including liver, colon, heart, skeletal muscle, and brown adipose tissue. GPBAR1 functions as a membrane-bound receptor specific for bile acids, which are the end products of cholesterol metabolism that facilitate digestion and absorption of lipids or fat-soluble vitamins. Bile acids act as liver-specific metabolic signaling molecules and stimulate liver regeneration by activating GPBAR1 and nuclear receptors such as the farnesoid X receptor (FXR). Upon bile acids binding, GPBAR1 activation causes release of the G-alpha(s) subunit and activation of adenylate cyclase. The increase in intracellular cAMP level then stimulates the expression of many genes via the PKA-mediated phosphorylation of cAMP-response element binding protein (CREB). Thus, GPAR1-signalling exerts various biological effects in immune cells, liver, and metabolic tissues. For example, GPBAR1 activation leads to enhanced energy expenditure in brown adipose tissue and skeletal muscle; stimulation of glucagon-like peptide-1 (GLP-1) production in enteroendocrine L-cells; and inhibition of pro-inflammatory cytokine production in macrophages and attenuation of atherosclerosis development. GPBAR1 is a member of the class A rhodopsin-like family of GPCRs, which comprises receptors for hormones, neurotransmitters, sensory stimuli, and a variety of other ligands. Pssm-ID: 320571 [Multi-domain] Cd Length: 272 Bit Score: 428.40 E-value: 6.20e-152
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| 7tm_1 | pfam00001 | 7 transmembrane receptor (rhodopsin family); This family contains, amongst other ... |
44-321 | 5.56e-15 | |||||
7 transmembrane receptor (rhodopsin family); This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins. Pssm-ID: 459624 [Multi-domain] Cd Length: 256 Bit Score: 73.87 E-value: 5.56e-15
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| Name | Accession | Description | Interval | E-value | ||||||
| 7tmA_GPBAR1 | cd15905 | G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G ... |
29-326 | 6.20e-152 | ||||||
G protein-coupled bile acid receptor 1, member of the class A family of seven-transmembrane G protein-coupled receptors; The G-protein coupled bile acid receptor GPBAR1 is also known as BG37, TGR5 (Takeda G-protein-coupled receptor 5), M-BAR (membrane-type receptor for bile acids), and GPR131. GPBAR1 is highly expressed in the gastrointestinal tract, but also found at many other tissues including liver, colon, heart, skeletal muscle, and brown adipose tissue. GPBAR1 functions as a membrane-bound receptor specific for bile acids, which are the end products of cholesterol metabolism that facilitate digestion and absorption of lipids or fat-soluble vitamins. Bile acids act as liver-specific metabolic signaling molecules and stimulate liver regeneration by activating GPBAR1 and nuclear receptors such as the farnesoid X receptor (FXR). Upon bile acids binding, GPBAR1 activation causes release of the G-alpha(s) subunit and activation of adenylate cyclase. The increase in intracellular cAMP level then stimulates the expression of many genes via the PKA-mediated phosphorylation of cAMP-response element binding protein (CREB). Thus, GPAR1-signalling exerts various biological effects in immune cells, liver, and metabolic tissues. For example, GPBAR1 activation leads to enhanced energy expenditure in brown adipose tissue and skeletal muscle; stimulation of glucagon-like peptide-1 (GLP-1) production in enteroendocrine L-cells; and inhibition of pro-inflammatory cytokine production in macrophages and attenuation of atherosclerosis development. GPBAR1 is a member of the class A rhodopsin-like family of GPCRs, which comprises receptors for hormones, neurotransmitters, sensory stimuli, and a variety of other ligands. Pssm-ID: 320571 [Multi-domain] Cd Length: 272 Bit Score: 428.40 E-value: 6.20e-152
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| 7tm_classA_rhodopsin-like | cd00637 | rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ... |
27-326 | 3.63e-23 | ||||||
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor superfamily; Class A rhodopsin-like receptors constitute about 90% of all GPCRs. The class A GPCRs include the light-sensitive rhodopsin as well as receptors for biogenic amines, lipids, nucleotides, odorants, peptide hormones, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Based on sequence similarity, GPCRs can be divided into six major classes: class A (rhodopsin-like family), class B (Methuselah-like, adhesion and secretin-like receptor family), class C (metabotropic glutamate receptor family), class D (fungal mating pheromone receptors), class E (cAMP receptor family), and class F (frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections. Pssm-ID: 410626 [Multi-domain] Cd Length: 275 Bit Score: 96.97 E-value: 3.63e-23
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| 7tmA_amine_R-like | cd14967 | amine receptors and similar proteins, member of the class A family of seven-transmembrane G ... |
31-329 | 1.36e-19 | ||||||
amine receptors and similar proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; Amine receptors of the class A family of GPCRs include adrenoceptors, 5-HT (serotonin) receptors, muscarinic cholinergic receptors, dopamine receptors, histamine receptors, and trace amine receptors. The receptors of amine subfamily are major therapeutic targets for the treatment of neurological disorders and psychiatric diseases. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320098 [Multi-domain] Cd Length: 259 Bit Score: 86.85 E-value: 1.36e-19
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| 7tmA_Adenosine_R | cd14968 | adenosine receptor subfamily, member of the class A family of seven-transmembrane G ... |
34-308 | 4.32e-16 | ||||||
adenosine receptor subfamily, member of the class A family of seven-transmembrane G protein-coupled receptors; The adenosine receptors (or P1 receptors), a family of G protein-coupled purinergic receptors, bind adenosine as their endogenous ligand. There are four types of adenosine receptors in human, designated as A1, A2A, A2B, and A3. Each type is encoded by a different gene and has distinct functions with some overlap. For example, both A1 and A2A receptors are involved in regulating myocardial oxygen consumption and coronary blood flow in the heart, while the A2A receptor also has a broad spectrum of anti-inflammatory effects in the body. These two receptors also expressed in the brain, where they have important roles in the release of other neurotransmitters such as dopamine and glutamate, while the A2B and A3 receptors found primarily in the periphery and play important roles in inflammation and immune responses. The A1 and A3 receptors preferentially interact with G proteins of the G(i/o) family, thereby lowering the intracellular cAMP levels, whereas the A2A and A2B receptors interact with G proteins of the G(s) family, activating adenylate cyclase to elevate cAMP levels. Pssm-ID: 341316 [Multi-domain] Cd Length: 285 Bit Score: 77.30 E-value: 4.32e-16
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| 7tmA_Opsins_type2_animals | cd14969 | type 2 opsins in animals, member of the class A family of seven-transmembrane G ... |
32-283 | 5.20e-16 | ||||||
type 2 opsins in animals, member of the class A family of seven-transmembrane G protein-coupled receptors; This rhodopsin family represents the type 2 opsins found in vertebrates and invertebrates except sponge. Type 2 opsins primarily function as G protein coupled receptors and are responsible for vision as well as for circadian rhythm and pigment regulation. On the contrary, type 1 opsins such as bacteriorhodopsin and proteorhodopsin are found in both prokaryotic and eukaryotic microbes, functioning as light-gated ion channels, proton pumps, sensory receptors and in other unknown functions. Although these two opsin types share seven-transmembrane domain topology and a conserved lysine reside in the seventh helix, type 1 opsins do not activate G-proteins and are not evolutionarily related to type 2. Type 2 opsins can be classified into six distinct subfamilies including the vertebrate opsins/encephalopsins, the G(o) opsins, the G(s) opsins, the invertebrate G(q) opsins, the photoisomerases, and the neuropsins. Pssm-ID: 381741 [Multi-domain] Cd Length: 284 Bit Score: 77.25 E-value: 5.20e-16
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| 7tmA_Adenosine_R_A2B | cd15069 | adenosine receptor subtype 2AB, member of the class A family of seven-transmembrane G ... |
32-329 | 1.55e-15 | ||||||
adenosine receptor subtype 2AB, member of the class A family of seven-transmembrane G protein-coupled receptors; The A2B receptor, a member of the adenosine receptor family of G protein-coupled receptors, binds adenosine as its endogenous ligand and is involved in regulating myocardial oxygen consumption and coronary blood flow. High-affinity A2A and low-affinity A2B receptors are preferentially coupled to G proteins of the stimulatory (Gs) family, which lead to activation of adenylate cyclase and thereby increasing the intracellular cAMP levels. The A2A receptor activation protects against tissue injury and acts as anti-inflammatory agent. In human skin endothelial cells, activation of A2B receptor, but not the A2A receptor, promotes angiogenesis. Alternatively, activated A2A receptor, but not the A2B receptor, promotes angiogenesis in human umbilical vein and lung microvascular endothelial cells. The A2A receptor alters cardiac contractility indirectly by modulating the anti-adrenergic effect of A1 receptor, while the A2B receptor exerts direct effects on cardiac contractile function, but does not modulate beta-adrenergic or A1 anti-adrenergic effects. Pssm-ID: 320197 [Multi-domain] Cd Length: 294 Bit Score: 76.12 E-value: 1.55e-15
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| 7tm_1 | pfam00001 | 7 transmembrane receptor (rhodopsin family); This family contains, amongst other ... |
44-321 | 5.56e-15 | ||||||
7 transmembrane receptor (rhodopsin family); This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins. Pssm-ID: 459624 [Multi-domain] Cd Length: 256 Bit Score: 73.87 E-value: 5.56e-15
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| 7tmA_Histamine_H2R | cd15051 | histamine subtype H2 receptor, member of the class A family of seven-transmembrane G ... |
32-284 | 5.18e-14 | ||||||
histamine subtype H2 receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes histamine receptor subtype H2R, a member of histamine receptor family, which belongs to the class A of GPCRs. Histamine plays a key role as chemical mediator and neurotransmitter in various physiological and pathophysiological processes in the central and peripheral nervous system. Histamine exerts its functions by binding to four different G protein-coupled receptors (H1-H4). The H2R subtype selectively interacts with the G(s)-type G protein that activates adenylate cyclase, leading to increased cAMP production and activation of Protein Kinase A. H2R is found in various tissues such as the brain, stomach, and heart. Its most prominent role is in histamine-induced gastric acid secretion. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320179 [Multi-domain] Cd Length: 287 Bit Score: 71.59 E-value: 5.18e-14
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| 7tmA_GPR119_R_insulinotropic_receptor | cd15104 | G protein-coupled receptor 119, also called glucose-dependent insulinotropic receptor, member ... |
36-283 | 2.34e-13 | ||||||
G protein-coupled receptor 119, also called glucose-dependent insulinotropic receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; GPR119 is activated by oleoylethanolamide (OEA), a naturally occurring bioactive lipid with hypophagic and anti-obesity effects. Immunohistochemistry and double-immunofluorescence studies revealed the predominant GPR119 localization in pancreatic polypeptide (PP)-cells of islets. In addition, GPR119 expression is elevated in islets of obese hyperglycemic mice as compared to control islets, suggesting a possible involvement of this receptor in the development of obesity and diabetes. GPR119 has a significant sequence similarity with the members of the endothelial differentiation gene family. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320232 [Multi-domain] Cd Length: 283 Bit Score: 69.32 E-value: 2.34e-13
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| 7tmA_EDG-like | cd14972 | endothelial differentiation gene family, member of the class A family of seven-transmembrane G ... |
31-337 | 1.69e-12 | ||||||
endothelial differentiation gene family, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represents the endothelial differentiation gene (Edg) family of G-protein coupled receptors, melanocortin/ACTH receptors, and cannabinoid receptors as well as their closely related receptors. The Edg GPCRs bind blood borne lysophospholipids including sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), which are involved in the regulation of cell proliferation, survival, migration, invasion, endothelial cell shape change and cytoskeletal remodeling. The Edg receptors are classified into two subfamilies: the lysophosphatidic acid subfamily that includes LPA1 (Edg2), LPA2 (Edg4), and LPA3 (Edg7); and the S1P subfamily that includes S1P1 (Edg1), S1P2 (Edg5), S1P3 (Edg3), S1P4 (Edg6), and S1P5 (Edg8). Melanocortin receptors bind a group of pituitary peptide hormones known as melanocortins, which include adrenocorticotropic hormone (ACTH) and the different isoforms of melanocyte-stimulating hormones. Two types of cannabinoid receptors, CB1 and CB2, are activated by naturally occurring endocannabinoids, cannabis plant-derived cannabinoids such as tetrahydrocannabinol, or synthetic cannabinoids. The CB receptors are involved in the various physiological processes such as appetite, mood, memory, and pain sensation. CB1 receptor is expressed predominantly in central and peripheral neurons, while CB2 receptor is found mainly in the immune system. Pssm-ID: 341317 [Multi-domain] Cd Length: 275 Bit Score: 66.93 E-value: 1.69e-12
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| 7tmA_TAARs | cd15055 | trace amine-associated receptors, member of the class A family of seven-transmembrane G ... |
31-324 | 3.50e-10 | ||||||
trace amine-associated receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; The trace amine-associated receptors (TAARs) are a distinct subfamily within the class A G protein-coupled receptor family. Trace amines are endogenous amines of unknown function that have strong structural and metabolic similarity to classical monoamine neurotransmitters (serotonin, noradrenaline, adrenaline, dopamine, and histamine), which play critical roles in human and animal physiological activities such as cognition, consciousness, mood, motivation, perception, and autonomic responses. However, trace amines are found in the mammalian brain at very low concentrations compared to classical monoamines. Trace amines, including p-tyramine, beta-phenylethylamine, and tryptamine, are also thought to act as chemical messengers to exert their biological effects in vertebrates. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320183 [Multi-domain] Cd Length: 285 Bit Score: 60.26 E-value: 3.50e-10
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| 7tmA_Beta_AR | cd15058 | beta adrenergic receptors (adrenoceptors), member of the class A family of seven-transmembrane ... |
32-321 | 5.30e-10 | ||||||
beta adrenergic receptors (adrenoceptors), member of the class A family of seven-transmembrane G protein-coupled receptors; The beta adrenergic receptor (beta adrenoceptor), also known as beta AR, is activated by hormone adrenaline (epinephrine) and plays important roles in regulating cardiac function and heart rate, as well as pulmonary physiology. The human heart contains three subtypes of the beta AR: beta-1 AR, beta-2 AR, and beta-3 AR. Beta-1 AR and beta-2 AR, which expressed at about a ratio of 70:30, are the major subtypes involved in modulating cardiac contractility and heart rate by positively stimulating the G(s) protein-adenylate cyclase-cAMP-PKA signaling pathway. In contrast, beta-3 AR produces negative inotropic effects by activating inhibitory G(i) proteins. The aberrant expression of beta-ARs can lead to cardiac dysfunction such as arrhythmias or heart failure. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320186 [Multi-domain] Cd Length: 305 Bit Score: 59.77 E-value: 5.30e-10
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| 7tmA_Adenosine_R_A2A | cd15068 | adenosine receptor subtype A2A, member of the class A family of seven-transmembrane G ... |
32-280 | 7.94e-10 | ||||||
adenosine receptor subtype A2A, member of the class A family of seven-transmembrane G protein-coupled receptors; The A2A receptor, a member of the adenosine receptor family of G protein-coupled receptors, binds adenosine as its endogenous ligand and is involved in regulating myocardial oxygen consumption and coronary blood flow. High-affinity A2A and low-affinity A2B receptors are preferentially coupled to G proteins of the stimulatory (Gs) family, which lead to activation of adenylate cyclase and thereby increasing the intracellular cAMP levels. The A2A receptor activation protects against tissue injury and acts as anti-inflammatory agent. In human skin endothelial cells, activation of A2B receptor, but not the A2A receptor, promotes angiogenesis. Alternatively, activated A2A receptor, but not the A2B receptor, promotes angiogenesis in human umbilical vein and lung microvascular endothelial cells. The A2A receptor alters cardiac contractility indirectly by modulating the anti-adrenergic effect of A1 receptor, while the A2B receptor exerts direct effects on cardiac contractile function, but does not modulate beta-adrenergic or A1 anti-adrenergic effects. Pssm-ID: 320196 [Multi-domain] Cd Length: 293 Bit Score: 59.18 E-value: 7.94e-10
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| 7tmA_Adenosine_R_A1 | cd15071 | adenosine receptor subtype A1, member of the class A family of seven-transmembrane G ... |
34-329 | 8.13e-10 | ||||||
adenosine receptor subtype A1, member of the class A family of seven-transmembrane G protein-coupled receptors; The adenosine A1 receptor, a member of the adenosine receptor family of G protein-coupled receptors, binds adenosine as its endogenous ligand. The A1 receptor has primarily inhibitory function on the tissues in which it is located. The A1 receptor slows metabolic activity in the brain and has a strong anti-adrenergic effects in the heart. Thus, it antagonizes beta1-adrenergic receptor-induced stimulation and thereby reduces cardiac contractility. The A1 receptor preferentially couples to G proteins of the G(i/o) family, which lead to inhibition of adenylate cyclase and thereby lowering the intracellular cAMP levels. Pssm-ID: 341323 [Multi-domain] Cd Length: 290 Bit Score: 59.09 E-value: 8.13e-10
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| 7tmA_tyramine_R-like | cd15061 | tyramine receptors and similar proteins, member of the class A family of seven-transmembrane G ... |
39-329 | 2.75e-09 | ||||||
tyramine receptors and similar proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes tyramine-specific receptors and similar proteins found in insects and other invertebrates. These tyramine receptors form a distinct receptor family that is phylogenetically different from the other tyramine/octopamine receptors which also found in invertebrates. Both octopamine and tyramine mediate their actions via G protein-coupled receptors (GPCRs) and are the invertebrate equivalent of vertebrate adrenergic neurotransmitters. In Drosophila, octopamine is involved in ovulation by mediating an egg release from the ovary, while a physiological role for tyramine in this process is not fully understood. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320189 [Multi-domain] Cd Length: 256 Bit Score: 56.98 E-value: 2.75e-09
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| 7tmA_Opsin_Gq_invertebrates | cd15337 | invertebrate Gq opsins, member of the class A family of seven-transmembrane G protein-coupled ... |
41-290 | 3.20e-09 | ||||||
invertebrate Gq opsins, member of the class A family of seven-transmembrane G protein-coupled receptors; The invertebrate Gq-coupled opsin subfamily includes the arthropod and mollusc visual opsins. Like the vertebrate visual opsins, arthropods possess color vision by the use of multiple opsins sensitive to different light wavelengths. The invertebrate Gq opsins are closely related to the vertebrate melanopsins, the primary photoreceptor molecules for non-visual responses to light, and the R1-R6 photoreceptors, which are the fly equivalent to the vertebrate rods. The Gq opsins belong the class A of the G protein-coupled receptors and possess seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 320459 [Multi-domain] Cd Length: 292 Bit Score: 57.33 E-value: 3.20e-09
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| 7tmA_Melanopsin-like | cd15083 | vertebrate melanopsins and related opsins, member of the class A family of seven-transmembrane ... |
43-297 | 8.96e-09 | ||||||
vertebrate melanopsins and related opsins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represent the Gq-coupled rhodopsin subfamily consists of melanopsins, insect photoreceptors R1-R6, invertebrate Gq opsins as well as their closely related opsins. Melanopsins (also called Opsin-4) are the primary photoreceptor molecules for non-visual functions such as the photo-entrainment of the circadian rhythm and pupillary constriction in mammals. Mammalian melanopsins are expressed only in the inner retina, whereas non-mammalian vertebrate melanopsins are localized in various extra-retinal tissues such as iris, brain, pineal gland, and skin. The outer photoreceptors (R1-R6) are the insect Drosophila equivalent to the vertebrate rods and are responsible for image formation and motion detection. The invertebrate G(q) opsins includes the arthropod and mollusk visual opsins as well as invertebrate melanopsins, which are also found in vertebrates. Arthropods possess color vision by the use of multiple opsins sensitive to different light wavelengths. Members of this subfamily belong to the class A of the G protein-coupled receptors and have seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 320211 [Multi-domain] Cd Length: 291 Bit Score: 55.80 E-value: 8.96e-09
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| 7tmA_Histamine_H3R_H4R | cd15048 | histamine receptor subtypes H3R and H4R, member of the class A family of seven-transmembrane G ... |
36-287 | 1.01e-08 | ||||||
histamine receptor subtypes H3R and H4R, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes histamine subtypes H3R and H4R, members of the histamine receptor family, which belong to the class A of GPCRs. Histamine plays a key role as chemical mediator and neurotransmitter in various physiological and pathophysiological processes in the central and peripheral nervous system. Histamine exerts its functions by binding to four different G protein-coupled receptors (H1-H4). The H3 and H4 receptors couple to the G(i)-proteins, which leading to the inhibition of cAMP formation. The H3R receptor functions as a presynaptic autoreceptors controlling histamine release and synthesis. The H4R plays an important role in histamine-mediated chemotaxis in mast cells and eosinophils. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320176 [Multi-domain] Cd Length: 296 Bit Score: 55.77 E-value: 1.01e-08
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| 7tmA_5-HT4 | cd15056 | serotonin receptor subtype 4, member of the class A family of seven-transmembrane G ... |
36-283 | 1.48e-08 | ||||||
serotonin receptor subtype 4, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT4 subtype is a member of the serotonin receptor family that belongs to the class A G protein-coupled receptors, and binds the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the mammalian central nervous system (CNS). 5-HT4 receptors are selectively linked to G proteins of the G(s) family, which positively stimulate adenylate cyclase, causing cAMP formation and activation of protein kinase A. 5-HT4 receptor-specific agonists have been shown to enhance learning and memory in animal studies. Moreover, hippocampal 5-HT4 receptor expression has been reported to be inversely correlated with memory performance in humans. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320184 [Multi-domain] Cd Length: 294 Bit Score: 55.19 E-value: 1.48e-08
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| 7tmA_Ap5-HTB1-like | cd15065 | serotonin receptor subtypes B1 and B2 from Aplysia californica and similar proteins; member of ... |
36-329 | 2.24e-08 | ||||||
serotonin receptor subtypes B1 and B2 from Aplysia californica and similar proteins; member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes Aplysia californica serotonin receptors Ap5-HTB1 and Ap5-HTB2, and similar proteins from bilateria including insects, mollusks, annelids, and worms. Ap5-HTB1 is one of the several different receptors for 5-hydroxytryptamine (5HT, serotonin). In Aplysia, serotonin plays important roles in a variety of behavioral and physiological processes mediated by the central nervous system. These include circadian clock, feeding, locomotor movement, cognition and memory, synaptic growth and synaptic plasticity. Both Ap5-HTB1 and Ap5-HTB2 receptors are coupled to G-proteins that stimulate phospholipase C, leading to the activation of phosphoinositide metabolism. Ap5-HTB1 is expressed in the reproductive system, whereas Ap5-HTB2 is expressed in the central nervous system. Pssm-ID: 320193 [Multi-domain] Cd Length: 300 Bit Score: 54.66 E-value: 2.24e-08
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| 7tmA_D1-like_dopamine_R | cd15057 | D1-like family of dopamine receptors, member of the class A family of seven-transmembrane G ... |
36-283 | 2.75e-08 | ||||||
D1-like family of dopamine receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Dopamine receptors are members of the class A G protein-coupled receptors that are involved in many neurological processes in the central nervous system (CNS). The neurotransmitter dopamine is the primary endogenous agonist for dopamine receptors. Dopamine receptors consist of at least five subtypes: D1, D2, D3, D4, and D5. The D1 and D5 subtypes are members of the D1-like family of dopamine receptors, whereas the D2, D3 and D4 subtypes are members of the D2-like family. The D1-like family receptors are coupled to G proteins of the G(s) family, which activate adenylate cyclase, causing cAMP formation and activation of protein kinase A. In contrast, activation of D2-like family receptors is linked to G proteins of the G(i) family, which inhibit adenylate cyclase. Dopamine receptors are major therapeutic targets for neurological and psychiatric disorders such as drug abuse, depression, schizophrenia, or Parkinson's disease. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320185 [Multi-domain] Cd Length: 299 Bit Score: 54.36 E-value: 2.75e-08
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| 7tmA_5-HT2A | cd15304 | serotonin receptor subtype 2A, member of the class A family of seven-transmembrane G ... |
32-329 | 2.88e-07 | ||||||
serotonin receptor subtype 2A, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT2 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the central nervous system (CNS). The 5-HT2 subfamily is composed of three subtypes that mediate excitatory neurotransmission: 5-HT2A, 5-HT2B, and 5-HT2C. They are selectively linked to G proteins of the G(q/11) family and activate phospholipase C, which leads to activation of protein kinase C and calcium release. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in diseases such as migraine, schizophrenia, and depression. Indeed, 5-HT2 receptors are attractive targets for a variety of psychoactive drugs, ranging from atypical antipsychotic drugs, antidepressants, and anxiolytics, which have an antagonistic action on 5-HT2 receptors, to hallucinogens, which act as agonists at postsynaptic 5-HT2 receptors. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 341345 [Multi-domain] Cd Length: 267 Bit Score: 51.09 E-value: 2.88e-07
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| 7tmA_OR | cd13954 | olfactory receptors, member of the class A family of seven-transmembrane G protein-coupled ... |
28-160 | 3.19e-07 | ||||||
olfactory receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320092 [Multi-domain] Cd Length: 270 Bit Score: 50.94 E-value: 3.19e-07
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| 7tmA_Adenosine_R_A3 | cd15070 | adenosine receptor subtype A3, member of the class A family of seven-transmembrane G ... |
44-283 | 3.38e-07 | ||||||
adenosine receptor subtype A3, member of the class A family of seven-transmembrane G protein-coupled receptors; The A3 receptor, a member of the adenosine receptor family of G protein-coupled receptors, is coupled to G proteins of the inhibitory G(i) family, which lead to inhibition of adenylate cyclase and thereby lowering the intracellular cAMP levels. The A3 receptor has a sustained protective function in the heart during cardiac ischemia and contributes to inhibition of neutrophil degranulation in neutrophil-mediated tissue injury. Moreover, activation of A3 receptor by adenosine protects astrocytes from cell death induced by hypoxia. Pssm-ID: 320198 [Multi-domain] Cd Length: 280 Bit Score: 50.93 E-value: 3.38e-07
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| 7tmA_OR1A-like | cd15235 | olfactory receptor subfamily 1A and related proteins, member of the class A family of ... |
26-157 | 3.89e-07 | ||||||
olfactory receptor subfamily 1A and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 1A, 1B, 1K, 1L, 1Q and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320363 [Multi-domain] Cd Length: 278 Bit Score: 50.68 E-value: 3.89e-07
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| 7tmA_TAAR5-like | cd15317 | trace amine-associated receptor 5 and similar receptors, member of the class A family of ... |
28-283 | 6.08e-07 | ||||||
trace amine-associated receptor 5 and similar receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Included in this group are mammalian TAAR5, TAAR6, TAAR8, TAAR9, and similar proteins. They are among the 15 identified trace amine-associated receptors (TAARs), a distinct subfamily within the class A G protein-coupled receptors. Trace amines are endogenous amines of unknown function that have strong structural and metabolic similarity to classical monoamine neurotransmitters (serotonin, noradrenaline, adrenaline, dopamine, and histamine), which play critical roles in human and animal physiological activities such as cognition, consciousness, mood, motivation, perception, and autonomic responses. However, trace amines are found in the mammalian brain at very low concentrations compared to classical monoamines. Trace amines, including p-tyramine, beta-phenylethylamine, and tryptamine, are also thought to act as chemical messengers to exert their biological effects in vertebrates. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320440 [Multi-domain] Cd Length: 290 Bit Score: 50.52 E-value: 6.08e-07
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| 7tmA_FMRFamide_R-like | cd14978 | FMRFamide (Phe-Met-Arg-Phe) receptors and related proteins, member of the class A family of ... |
31-289 | 6.25e-07 | ||||||
FMRFamide (Phe-Met-Arg-Phe) receptors and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes Drosophila melanogaster G-protein coupled FMRFamide (Phe-Met-Arg-Phe-NH2) receptor DrmFMRFa-R and related invertebrate receptors, as well as the vertebrate proteins GPR139 and GPR142. DrmFMRFa-R binds with high affinity to FMRFamide and intrinsic FMRFamide-related peptides. FMRFamide is a neuropeptide from the family of FMRFamide-related peptides (FaRPs), which all containing a C-terminal RFamide (Arg-Phe-NH2) motif and have diverse functions in the central and peripheral nervous systems. FMRFamide is an important neuropeptide in many types of invertebrates such as insects, nematodes, molluscs, and worms. In invertebrates, the FMRFamide-related peptides are involved in the regulation of heart rate, blood pressure, gut motility, feeding behavior, and reproduction. On the other hand, in vertebrates such as mice, they play a role in the modulation of morphine-induced antinociception. Orphan receptors GPR139 and GPR142 are very closely related G protein-coupled receptors, but they have different expression patterns in the brain and in other tissues. These receptors couple to inhibitory G proteins and activate phospholipase C. Studies suggested that dimer formation may be required for their proper function. GPR142 is predominantly expressed in pancreatic beta-cells and mediates enhancement of glucose-stimulated insulin secretion, whereas GPR139 is mostly expressed in the brain and is suggested to play a role in the control of locomotor activity. Tryptophan and phenylalanine have been identified as putative endogenous ligands of GPR139. Pssm-ID: 410630 [Multi-domain] Cd Length: 299 Bit Score: 50.32 E-value: 6.25e-07
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| 7tmA_GHSR-like | cd15928 | growth hormone secretagogue receptor, motilin receptor, and related proteins, member of the ... |
34-329 | 8.72e-07 | ||||||
growth hormone secretagogue receptor, motilin receptor, and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes growth hormone secretagogue receptor (GHSR or ghrelin receptor), motilin receptor (also called GPR38), and related proteins. Both GHSR and GPR38 bind peptide hormones. Ghrelin, the endogenous ligand for GHSR, is an acylated 28-amino acid peptide hormone produced by ghrelin cells in the gastrointestinal tract. Ghrelin is also called the hunger hormone and is involved in the regulation of growth hormone release, appetite and feeding, gut motility, lipid and glucose metabolism, and energy balance. Motilin, the ligand for GPR38, is a 22 amino acid peptide hormone expressed throughout the gastrointestinal tract and stimulates contraction of gut smooth muscle. It is involved in the regulation of digestive tract motility. Pssm-ID: 320594 [Multi-domain] Cd Length: 288 Bit Score: 49.80 E-value: 8.72e-07
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| 7tmA_tyramine_octopamine_R-like | cd15060 | tyramine/octopamine receptor-like, member of the class A family of seven-transmembrane G ... |
32-173 | 1.22e-06 | ||||||
tyramine/octopamine receptor-like, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes tyramine/octopamine receptors and similar proteins found in insects and other invertebrates. Both octopamine and tyramine mediate their actions via G protein-coupled receptors (GPCRs) and are the invertebrate equivalent of vertebrate adrenergic neurotransmitters. In Drosophila, octopamine is involved in ovulation by mediating an egg release from the ovary, while a physiological role for tyramine in this process is not fully understood. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320188 [Multi-domain] Cd Length: 260 Bit Score: 49.35 E-value: 1.22e-06
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| 7tmA_alpha1A_AR | cd15325 | alpha-1 adrenergic receptors subtype A, member of the class A family of seven-transmembrane G ... |
32-162 | 1.35e-06 | ||||||
alpha-1 adrenergic receptors subtype A, member of the class A family of seven-transmembrane G protein-coupled receptors; The alpha-1 adrenergic receptors (or adrenoceptors) are a subfamily of the class A rhodopsin-like GPCRs that share a common architecture of seven transmembrane helices. This subfamily consists of three highly homologous receptor subtypes that primarily mediate smooth muscle contraction: alpha-1A, alpha-1B, and alpha-1D. Activation of alpha-1 receptors by catecholamines such as norepinephrine and epinephrine couples to the G(q) protein, which then activates the phospholipase C pathway, leading to an increase in IP3 and calcium. Consequently, the elevation of intracellular calcium concentration leads to vasoconstriction in smooth muscle of blood vessels. In addition, activation of alpha-1 receptors by phenylpropanolamine (PPA) produces anorexia and may induce appetite suppression in rats. Pssm-ID: 320448 [Multi-domain] Cd Length: 261 Bit Score: 49.12 E-value: 1.35e-06
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| 7tmA_Beta2_AR | cd15957 | beta-2 adrenergic receptors (adrenoceptors), member of the class A family of ... |
39-321 | 1.35e-06 | ||||||
beta-2 adrenergic receptors (adrenoceptors), member of the class A family of seven-transmembrane G protein-coupled receptors; Beta-2 AR is activated by adrenaline that plays important roles in cardiac function and pulmonary physiology. While beta-1 AR and beta-2 AR are the major subtypes involved in modulating cardiac contractility and heart rate by positively stimulating the G(s) protein-adenylate cyclase-cAMP-PKA signaling pathway, beta-2 AR can couple to both G(s) and G(i) proteins in the heart. Moreover, beta-2 AR activation leads to smooth muscle relaxation and bronchodilation in the lung. The beta adrenergic receptors are a subfamily of the class A rhodopsin-like G protein-coupled receptors. Pssm-ID: 341355 [Multi-domain] Cd Length: 301 Bit Score: 49.48 E-value: 1.35e-06
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| 7tmA_alpha1_AR | cd15062 | alpha-1 adrenergic receptors, member of the class A family of seven-transmembrane G ... |
32-329 | 1.67e-06 | ||||||
alpha-1 adrenergic receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; The alpha-1 adrenergic receptors (or adrenoceptors) are a subfamily of the class A rhodopsin-like GPCRs that share a common architecture of seven transmembrane helices. This subfamily consists of three highly homologous receptor subtypes that primarily mediate smooth muscle contraction: alpha-1A, alpha-1B, and alpha-1D. Activation of alpha-1 receptors by catecholamines such as norepinephrine and epinephrine couples to the G(q) protein, which then activates the phospholipase C pathway, leading to an increase in IP3 and calcium. Consequently, the elevation of intracellular calcium concentration leads to vasoconstriction in smooth muscle of blood vessels. In addition, activation of alpha-1 receptors by phenylpropanolamine (PPA) produces anorexia and may induce appetite suppression in rats. Pssm-ID: 320190 [Multi-domain] Cd Length: 261 Bit Score: 48.64 E-value: 1.67e-06
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| 7tmA_Parietopsin | cd15085 | non-visual parietopsins, member of the class A family of seven-transmembrane G protein-coupled ... |
41-331 | 2.23e-06 | ||||||
non-visual parietopsins, member of the class A family of seven-transmembrane G protein-coupled receptors; Parietopsin is a non-visual green light-sensitive opsin that was initially identified in the parietal eye of lizards. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells. They are thought to be involved in light-dependent physiological functions such as photo-entrainment of circadian rhythm, photoperiodicity and body color change. Parietopsin belongs to the class A of the G protein-coupled receptors and shows strong homology to the vertebrate visual opsins. Pssm-ID: 320213 [Multi-domain] Cd Length: 280 Bit Score: 48.70 E-value: 2.23e-06
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| 7tmA_5-HT1_5_7 | cd15064 | serotonin receptor subtypes 1, 5 and 7, member of the class A family of seven-transmembrane G ... |
32-286 | 3.91e-06 | ||||||
serotonin receptor subtypes 1, 5 and 7, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes serotonin receptor subtypes 1, 5, and 7 that are activated by the neurotransmitter serotonin. The 5-HT1 and 5-HT5 receptors mediate inhibitory neurotransmission by coupling to G proteins of the G(i/o) family. The 5-HT1 receptor subfamily includes 5-HT1A, 5-HT1B, 5-HT1D, 5-HT1E, and 5-HT1F. There is no 5-HT1C receptor subtype, as it has been reclassified as 5-HT2C receptor. The 5-HT5A and 5-HT5B receptors have been cloned from rat and mouse, but only the 5-HT5A isoform has been identified in human because of the presence of premature stop codons in the human 5-HT5B gene, which prevents a functional receptor from being expressed. The 5-HT7 receptor is coupled to Gs, which positively stimulates adenylate cyclase activity, leading to increased intracellular cAMP formation and calcium influx. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in neurologic disorders such as migraine, schizophrenia, and depression. Pssm-ID: 320192 [Multi-domain] Cd Length: 258 Bit Score: 47.71 E-value: 3.91e-06
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| 7tmA_OR5V1-like | cd15231 | olfactory receptor subfamily 5V1 and related proteins, member of the class A family of ... |
28-143 | 4.47e-06 | ||||||
olfactory receptor subfamily 5V1 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5V1 and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320359 [Multi-domain] Cd Length: 277 Bit Score: 47.64 E-value: 4.47e-06
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| 7tmA_OR8H-like | cd15411 | olfactory receptor subfamily 8H and related proteins, member of the class A family of ... |
29-143 | 5.51e-06 | ||||||
olfactory receptor subfamily 8H and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 8H, 8I, 5F and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320533 [Multi-domain] Cd Length: 279 Bit Score: 47.31 E-value: 5.51e-06
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| 7tmA_OR10S1-like | cd15941 | olfactory receptor subfamily 10S1 and related proteins, member of the class A family of ... |
28-131 | 6.71e-06 | ||||||
olfactory receptor subfamily 10S1 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 10S1 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320607 [Multi-domain] Cd Length: 277 Bit Score: 47.15 E-value: 6.71e-06
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| 7tmA_5-HT2_insect-like | cd15307 | serotonin receptor subtype 2 from insects, member of the class A family of seven-transmembrane ... |
41-338 | 8.13e-06 | ||||||
serotonin receptor subtype 2 from insects, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT2 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the central nervous system (CNS). The 5-HT2 subfamily is composed of three subtypes that mediate excitatory neurotransmission: 5-HT2A, 5-HT2B, and 5-HT2C. They are selectively linked to G proteins of the G(q/11) family and activate phospholipase C, which leads to activation of protein kinase C and calcium release. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in diseases such as migraine, schizophrenia, and depression. Indeed, 5-HT2 receptors are attractive targets for a variety of psychoactive drugs, ranging from atypical antipsychotic drugs, antidepressants, and anxiolytics, which have an antagonistic action on 5-HT2 receptors, to hallucinogens, which act as agonists at postsynaptic 5-HT2 receptors. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320433 [Multi-domain] Cd Length: 279 Bit Score: 46.87 E-value: 8.13e-06
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| 7tmA_alpha1D_AR | cd15327 | alpha-1 adrenergic receptors subtype D, member of the class A family of seven-transmembrane G ... |
38-329 | 8.19e-06 | ||||||
alpha-1 adrenergic receptors subtype D, member of the class A family of seven-transmembrane G protein-coupled receptors; The alpha-1 adrenergic receptors (or adrenoceptors) are a subfamily of the class A rhodopsin-like GPCRs that share a common architecture of seven transmembrane helices. This subfamily consists of three highly homologous receptor subtypes that primarily mediate smooth muscle contraction: alpha-1A, alpha-1B, and alpha-1D. Activation of alpha-1 receptors by catecholamines such as norepinephrine and epinephrine couples to the G(q) protein, which then activates the phospholipase C pathway, leading to an increase in IP3 and calcium. Consequently, the elevation of intracellular calcium concentration leads to vasoconstriction in smooth muscle of blood vessels. In addition, activation of alpha-1 receptors by phenylpropanolamine (PPA) produces anorexia and may induce appetite suppression in rats. Pssm-ID: 320450 [Multi-domain] Cd Length: 261 Bit Score: 46.83 E-value: 8.19e-06
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| 7tmA_OR13H-like | cd15431 | olfactory receptor subfamily 13H and related proteins, member of the class A family of ... |
28-161 | 9.28e-06 | ||||||
olfactory receptor subfamily 13H and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 13H and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320548 [Multi-domain] Cd Length: 269 Bit Score: 46.45 E-value: 9.28e-06
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| 7tmA_5-HT2C | cd15305 | serotonin receptor subtype 2C, member of the class A family of seven-transmembrane G ... |
39-329 | 9.43e-06 | ||||||
serotonin receptor subtype 2C, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT2 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the central nervous system (CNS). The 5-HT2 subfamily is composed of three subtypes that mediate excitatory neurotransmission: 5-HT2A, 5-HT2B, and 5-HT2C. They are selectively linked to G proteins of the G(q/11) family and activate phospholipase C, which leads to activation of protein kinase C and calcium release. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in diseases such as migraine, schizophrenia, and depression. Indeed, 5-HT2 receptors are attractive targets for a variety of psychoactive drugs, ranging from atypical antipsychotic drugs, antidepressants, and anxiolytics, which have an antagonistic action on 5-HT2 receptors, to hallucinogens, which act as agonists at postsynaptic 5-HT2 receptors. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 341346 [Multi-domain] Cd Length: 275 Bit Score: 46.44 E-value: 9.43e-06
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| 7tmA_TACR_family | cd14992 | tachykinin receptor and closely related proteins, member of the class A family of ... |
32-287 | 9.76e-06 | ||||||
tachykinin receptor and closely related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes G-protein coupled receptors for a variety of neuropeptides of the tachykinin (TK) family as well as closely related receptors. The tachykinins are widely distributed throughout the mammalian central and peripheral nervous systems and act as excitatory transmitters on neurons and cells in the gastrointestinal tract. The TKs are characterized by a common five-amino acid C-terminal sequence, Phe-X-Gly-Leu-Met-NH2, where X is a hydrophobic residue. The three major mammalian tachykinins are substance P (SP), neurokinin A (NKA), and neurokinin B (NKB). The physiological actions of tachykinins are mediated through three types of receptors: neurokinin receptor type 1 (NK1R), NK2R, and NK3R. SP is a high-affinity endogenous ligand for NK1R, which interacts with the Gq protein and activates phospholipase C, leading to elevation of intracellular calcium. NK2R is a high-affinity receptor for NKA, the tachykinin neuropeptide substance K. SP and NKA are found in the enteric nervous system and mediate in the regulation of gastrointestinal motility, secretion, vascular permeability, and pain perception. NK3R is activated by its high-affinity ligand, NKB, which is primarily involved in the central nervous system and plays a critical role in the regulation of gonadotropin hormone release and the onset of puberty. Pssm-ID: 320123 [Multi-domain] Cd Length: 291 Bit Score: 46.66 E-value: 9.76e-06
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| 7tmA_alpha1B_AR | cd15326 | alpha-1 adrenergic receptors subtype B, member of the class A family of seven-transmembrane G ... |
38-162 | 1.26e-05 | ||||||
alpha-1 adrenergic receptors subtype B, member of the class A family of seven-transmembrane G protein-coupled receptors; The alpha-1 adrenergic receptors (or adrenoceptors) are a subfamily of the class A rhodopsin-like GPCRs that share a common architecture of seven transmembrane helices. This subfamily consists of three highly homologous receptor subtypes that primarily mediate smooth muscle contraction: alpha-1A, alpha-1B, and alpha-1D. Activation of alpha-1 receptors by catecholamines such as norepinephrine and epinephrine couples to the G(q) protein, which then activates the phospholipase C pathway, leading to an increase in IP3 and calcium. Consequently, the elevation of intracellular calcium concentration leads to vasoconstriction in smooth muscle of blood vessels. In addition, activation of alpha-1 receptors by phenylpropanolamine (PPA) produces anorexia and may induce appetite suppression in rats. Pssm-ID: 320449 [Multi-domain] Cd Length: 261 Bit Score: 46.04 E-value: 1.26e-05
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| 7tmA_OR7-like | cd15234 | olfactory receptor family 7 and related proteins, member of the class A family of ... |
39-130 | 1.50e-05 | ||||||
olfactory receptor family 7 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 7 and related proteins in other mammals. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320362 [Multi-domain] Cd Length: 277 Bit Score: 46.03 E-value: 1.50e-05
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| 7tmA_OR11A-like | cd15911 | olfactory receptor subfamily 11A and related proteins, member of the class A family of ... |
28-149 | 1.80e-05 | ||||||
olfactory receptor subfamily 11A and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 11A and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320577 Cd Length: 270 Bit Score: 45.55 E-value: 1.80e-05
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| 7tmA_OR4E-like | cd15940 | olfactory receptor 4E and related proteins, member of the class A family of ... |
28-149 | 2.29e-05 | ||||||
olfactory receptor 4E and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 4E and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320606 [Multi-domain] Cd Length: 267 Bit Score: 45.51 E-value: 2.29e-05
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| 7tmA_OR1_7-like | cd15918 | olfactory receptor families 1, 7, and related proteins, member of the class A family of ... |
27-149 | 2.30e-05 | ||||||
olfactory receptor families 1, 7, and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor families 1 and 7, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320584 [Multi-domain] Cd Length: 270 Bit Score: 45.30 E-value: 2.30e-05
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| 7tmA_CCKR-like | cd14993 | cholecystokinin receptors and related proteins, member of the class A family of ... |
28-329 | 2.45e-05 | ||||||
cholecystokinin receptors and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represents four G-protein coupled receptors that are members of the RFamide receptor family, including cholecystokinin receptors (CCK-AR and CCK-BR), orexin receptors (OXR), neuropeptide FF receptors (NPFFR), and pyroglutamylated RFamide peptide receptor (QRFPR). These RFamide receptors are activated by their endogenous peptide ligands that share a common C-terminal arginine (R) and an amidated phenylanine (F) motif. CCK-AR (type A, alimentary; also known as CCK1R) is found abundantly on pancreatic acinar cells and binds only sulfated CCK-peptides with very high affinity, whereas CCK-BR (type B, brain; also known as CCK2R), the predominant form in the brain and stomach, binds CCK or gastrin and discriminates poorly between sulfated and non-sulfated peptides. CCK is implicated in regulation of digestion, appetite control, and body weight, and is involved in neurogenesis via CCK-AR. There is some evidence to support that CCK and gastrin, via their receptors, are involved in promoting cancer development and progression, acting as growth and invasion factors. Orexins (OXs; also referred to as hypocretins) are neuropeptide hormones that regulate the sleep-wake cycle and potently influence homeostatic systems regulating appetite and feeding behavior or modulating emotional responses such as anxiety or panic. OXs are synthesized as prepro-orexin (PPO) in the hypothalamus and then proteolytically cleaved into two forms of isoforms: orexin-A (OX-A) and orexin-B (OX-B). OXA is a 33 amino-acid peptide with N-terminal pyroglutamyl residue and two intramolecular disulfide bonds, whereas OXB is a 28 amino-acid linear peptide with no disulfide bonds. OX-A binds orexin receptor 1 (OX1R) with high-affinity, but also binds with somewhat low-affinity to OX2R, and signals primarily to Gq coupling, whereas OX-B shows a strong preference for the orexin receptor 2 (OX2R) and signals through Gq or Gi/o coupling. The 26RFa, also known as QRFP (Pyroglutamylated RFamide peptide), is a 26-amino acid residue peptide that exerts similar orexigenic activity including the regulation of feeding behavior in mammals. It is the ligand for G-protein coupled receptor 103 (GPR103), which is predominantly expressed in paraventricular (PVN) and ventromedial (VMH) nuclei of the hypothalamus. GPR103 shares significant protein sequence homology with orexin receptors (OX1R and OX2R), which have recently shown to produce a neuroprotective effect in Alzheimer's disease by forming a functional heterodimer with GPR103. Neuropeptide FF (NPFF) is a mammalian octapeptide that has been implicated in a wide range of physiological functions in the brain including pain sensitivity, insulin release, food intake, memory, blood pressure, and opioid-induced tolerance and hyperalgesia. The effects of NPFF are mediated through neuropeptide FF1 and FF2 receptors (NPFF1-R and NPFF2-R) which are predominantly expressed in the brain. NPFF induces pro-nociceptive effects, mainly through the NPFF1-R, and anti-nociceptive effects, mainly through the NPFF2-R. Pssm-ID: 320124 [Multi-domain] Cd Length: 296 Bit Score: 45.28 E-value: 2.45e-05
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| 7tmA_TAAR1 | cd15314 | trace amine-associated receptor 1 and similar receptors, member of the class A family of ... |
28-77 | 2.60e-05 | ||||||
trace amine-associated receptor 1 and similar receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; The trace amine-associated receptor 1 (TAAR1) is one of the 15 identified trace amine-associated receptor subtypes, which form a distinct subfamily within the class A G protein-coupled receptor family. Trace amines are endogenous amines of unknown function that have strong structural and metabolic similarity to classical monoamine neurotransmitters (serotonin, noradrenaline, adrenaline, dopamine, and histamine), which play critical roles in human and animal physiological activities such as cognition, consciousness, mood, motivation, perception, and autonomic responses. However, trace amines are found in the mammalian brain at very low concentrations compared to classical monoamines. TAAR1 is coupled to the Gs protein, which leads to activation of adenylate cyclase, and is thought to play functional role in the regulation of brain monoamines. TAAR1 is also shown to be activated by psychoactive compounds such as Ecstasy (MDMA), amphetamine and LSD. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320438 [Multi-domain] Cd Length: 282 Bit Score: 45.31 E-value: 2.60e-05
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| 7tmA_OR2-like | cd15237 | olfactory receptor family 2 and related proteins, member of the class A family of ... |
28-132 | 2.60e-05 | ||||||
olfactory receptor family 2 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor families 2 and 13, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320365 [Multi-domain] Cd Length: 270 Bit Score: 45.34 E-value: 2.60e-05
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| 7tmA_Opioid_R-like | cd14970 | opioid receptors and related proteins, member of the class A family of seven-transmembrane G ... |
29-309 | 3.66e-05 | ||||||
opioid receptors and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes opioid receptors, somatostatin receptors, melanin-concentrating hormone receptors (MCHRs), and neuropeptides B/W receptors. Together they constitute the opioid receptor-like family, members of the class A G-protein coupled receptors. Opioid receptors are coupled to inhibitory G proteins of the G(i/o) family and are involved in regulating a variety of physiological functions such as pain, addiction, mood, stress, epileptic seizure, and obesity, among many others. G protein-coupled somatostatin receptors (SSTRs), which display strong sequence similarity with opioid receptors, binds somatostatin (somatotropin release inhibiting factor), a polypeptide hormone that regulates a wide variety of physiological functions such as neurotransmission, cell proliferation, contractility of smooth muscle cells, and endocrine signaling as well as inhibition of the release of many secondary hormones. MCHR binds melanin concentrating hormone and is presumably involved in the neuronal regulation of food intake. Despite strong homology with somatostatin receptors, MCHR does not appear to bind somatostatin. Neuropeptides B/W receptors are primarily expressed in the CNS and stimulate the cortisol secretion by activating the adenylate cyclase- and the phospholipase C-dependent signaling pathways. Pssm-ID: 320101 [Multi-domain] Cd Length: 282 Bit Score: 44.98 E-value: 3.66e-05
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| 7tmA_5-HT2 | cd15052 | serotonin receptor subtype 2, member of the class A family of seven-transmembrane G ... |
39-161 | 3.83e-05 | ||||||
serotonin receptor subtype 2, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT2 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the central nervous system (CNS). The 5-HT2 subfamily is composed of three subtypes that mediate excitatory neurotransmission: 5-HT2A, 5-HT2B, and 5-HT2C. They are selectively linked to G proteins of the G(q/11) family and activate phospholipase C, which leads to activation of protein kinase C and calcium release. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in diseases such as migraine, schizophrenia, and depression. Indeed, 5-HT2 receptors are attractive targets for a variety of psychoactive drugs, ranging from atypical antipsychotic drugs, antidepressants, and anxiolytics, which have an antagonistic action on 5-HT2 receptors, to hallucinogens, which act as agonists at postsynaptic 5-HT2 receptors. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320180 [Multi-domain] Cd Length: 262 Bit Score: 44.61 E-value: 3.83e-05
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| 7tmA_Dop1R2-like | cd15067 | dopamine 1-like receptor 2 from Drosophila melanogaster and similar proteins, member of the ... |
36-288 | 3.89e-05 | ||||||
dopamine 1-like receptor 2 from Drosophila melanogaster and similar proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; G protein-coupled dopamine 1-like receptor 2 is expressed in Drosophila heads and it shows significant sequence similarity with vertebrate and invertebrate dopamine receptors. Although the Drosophila Dop1R2 receptor does not cluster into the D1-like structural group, it does show pharmacological properties similar to D1-like receptors. As shown in vertebrate D1-like receptors, agonist stimulation of Dop1R2 activates adenylyl cyclase to increase cAMP levels and also generates a calcium signal through stimulation of phospholipase C. Pssm-ID: 320195 [Multi-domain] Cd Length: 262 Bit Score: 44.65 E-value: 3.89e-05
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| 7tmA_OR6N-like | cd15914 | olfactory receptor OR6N and related proteins, member of the class A family of ... |
28-140 | 4.94e-05 | ||||||
olfactory receptor OR6N and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 6N, 6K, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320580 [Multi-domain] Cd Length: 270 Bit Score: 44.28 E-value: 4.94e-05
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| 7tmA_capaR | cd15134 | neuropeptide capa receptor and similar invertebrate proteins, member of the class A family of ... |
41-295 | 5.30e-05 | ||||||
neuropeptide capa receptor and similar invertebrate proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; CapaR is a G-protein coupled receptor for the Drosophila melanogaster capa neuropeptides (Drm-capa-1 and -2), which act on the Malpighian tubules to increase fluid transport. The capa peptides are evolutionarily related to vertebrate Neuromedin U neuropeptide and contain a C-terminal FPRXamide motif. CapaR regulates fluid homeostasis through its ligands, thereby acts as a desiccation stress-responsive receptor. CapaR undergoes desensitization, with internalization mediated by beta-arrestin-2. Pssm-ID: 320262 [Multi-domain] Cd Length: 298 Bit Score: 44.24 E-value: 5.30e-05
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| 7tmA_OR14-like | cd15227 | olfactory receptor family 14 and related proteins, member of the class A family of ... |
44-157 | 5.46e-05 | ||||||
olfactory receptor family 14 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 14 and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320355 Cd Length: 270 Bit Score: 44.37 E-value: 5.46e-05
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| 7tmA_NTSR-like | cd14979 | neurotensin receptors and related G protein-coupled receptors, member of the class A family of ... |
34-329 | 6.11e-05 | ||||||
neurotensin receptors and related G protein-coupled receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes the neurotensin receptors and related G-protein coupled receptors, including neuromedin U receptors, growth hormone secretagogue receptor, motilin receptor, the putative GPR39 and the capa receptors from insects. These receptors all bind peptide hormones with diverse physiological effects. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320110 [Multi-domain] Cd Length: 300 Bit Score: 44.27 E-value: 6.11e-05
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| 7tmA_OR5J-like | cd15415 | olfactory receptor subfamily 5J and related proteins, member of the class A family of ... |
29-129 | 6.31e-05 | ||||||
olfactory receptor subfamily 5J and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5J and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320537 [Multi-domain] Cd Length: 279 Bit Score: 43.94 E-value: 6.31e-05
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| 7tmA_Melanopsin | cd15336 | vertebrate melanopsins (Opsin-4), member of the class A family of seven-transmembrane G ... |
41-166 | 7.36e-05 | ||||||
vertebrate melanopsins (Opsin-4), member of the class A family of seven-transmembrane G protein-coupled receptors; Melanopsin (also called Opsin-4) is the G protein-coupled photopigment that mediates non-visual responses to light. In mammals, these photoresponses include the photo-entrainment of circadian rhythm, pupillary constriction, and acute nocturnal melatonin suppression. Mammalian melanopsins are expressed only in the inner retina, whereas non-mammalian vertebrate melanopsins are localized in various extra-retinal tissues such as iris, brain, pineal gland, and skin. Melanopsins belong the class A of the G protein-coupled receptors and possess seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 320458 [Multi-domain] Cd Length: 290 Bit Score: 43.94 E-value: 7.36e-05
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| 7tmA_Octopamine_R | cd15063 | octopamine receptors in invertebrates, member of the class A family of seven-transmembrane G ... |
39-177 | 7.51e-05 | ||||||
octopamine receptors in invertebrates, member of the class A family of seven-transmembrane G protein-coupled receptors; G-protein coupled receptor for octopamine (OA), which functions as a neurotransmitter, neurohormone, and neuromodulator in invertebrate nervous system. Octopamine (also known as beta, 4-dihydroxyphenethylamine) is an endogenous trace amine that is highly similar to norepinephrine, but lacks a hydroxyl group, and has effects on the adrenergic and dopaminergic nervous systems. Based on the pharmacological and signaling profiles, the octopamine receptors can be classified into at least two groups: OA1 receptors elevate intracellular calcium levels in muscle, whereas OA2 receptors activate adenylate cyclase and increase cAMP production. Pssm-ID: 320191 [Multi-domain] Cd Length: 266 Bit Score: 43.64 E-value: 7.51e-05
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| 7tmA_DmOct-betaAR-like | cd15066 | Drosophila melanogaster beta-adrenergic receptor-like octopamine receptors and similar ... |
36-162 | 9.48e-05 | ||||||
Drosophila melanogaster beta-adrenergic receptor-like octopamine receptors and similar receptors in bilateria; member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes Drosophila beta-adrenergic-like octopamine receptors and similar proteins. The biogenic amine octopamine is the invertebrate equivalent of vertebrate adrenergic neurotransmitters and exerts its effects through different G protein-coupled receptor types. Insect octopamine receptors are involved in the modulation of carbohydrate metabolism, muscular tension, cognition and memory. The activation of octopamine receptors mediating these actions leads to an increase in adenylate cyclase activity, thereby increasing cAMP levels. In Drosophila melanogaster, three subgroups have been classified on the basis of their structural homology and functional equivalents with vertebrate beta-adrenergic receptors: DmOctBeta1R, DmOctBeta2R, and DmOctBeta3R. Pssm-ID: 320194 [Multi-domain] Cd Length: 265 Bit Score: 43.52 E-value: 9.48e-05
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| 7tmA_OR13-like | cd15232 | olfactory receptor family 13 and related proteins, member of the class A family of ... |
28-132 | 1.18e-04 | ||||||
olfactory receptor family 13 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 13 (subfamilies 13A1 and 13G1) and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320360 [Multi-domain] Cd Length: 270 Bit Score: 43.02 E-value: 1.18e-04
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| 7tmA_OR5AK3-like | cd15408 | olfactory receptor subfamily 5AK3, 5AU1, and related proteins, member of the class A family of ... |
32-132 | 1.82e-04 | ||||||
olfactory receptor subfamily 5AK3, 5AU1, and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5AK3, 5AU1, and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320530 Cd Length: 287 Bit Score: 42.69 E-value: 1.82e-04
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| 7tmA_OR10A-like | cd15225 | olfactory receptor subfamily 10A and related proteins, member of the class A family of ... |
28-132 | 2.01e-04 | ||||||
olfactory receptor subfamily 10A and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 10A, 10C, 10H, 10J, 10V, 10R, 10J, 10W, among others, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320353 Cd Length: 277 Bit Score: 42.44 E-value: 2.01e-04
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| 7tmA_OR5M-like | cd15412 | olfactory receptor subfamily 5M and related proteins, member of the class A family of ... |
27-132 | 2.08e-04 | ||||||
olfactory receptor subfamily 5M and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5M and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320534 Cd Length: 279 Bit Score: 42.39 E-value: 2.08e-04
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| 7tmA_5-HT2B | cd15306 | serotonin receptor subtype 2B, member of the class A family of seven-transmembrane G ... |
28-335 | 2.16e-04 | ||||||
serotonin receptor subtype 2B, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT2 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the central nervous system (CNS). The 5-HT2 subfamily is composed of three subtypes that mediate excitatory neurotransmission: 5-HT2A, 5-HT2B, and 5-HT2C. They are selectively linked to G proteins of the G(q/11) family and activate phospholipase C, which leads to activation of protein kinase C and calcium release. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in diseases such as migraine, schizophrenia, and depression. Indeed, 5-HT2 receptors are attractive targets for a variety of psychoactive drugs, ranging from atypical antipsychotic drugs, antidepressants, and anxiolytics, which have an antagonistic action on 5-HT2 receptors, to hallucinogens, which act as agonists at postsynaptic 5-HT2 receptors. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 341347 [Multi-domain] Cd Length: 277 Bit Score: 42.51 E-value: 2.16e-04
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| 7tmA_LPAR2_Edg4 | cd15342 | lysophosphatidic acid receptor subtype 2 (LPAR2 or LPA2), also called Endothelial ... |
27-163 | 2.25e-04 | ||||||
lysophosphatidic acid receptor subtype 2 (LPAR2 or LPA2), also called Endothelial differentiation gene 4 (Edg4), member of the class A family of seven-transmembrane G protein-coupled receptors; The endothelial differentiation gene (Edg) family of G-protein coupled receptors binds blood borne lysophospholipids including sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), which are involved in the regulation of cell proliferation, survival, migration, invasion, endothelial cell shape change and cytoskeletal remodeling. The Edg receptors are classified into two subfamilies: the lysophosphatidic acid subfamily that includes LPA1 (Edg2), LPA2 (Edg4), and LPA3 (Edg7); and the S1P subfamily that includes S1P1 (Edg1), S1P2 (Edg5), S1P3 (Edg3), S1P4 (Edg6), and S1P5 (Edg8). The Edg receptors couple and activate at least three different G protein subtypes including G(i/o), G(q/11), and G(12/13). Pssm-ID: 320464 [Multi-domain] Cd Length: 274 Bit Score: 42.48 E-value: 2.25e-04
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| 7tmA_5-HT6 | cd15054 | serotonin receptor subtype 6, member of the class A family of seven-transmembrane G ... |
36-243 | 2.29e-04 | ||||||
serotonin receptor subtype 6, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT6 receptors are a subfamily of serotonin receptors that bind the neurotransmitter serotonin (5HT; 5-hydroxytryptamine) in the mammalian central nervous system (CNS). 5-HT6 receptors are selectively linked to G proteins of the G(s) family, which positively stimulate adenylate cyclase, causing cAMP formation and activation of protein kinase A. The 5-HT6 receptors mediates excitatory neurotransmission and are involved in learning and memory; thus they are promising targets for the treatment of cognitive impairment. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320182 [Multi-domain] Cd Length: 267 Bit Score: 42.48 E-value: 2.29e-04
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| 7tmA_OR5C1-like | cd15945 | olfactory receptor subfamily 5C1 and related proteins, member of the class A family of ... |
21-132 | 3.94e-04 | ||||||
olfactory receptor subfamily 5C1 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5C1 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320611 Cd Length: 292 Bit Score: 41.65 E-value: 3.94e-04
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| 7tmA_OR1330-like | cd15946 | olfactory receptor 1330 and related proteins, member of the class A family of ... |
29-132 | 5.02e-04 | ||||||
olfactory receptor 1330 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes olfactory receptors 1330 from mouse, Olr859 from rat, and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320612 Cd Length: 270 Bit Score: 41.31 E-value: 5.02e-04
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| 7tmA_mAChR_M3 | cd15299 | muscarinic acetylcholine receptor subtype M3, member of the class A family of ... |
28-77 | 5.12e-04 | ||||||
muscarinic acetylcholine receptor subtype M3, member of the class A family of seven-transmembrane G protein-coupled receptors; Muscarinic acetylcholine receptors (mAChRs) regulate the activity of many fundamental central and peripheral functions. The mAChR family consists of 5 subtypes M1-M5, which can be further divided into two major groups according to their G-protein coupling preference. The M1, M3 and M5 receptors selectively interact with G proteins of the G(q/11) family, whereas the M2 and M4 receptors preferentially link to the G(i/o) types of G proteins. The M3 receptor is mainly located in smooth muscle, exocrine glands and vascular endothelium. It induces vomiting in the central nervous system and is a critical regulator of glucose homeostasis by modulating insulin secretion. Generally, M3 receptor causes contraction of smooth muscle resulting in vasoconstriction and increased glandular secretion. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320426 [Multi-domain] Cd Length: 274 Bit Score: 41.47 E-value: 5.12e-04
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| 7tmA_5-HT7 | cd15329 | serotonin receptor subtype 7, member of the class A family of seven-transmembrane G ... |
30-164 | 5.31e-04 | ||||||
serotonin receptor subtype 7, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT7 receptor, one of 14 mammalian serotonin receptors, is a member of the class A of GPCRs and is activated by the neurotransmitter serotonin (5-hydroxytryptamine, 5-HT). 5-HT7 receptor mainly couples to Gs protein, which positively stimulates adenylate cyclase, leading to increased intracellular cAMP formation and calcium influx. 5-HT7 receptor is expressed in various human tissues, mainly in the brain, the lower gastrointestinal tract and in vital blood vessels including the coronary artery. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in neurologic disorders such as migraine, schizophrenia, and depression. Pssm-ID: 320452 [Multi-domain] Cd Length: 260 Bit Score: 41.10 E-value: 5.31e-04
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| 7tmA_D2-like_dopamine_R | cd15053 | D2-like dopamine receptors, member of the class A family of seven-transmembrane G ... |
29-321 | 5.54e-04 | ||||||
D2-like dopamine receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Dopamine receptors are members of the class A G protein-coupled receptors that are involved in many neurological processes in the central nervous system (CNS). The neurotransmitter dopamine is the primary endogenous agonist for dopamine receptors. Dopamine receptors consist of at least five subtypes: D1, D2, D3, D4, and D5. The D1 and D5 subtypes are members of the D1-like family of dopamine receptors, whereas the D2, D3 and D4 subtypes are members of the D2-like family. The D1-like family receptors are coupled to G proteins of the G(s) family, which activate adenylate cyclase, causing cAMP formation and activation of protein kinase A. In contrast, activation of D2-like family receptors is linked to G proteins of the G(i) family, which inhibit adenylate cyclase. Dopamine receptors are major therapeutic targets for neurological and psychiatric disorders such as drug abuse, depression, schizophrenia, or Parkinson's disease. Pssm-ID: 320181 [Multi-domain] Cd Length: 263 Bit Score: 41.18 E-value: 5.54e-04
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| 7tmA_OR2D-like | cd15428 | olfactory receptor subfamily 2D and related proteins, member of the class A family of ... |
28-132 | 5.84e-04 | ||||||
olfactory receptor subfamily 2D and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 2D and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320545 [Multi-domain] Cd Length: 277 Bit Score: 40.93 E-value: 5.84e-04
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| 7tmA_OR5-like | cd15230 | olfactory receptor family 5 and related proteins, member of the class A family of ... |
28-132 | 6.54e-04 | ||||||
olfactory receptor family 5 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 5, some subfamilies from families 8 and 9, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320358 Cd Length: 270 Bit Score: 40.95 E-value: 6.54e-04
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| 7tmA_TAAR5 | cd15318 | trace amine-associated receptor 5, member of the class A family of seven-transmembrane G ... |
28-283 | 7.07e-04 | ||||||
trace amine-associated receptor 5, member of the class A family of seven-transmembrane G protein-coupled receptors; The trace amine-associated receptor 5 is one of the 15 identified amine-activated G protein-coupled receptors (TAARs), a distinct subfamily within the class A G protein-coupled receptors. Trace amines are endogenous amines of unknown function that have strong structural and metabolic similarity to classical monoamine neurotransmitters (serotonin, noradrenaline, adrenaline, dopamine, and histamine), which play critical roles in human and animal physiological activities such as cognition, consciousness, mood, motivation, perception, and autonomic responses. However, trace amines are found in the mammalian brain at very low concentrations compared to classical monoamines. Trace amines, including p-tyramine, beta-phenylethylamine, and tryptamine, are also thought to act as chemical messengers to exert their biological effects in vertebrates. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320441 [Multi-domain] Cd Length: 282 Bit Score: 41.00 E-value: 7.07e-04
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| 7tmA_Encephalopsin | cd15078 | encephalopsins (opsin-3), member of the class A family of seven-transmembrane G ... |
44-321 | 7.09e-04 | ||||||
encephalopsins (opsin-3), member of the class A family of seven-transmembrane G protein-coupled receptors; Encephalopsin, also called Opsin-3 or Panopsin, is a mammalian extra-retinal opsin that is highly localized in the brain. It is thought to play a role in encephalic photoreception. Encephalopsin belongs to the class A of the G protein-coupled receptors and shows strong homology to the vertebrate visual opsins. Pssm-ID: 320206 [Multi-domain] Cd Length: 279 Bit Score: 40.97 E-value: 7.09e-04
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| 7tmA_OR5AP2-like | cd15943 | olfactory receptor subfamily 5AP2 and related proteins, member of the class A family of ... |
28-129 | 7.35e-04 | ||||||
olfactory receptor subfamily 5AP2 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5AP2 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320609 [Multi-domain] Cd Length: 295 Bit Score: 40.81 E-value: 7.35e-04
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| 7tmA_OR2B2-like | cd15432 | olfactory receptor subfamily 2B2 and related proteins, member of the class A family of ... |
28-143 | 8.37e-04 | ||||||
olfactory receptor subfamily 2B2 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes transmembrane olfactory receptor subfamily 2B2 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320549 [Multi-domain] Cd Length: 277 Bit Score: 40.54 E-value: 8.37e-04
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| 7tmA_OR4-like | cd15226 | olfactory receptor family 4 and related proteins, member of the class A family of ... |
28-149 | 1.12e-03 | ||||||
olfactory receptor family 4 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 4 and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320354 [Multi-domain] Cd Length: 267 Bit Score: 40.26 E-value: 1.12e-03
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| 7tmA_OR2B-like | cd15947 | olfactory receptor subfamily 2B and related proteins, member of the class A family of ... |
28-149 | 1.31e-03 | ||||||
olfactory receptor subfamily 2B and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 2 (subfamilies 2B, 2C, 2G, 2H, 2I, 2J, 2W, 2Y) and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320613 [Multi-domain] Cd Length: 270 Bit Score: 39.91 E-value: 1.31e-03
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| 7tmA_Pinopsin | cd15084 | non-visual pinopsins, member of the class A family of seven-transmembrane G protein-coupled ... |
42-300 | 1.48e-03 | ||||||
non-visual pinopsins, member of the class A family of seven-transmembrane G protein-coupled receptors; Pinopsins are found in the pineal organ of birds, reptiles and amphibians, but are absent from teleosts and mammals. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells. They are thought to be involved in light-dependent physiological functions such as photo-entrainment of circadian rhythm, photoperiodicity and body color change. Pinopsins belong the class A of the G protein-coupled receptors and possess seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 320212 [Multi-domain] Cd Length: 295 Bit Score: 39.85 E-value: 1.48e-03
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| 7tmA_OR5AR1-like | cd15944 | olfactory receptor subfamily 5AR1 and related proteins, member of the class A family of ... |
29-134 | 1.54e-03 | ||||||
olfactory receptor subfamily 5AR1 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5AR1 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320610 [Multi-domain] Cd Length: 294 Bit Score: 39.77 E-value: 1.54e-03
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| 7tmA_Galanin_R-like | cd14971 | galanin receptor and related proteins, member of the class A family of seven-transmembrane G ... |
34-329 | 1.62e-03 | ||||||
galanin receptor and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes G-protein coupled galanin receptors, kisspeptin receptor and allatostatin-A receptor (AstA-R) in insects. These receptors, which are members of the class A of seven transmembrane GPCRs, share a high degree of sequence homology among themselves. The galanin receptors bind galanin, a neuropeptide that is widely expressed in the brain, peripheral tissues, and endocrine glands. Galanin is implicated in numerous neurological and psychiatric diseases including Alzheimer's disease, eating disorders, and epilepsy, among many others. KiSS1-derived peptide receptor (also known as GPR54 or kisspeptin receptor) binds the peptide hormone kisspeptin (metastin), which encoded by the metastasis suppressor gene (KISS1) expressed in various endocrine and reproductive tissues. AstA-R is a G-protein coupled receptor that binds allatostatin A. Three distinct types of allatostatin have been identified in the insects and crustaceans: AstA, AstB, and AstC. They both inhibit the biosynthesis of juvenile hormone and exert an inhibitory influence on food intake. Therefore, allatostatins are considered as potential targets for insect control. Pssm-ID: 320102 [Multi-domain] Cd Length: 281 Bit Score: 39.76 E-value: 1.62e-03
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| 7tmA_OR5H-like | cd15409 | olfactory receptor subfamily 5H and related proteins, member of the class A family of ... |
32-129 | 1.88e-03 | ||||||
olfactory receptor subfamily 5H and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5H, 5K, 5AC, 5T and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320531 [Multi-domain] Cd Length: 279 Bit Score: 39.70 E-value: 1.88e-03
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| 7tmA_OR2_unk | cd15424 | olfactory receptor family 2, unknown subfamily, member of the class A family of ... |
28-132 | 2.00e-03 | ||||||
olfactory receptor family 2, unknown subfamily, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represents an unknown subfamily, conserved in some mammalia and sauropsids, in family 2 of olfactory receptors. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320544 [Multi-domain] Cd Length: 277 Bit Score: 39.33 E-value: 2.00e-03
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| 7tmA_tmt_opsin | cd15086 | teleost multiple tissue (tmt) opsin, member of the class A family of seven-transmembrane G ... |
119-329 | 2.21e-03 | ||||||
teleost multiple tissue (tmt) opsin, member of the class A family of seven-transmembrane G protein-coupled receptors; Teleost multiple tissue (tmt) opsins are homologs of encephalopsin. Mouse encephalopsin (or panopsin) is highly expressed in the brain and testes, whereas the teleost homologs are localized to multiple tissues. The exact functions of the encephalopsins and tmt-opsins are unknown. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells. They are thought to be involved in light-dependent physiological functions such as photo-entrainment of circadian rhythm, photoperiodicity and body color change. Tmt opsins belong to the class A of the G protein-coupled receptors and show strong homology to the vertebrate visual opsins. Pssm-ID: 320214 [Multi-domain] Cd Length: 276 Bit Score: 39.34 E-value: 2.21e-03
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| 7tmA_OR13-like | cd15430 | olfactory receptor family 13 and related proteins, member of the class A family of ... |
27-143 | 2.22e-03 | ||||||
olfactory receptor family 13 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 13 (subfamilies 13C, 13D, 13F, and 13J), some subfamilies from OR family 2 (2K and 2S), and related proteins in other mammals. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320547 [Multi-domain] Cd Length: 270 Bit Score: 39.28 E-value: 2.22e-03
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| 7tmA_GnRHR-like | cd15195 | gonadotropin-releasing hormone and adipokinetic hormone receptors, member of the class A ... |
206-327 | 2.34e-03 | ||||||
gonadotropin-releasing hormone and adipokinetic hormone receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Gonadotropin-releasing hormone (GnRH) and adipokinetic hormone (AKH) receptors share strong sequence homology to each other, suggesting that they have a common evolutionary origin. GnRHR, also known as luteinizing hormone releasing hormone receptor (LHRHR), plays an central role in vertebrate reproductive function; its activation by binding to GnRH leads to the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland. Adipokinetic hormone (AKH) is a lipid-mobilizing hormone that is involved in control of insect metabolism. Generally, AKH behaves as a typical stress hormone by mobilizing lipids, carbohydrates and/or certain amino acids such as proline. Thus, it utilizes the body's energy reserves to fight the immediate stress problems and subdue processes that are less important. Although AKH is known to responsible for regulating the energy metabolism during insect flying, it is also found in insects that have lost its functional wings and predominantly walk for their locomotion. Both GnRH and AKH receptors are members of the class A of the seven-transmembrane, G-protein coupled receptor (GPCR) superfamily. Pssm-ID: 320323 [Multi-domain] Cd Length: 293 Bit Score: 39.30 E-value: 2.34e-03
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| 7tmA_MCHR2 | cd15339 | melanin concentrating hormone receptor 2, member of the class A family of seven-transmembrane ... |
36-331 | 2.69e-03 | ||||||
melanin concentrating hormone receptor 2, member of the class A family of seven-transmembrane G protein-coupled receptors; Melanin-concentrating hormone receptor (MCHR) binds melanin concentrating hormone and is presumably involved in the neuronal regulation of food intake and energy homeostasis. Despite strong homology with somatostatin receptors, MCHR does not appear to bind somatostatin. Two MCHRs have been characterized in vertebrates, MCHR1 and MCHR2. MCHR1 is expressed in all mammals, whereas MCHR2 is only expressed in the higher order mammals, such as humans, primates, and dogs, and is not found in rodents. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320461 [Multi-domain] Cd Length: 283 Bit Score: 39.03 E-value: 2.69e-03
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| 7tmA_MWS_opsin | cd15080 | medium wave-sensitive opsins, member of the class A family of seven-transmembrane G ... |
40-281 | 2.70e-03 | ||||||
medium wave-sensitive opsins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes Medium Wave-Sensitive opsin, which mediates visual transduction in response to light at medium wavelengths (green). Vertebrate cone opsins are expressed in cone photoreceptor cells of the retina and involved in mediating photopic vision, which allows color perception. The cone opsins can be classified into four classes according to their peak absorption wavelengths: SWS1 (ultraviolet sensitive), SWS2 (short wave-sensitive), MWS/LWS (medium/long wave-sensitive), and RH2 (medium wave-sensitive, rhodopsin-like opsins). Members of this group belong to the class A of the G protein-coupled receptors and possess seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 381742 [Multi-domain] Cd Length: 280 Bit Score: 39.05 E-value: 2.70e-03
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| 7tmA_Cannabinoid_R | cd15099 | cannabinoid receptors, member of the class A family of seven-transmembrane G protein-coupled ... |
27-289 | 2.95e-03 | ||||||
cannabinoid receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Cannabinoid receptors belong to the class A G-protein coupled receptor superfamily. Two types of cannabinoid receptors, CB1 and CB2, have been identified so far. They are activated by naturally occurring endocannabinoids, cannabis plant-derived cannabinoids such as tetrahydrocannabinol, or synthetic cannabinoids. The CB receptors are involved in the various physiological processes such as appetite, mood, memory, and pain sensation. CB1 receptor is expressed predominantly in central and peripheral neurons, while CB2 receptor is found mainly in the immune system. Pssm-ID: 320227 [Multi-domain] Cd Length: 281 Bit Score: 39.05 E-value: 2.95e-03
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| 7tmA_OR4D-like | cd15936 | olfactory receptor 4D and related proteins, member of the class A family of ... |
28-131 | 3.00e-03 | ||||||
olfactory receptor 4D and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 4D and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320602 [Multi-domain] Cd Length: 267 Bit Score: 38.85 E-value: 3.00e-03
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| 7tmA_OR6C-like | cd15912 | olfactory receptor subfamily 6C and related proteins, member of the class A family of ... |
28-159 | 3.29e-03 | ||||||
olfactory receptor subfamily 6C and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 6C, 6X, 6J, 6T, 6V, 6M, 9A, and related proteins in other mammals, sauropsids, and amphibians. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320578 Cd Length: 270 Bit Score: 38.62 E-value: 3.29e-03
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| 7tmA_OR10G6-like | cd15942 | olfactory receptor subfamily 10G6 and related proteins, member of the class A family of ... |
28-149 | 3.54e-03 | ||||||
olfactory receptor subfamily 10G6 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor 10G6 and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320608 Cd Length: 275 Bit Score: 38.57 E-value: 3.54e-03
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| 7tmA_5-HT1A_invertebrates | cd15331 | serotonin receptor subtype 1A from invertebrates, member of the class A family of ... |
29-73 | 4.19e-03 | ||||||
serotonin receptor subtype 1A from invertebrates, member of the class A family of seven-transmembrane G protein-coupled receptors; The 5-HT1 receptors, one of 14 mammalian 5-HT receptors, is a member of the class A of GPCRs and is activated by the endogenous neurotransmitter and peripheral signal mediator serotonin (5-hydroxytryptamine, 5-HT). The 5-HT1 receptors mediate inhibitory neurotransmission by coupling to G proteins of the G(i/o) family, which lead to a decrease in adenylate cyclase activity, thereby decreasing intracellular cAMP levels and calcium influx. The 5-HT1 receptor subfamily includes 5 subtypes: 5-HT1A, 5-HT1B, 5-HT1D, 5-HT1E, and 5-HT1F. There is no 5-HT1C receptor subtype, as it has been reclassified as the 5-HT2C receptor. In the CNS, serotonin is involved in the regulation of appetite, mood, sleep, cognition, learning and memory, as well as implicated in neurologic disorders such as migraine, schizophrenia, and depression. Pssm-ID: 320454 [Multi-domain] Cd Length: 261 Bit Score: 38.49 E-value: 4.19e-03
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| 7tmA_MCHR-like | cd15088 | melanin concentrating hormone receptor, member of the class A family of seven-transmembrane G ... |
44-321 | 4.34e-03 | ||||||
melanin concentrating hormone receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; Melanin-concentrating hormone receptor (MCHR) binds melanin concentrating hormone and is presumably involved in the neuronal regulation of food intake and energy homeostasis. Despite strong homology with somatostatin receptors, MCHR does not appear to bind somatostatin. Two MCHRs have been characterized in vertebrates, MCHR1 and MCHR2. MCHR1 is expressed in all mammals, whereas MCHR2 is only expressed in the higher order mammals, such as humans, primates, and dogs, and is not found in rodents. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320216 [Multi-domain] Cd Length: 278 Bit Score: 38.59 E-value: 4.34e-03
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| 7tmA_mAChR | cd15049 | muscarinic acetylcholine receptor subfamily, member of the class A family of ... |
28-77 | 4.42e-03 | ||||||
muscarinic acetylcholine receptor subfamily, member of the class A family of seven-transmembrane G protein-coupled receptors; Muscarinic acetylcholine receptors (mAChRs) regulate the activity of many fundamental central and peripheral functions. The mAChR family consists of 5 subtypes M1-M5, which can be further divided into two major groups according to their G-protein coupling preference. The M1, M3 and M5 receptors selectively interact with G proteins of the G(q/11) family, whereas the M2 and M4 receptors preferentially link to the G(i/o) types of G proteins. Activation of mAChRs by agonist (acetylcholine) leads to a variety of biochemical and electrophysiological responses. In general, the exact nature of these responses and the subsequent physiological effects mainly depend on the molecular and pharmacological identity of the activated receptor subtype(s). All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 341322 [Multi-domain] Cd Length: 262 Bit Score: 38.45 E-value: 4.42e-03
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| 7tmA_OR4A-like | cd15939 | olfactory receptor 4A and related proteins, member of the class A family of ... |
28-130 | 4.43e-03 | ||||||
olfactory receptor 4A and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 4A, 4C, 4P, 4S, 4X and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320605 [Multi-domain] Cd Length: 267 Bit Score: 38.35 E-value: 4.43e-03
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| 7tmA_OR56-like | cd15223 | olfactory receptor family 56 and related proteins, member of the class A family of ... |
31-132 | 5.46e-03 | ||||||
olfactory receptor family 56 and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor family 56 and related proteins in other mammals, sauropsids, and fishes. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320351 [Multi-domain] Cd Length: 279 Bit Score: 38.04 E-value: 5.46e-03
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| 7tmA_D1A_dopamine_R | cd15320 | D1A (or D1) subtype dopamine receptor, member of the class A family of seven-transmembrane G ... |
62-287 | 5.91e-03 | ||||||
D1A (or D1) subtype dopamine receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; Dopamine receptors are members of the class A G protein-coupled receptors that are involved in many neurological processes in the central nervous system (CNS). The neurotransmitter dopamine is the primary endogenous agonist for dopamine receptors. Dopamine receptors consist of at least five subtypes: D1, D2, D3, D4, and D5. The D1 and D5 subtypes are members of the D1-like family of dopamine receptors, whereas the D2, D3 and D4 subtypes are members of the D2-like family. The D1-like family receptors are coupled to G proteins of the G(s) family, which activate adenylate cyclase, causing cAMP formation and activation of protein kinase A. Dopamine receptors are major therapeutic targets for neurological and psychiatric disorders such as drug abuse, depression, schizophrenia, or Parkinson's disease. Pssm-ID: 320443 [Multi-domain] Cd Length: 319 Bit Score: 38.06 E-value: 5.91e-03
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| 7tmA_OR4N-like | cd15937 | olfactory receptor 4N, 4M, and related proteins, member of the class A family of ... |
28-132 | 6.25e-03 | ||||||
olfactory receptor 4N, 4M, and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 4N, 4M, and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320603 Cd Length: 267 Bit Score: 37.79 E-value: 6.25e-03
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| 7tmA_OR1E-like | cd15236 | olfactory receptor subfamily 1E and related proteins, member of the class A family of ... |
28-132 | 6.26e-03 | ||||||
olfactory receptor subfamily 1E and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 1E, 1J, and related proteins in other mammals. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320364 [Multi-domain] Cd Length: 277 Bit Score: 37.83 E-value: 6.26e-03
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| 7tmA_Parapinopsin | cd15075 | non-visual parapinopsin, member of the class A family of seven-transmembrane G protein-coupled ... |
120-332 | 6.37e-03 | ||||||
non-visual parapinopsin, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes the non-visual pineal pigment, parapinopsin, which is a member of the class A of the seven transmembrane G protein-coupled receptors. Parapinopsin serves as a UV-sensitive pigment for the wavelength discrimination in the pineal-related organs of lower vertebrates such as reptiles, amphibians, and fish. Although parapinopsin is phylogenetically related to vertebrate visual pigments such as rhodopsin, which releases its retinal chromophore and bleaches, the parapinopsin photoproduct is stable and does not bleach. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells. Pssm-ID: 320203 [Multi-domain] Cd Length: 279 Bit Score: 37.83 E-value: 6.37e-03
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| 7tmA_GPR101 | cd15215 | orphan G protein-coupled receptor 101, member of the class A family of seven-transmembrane G ... |
36-162 | 6.44e-03 | ||||||
orphan G protein-coupled receptor 101, member of the class A family of seven-transmembrane G protein-coupled receptors; Gpr101, an orphan GPCR, is predominantly expressed in the brain within discrete nuclei and is predicted to couple to the stimulatory G(s) protein, a potent activator of adenylate cyclase. GPR101 has been implicated in mediating the actions of GnRH-(1-5), a pentapeptide formed by metallopeptidase cleavage of the decapeptide gonadotropin-releasing hormone (GnRH), which plays a critical role in the regulation of the hypothalamic-pituitary-gonadal axis. GnRH-(1-5) acts on GPR101 to stimulate epidermal growth factor (EFG) release and EFG-receptor (EGFR) phosphorylation, leading to enhanced cell migration and invasion in the Ishikawa endometrial cancer cell line. Furthermore, these effects of GnRH-(1-5) are also dependent on enzymatic activation of matrix metallopeptidase-9 (MMP-9). GPR101 is a member of the class A family of GPCRs, which includes receptors for hormones, neurotransmitters, sensory stimuli, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Pssm-ID: 320343 [Multi-domain] Cd Length: 261 Bit Score: 37.90 E-value: 6.44e-03
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| 7tmA_OR5D-like | cd15410 | olfactory receptor subfamily 5D and related proteins, member of the class A family of ... |
39-129 | 6.48e-03 | ||||||
olfactory receptor subfamily 5D and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 5D, 5L, 5W, and related proteins in other mammals and sauropsids. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320532 Cd Length: 294 Bit Score: 38.02 E-value: 6.48e-03
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| 7tmA_S1PR | cd15102 | sphingosine-1-phosphate receptors, member of the class A family of seven-transmembrane G ... |
32-289 | 6.59e-03 | ||||||
sphingosine-1-phosphate receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; The endothelial differentiation gene (Edg) family of G-protein coupled receptors binds blood borne lysophospholipids including sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), which are involved in the regulation of cell proliferation, survival, migration, invasion, endothelial cell shape change and cytoskeletal remodeling. The Edg receptors are classified into two subfamilies: the lysophosphatidic acid subfamily that includes LPA1 (Edg2), LPA2 (Edg4), and LPA3 (Edg7); and the S1P subfamily that includes S1P1 (Edg1), S1P2 (Edg5), S1P3 (Edg3), S1P4 (Edg6), and S1P5 (Edg8). The Edg receptors couple and activate at least three different G protein subtypes including G(i/o), G(q/11), and G(12/13). Pssm-ID: 320230 [Multi-domain] Cd Length: 270 Bit Score: 37.83 E-value: 6.59e-03
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| 7tmA_OR2W-like | cd15434 | olfactory receptor subfamily 2W and related proteins, member of the class A family of ... |
28-131 | 7.78e-03 | ||||||
olfactory receptor subfamily 2W and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes human olfactory receptor subfamily 2W and related proteins in other mammals. Olfactory receptors (ORs) play a central role in olfaction, the sense of smell. ORs belong to the class A rhodopsin-like family of G protein-coupled receptors and constitute the largest multigene family in mammals of approximately 1,000 genes. More than 60% of human ORs are non-functional pseudogenes compared to only about 20% in mouse. Each OR can recognize structurally similar odorants, and a single odorant can be detected by several ORs. Binding of an odorant to the olfactory receptor induces a conformational change that leads to the activation of the olfactory-specific G protein (Golf). The G protein (Golf and/or Gs) in turn stimulates adenylate cyclase to make cAMP. The cAMP opens cyclic nucleotide-gated ion channels, which allow the influx of calcium and sodium ions, resulting in depolarization of the olfactory receptor neuron and triggering an action potential which transmits this information to the brain. A consensus nomenclature system based on evolutionary divergence is used here to classify the olfactory receptor family. The nomenclature begins with the root name OR, followed by an integer representing a family, a letter denoting a subfamily, and an integer representing the individual gene within the subfamily. Pssm-ID: 320551 [Multi-domain] Cd Length: 277 Bit Score: 37.74 E-value: 7.78e-03
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| 7tmA_D1B_dopamine_R | cd15319 | D1B (or D5) subtype dopamine receptor, member of the class A family of seven-transmembrane G ... |
32-287 | 8.91e-03 | ||||||
D1B (or D5) subtype dopamine receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; Dopamine receptors are members of the class A G protein-coupled receptors that are involved in many neurological processes in the central nervous system (CNS). The neurotransmitter dopamine is the primary endogenous agonist for dopamine receptors. Dopamine receptors consist of at least five subtypes: D1, D2, D3, D4, and D5. The D1 and D5 subtypes are members of the D1-like family of dopamine receptors, whereas the D2, D3 and D4 subtypes are members of the D2-like family. The D1-like family receptors are coupled to G proteins of the G(s) family, which activate adenylate cyclase, causing cAMP formation and activation of protein kinase A. Dopamine receptors are major therapeutic targets for neurological and psychiatric disorders such as drug abuse, depression, schizophrenia, or Parkinson's disease. Pssm-ID: 320442 [Multi-domain] Cd Length: 317 Bit Score: 37.63 E-value: 8.91e-03
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| 7tmA_Opsin5_neuropsin | cd15074 | neuropsin (Opsin-5), member of the class A family of seven-transmembrane G protein-coupled ... |
30-301 | 9.50e-03 | ||||||
neuropsin (Opsin-5), member of the class A family of seven-transmembrane G protein-coupled receptors; Neuropsin, also known as Opsin-5, is a photoreceptor protein expressed in the retina, brain, testes, and spinal cord. Neuropsin belongs to the type 2 opsin family of the class A G-protein coupled receptors. Mammalian neuropsin activates Gi protein-mediated photo-transduction pathway in a UV-dependent manner, whereas, in non-mammalian vertebrates, neuropsin is involved in regulating the photoperiodic control of seasonal reproduction in birds such as quail. As with other opsins, it may also act as a retinal photoisomerase. Pssm-ID: 320202 [Multi-domain] Cd Length: 284 Bit Score: 37.25 E-value: 9.50e-03
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| 7tmA_GPR61_GPR62-like | cd15220 | G protein-coupled receptors 61 and 62, member of the class A family of seven-transmembrane G ... |
120-328 | 9.63e-03 | ||||||
G protein-coupled receptors 61 and 62, member of the class A family of seven-transmembrane G protein-coupled receptors; This subgroup includes the orphan receptors GPR61 and GPR62, which are both constitutively active and predominantly expressed in the brain. While GPR61 couples to G(s) subtype of G proteins, the signaling pathway and function of GPR 62 are unknown. GPR61-deficient mice displayed significant hyperphagia and heavier body weight compared to wild-type mice, suggesting that GPR61 is involved in the regulation of food intake and body weight. GPR61 transcript expression was found in the caudate, putamen, and thalamus of human brain, whereas GPR62 transcript expression was found in the basal forebrain, frontal cortex, caudate, putamen, thalamus, and hippocampus. Both receptors share the highest sequence homology with each other and comprise a conserved subgroup within the class A family of GPCRs, which includes receptors for hormones, neurotransmitters, sensory stimuli, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, which then activate the heterotrimeric G proteins. Members of this subgroup contain [A/E]RY motif, a variant of the highly conserved Asp-Arg-Tyr (DRY) motif found in the third transmembrane helix (TM3) of the class A GPCRs and important for efficient G protein-coupled signal transduction. Pssm-ID: 410633 [Multi-domain] Cd Length: 264 Bit Score: 37.43 E-value: 9.63e-03
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| 7tmA_SWS2_opsin | cd15077 | short wave-sensitive 2 opsins, member of the class A family of seven-transmembrane G ... |
44-329 | 9.73e-03 | ||||||
short wave-sensitive 2 opsins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes Short Wave-Sensitive opsin 2 (SWS2), which mediates visual transduction in response to light at short wavelengths (violet to blue). Vertebrate cone opsins are expressed in cone photoreceptor cells of the retina and involved in mediating photopic vision, which allows color perception. The cone opsins can be classified into four classes according to their peak absorption wavelengths: SWS1 (ultraviolet sensitive), SWS2 (short wave-sensitive), MWS/LWS (medium/long wave-sensitive), and RH2 (medium wave-sensitive, rhodopsin-like opsins). Members of this group belong to the class A of the G protein-coupled receptors and possess seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. Pssm-ID: 320205 [Multi-domain] Cd Length: 280 Bit Score: 37.50 E-value: 9.73e-03
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