Tumor necrosis factor receptor superfamily (TNFRSF); Members of TNFR superfamily (TNFRSF) interactions with TNF superfamily (TNFSF) ligands (TNFL) control key cellular processes such as differentiation, proliferation, apoptosis, and cell growth. Dysregulation of these pathways has been shown to result in a wide range of pathological conditions, including autoimmune diseases, inflammation, cancer, and viral infection. There are 29 very diverse family members of TNFRSF reported in humans: 22 are type I transmembrane receptors (single pass with the N terminus on extracellular side of the cell membrane) and have a clear signal peptide; the remaining 7 members are either type III transmembrane receptors (single pass with the N terminus on extracellular side of the membrane but no signal sequence; TNFR13B, TNFR13C, TNFR17, and XEDAR), or attached to the membrane via a glycosylphosphatidylinositol (GPI) linker (TNFR10C), or secreted as soluble receptors (TNFR11B and TNFR6B). All TNFRs contain relatively short cysteine-rich domains (CRDs) in the ectodomain, and are involved in interaction with the TNF homology domain (THD) of their ligands. TNFRs often have multiple CRDs (between one and six), with the most frequent configurations of three or four copies; most CRDs possess three disulfide bridges, but could have between one and four. Localized or genome-wide duplication and evolution of the TNFRSF members appear to have paralleled the emergence of the adaptive immune system; teleosts (i.e. ray-finned, bony fish), which possess an immune system with B and T cells, possess primary and secondary lymphoid organs, and are capable of adaptive responses to pathogens also display several characteristics that are different from the mammalian immune system, making teleost TNFSF orthologs and paralogs of interest to better understand immune system evolution and the immunological pathways elicited to pathogens.

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gi 23200031  32 RCDCAGDFHKKIGLFCCRGCPA 53
Cdd:cd13420   1 KCDCASEFQKRNGPFCCRGCPA 22

DEATH domain, found in proteins involved in cell death (apoptosis); Alpha-helical domain present in a variety of proteins with apoptotic functions. Some (but not all) of these domains form homotypic and heterotypic dimers.

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                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 23200031    145 MLQPGPQLYDVMDAVPARRWKEFVRTLGLREAEIEA-VEVEIGRFRDQQYEMLKRWRQQQP--AGLGAVYAALERMGLDG 221
Cdd:smart00005   1 PELTRQKLAKLLDHPLGLDWRELARKLGLSEADIDQiRTEAPRDLAEQSVQLLRLWEQREGknATLGTLLEALRKMGRDD 80

                   ....*...
gi 23200031    222 CVEDLRSR 229
Cdd:smart00005  81 AVELLRSE 88

tumor necrosis factor receptor superfamily member 25 (TNFRSF25), also known as death receptor 3 (DR3); TNFRSF25 (also known as death receptor 3 (DR3), death domain receptor 3 (DDR3), apoptosis-mediating receptor, lymphocyte associated receptor of death (LARD), apoptosis inducing receptor (AIR), APO-3, translocating chain-association membrane protein (TRAMP), WSL-1, WSL-LR or TNFRSF12) is preferentially expressed in thymocytes and lymphocytes, and may play a role in regulating lymphocyte homeostasis. It has been detected in lymphocyte-rich tissues such as colon, intestine, thymus and spleen, as well as in the prostate. Various death domain containing adaptor proteins mediate the signal transduction of this receptor; it activates nuclear factor kappa-B (NFkB) and induces cell apoptosis by associating with TNFRSF1A-associated via death domain (TRADD), which is known to mediate signal transduction of tumor necrosis factor receptors. DR3 associates with tumor necrosis factor (TNF)-like cytokine 1A (TL1A also known as TNFSF15) on activated lymphocytes and induces pro-inflammatory signals; TL1A also binds decoy receptor DcR3 (also known as TNFRSF6B). DR3/DcR3/TL1A expression is increased in both serum and inflamed tissues in autoimmune diseases such as in several autoimmune diseases, including inflammatory bowel disease (IBD), rheumatoid arthritis (RA), allergic asthma, experimental autoimmune encephalomyelitis, type 1 diabetes, ankylosing spondylitis (AS), and primary biliary cirrhosis (PBC), making modulation of TL1A-DR3 interaction a potential therapeutic target.

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gi 23200031  32 RCDCAGDFHKKIGLFCCRGCPA 53
Cdd:cd13420   1 KCDCASEFQKRNGPFCCRGCPA 22

Death domain of Tumor Necrosis Factor Receptor 1; Death Domain (DD) found in tumor necrosis factor receptor-1 (TNFR-1). TNFR-1 has many names including TNFRSF1A, CD120a, p55, p60, and TNFR60. It activates two major intracellular signaling pathways that lead to the activation of the transcription factor NF-kB and the induction of cell death. Upon binding of its ligand TNF, TNFR-1 trimerizes which leads to the recruitment of an adaptor protein named TNFR-associated death domain protein (TRADD) through a DD/DD interaction. Mutations in the TNFRSF1A gene causes TNFR-associated periodic syndrome (TRAPS), a rare disorder characterized recurrent fever, myalgia, abdominal pain, conjunctivitis and skin eruptions. DDs are protein-protein interaction domains found in a variety of domain architectures. Their common feature is that they form homodimers by self-association or heterodimers by associating with other members of the DD superfamily including CARD (Caspase activation and recruitment domain), DED (Death Effector Domain), and PYRIN. They serve as adaptors in signaling pathways and can recruit other proteins into signaling complexes.

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                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 23200031 151 QLYDVMDAVPARRWKEFVRTLGLREAEIEAVEVEIGRFRDQQYEMLKRWRQQQP---AGLGAVYAALERMGLDGCVEDLR 227
Cdd:cd08313   1 LLYTVLDEVPPRRWKEFVRRLGLSDNEIERVELDHRRCRDAQYQMLKVWKERGPrpyATLQHLLSVLRDMELVGCAEDIE 80

Death domain;

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                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 23200031   151 QLYDVMDAVPA--RRWKEFVRTLGLREAEIEAVEVEIGRFRDQQYEMLKRWRQQQP--AGLGAVYAALERMGLDGCVEDL 226
Cdd:pfam00531   3 QLDRLLDPPPPlgKDWRELARKLGLSENEIDEIESENPRLRSQTYELLRLWEQREGknATVGTLLEALRKLGRRDAAEKI 82

                  ....
gi 23200031   227 RSRL 230
Cdd:pfam00531  83 QSIL 86

Death domain of Tumor necrosis factor-Related Apoptosis-Inducing Ligand Receptors; Death Domain (DD) found in Tumor necrosis factor-Related Apoptosis-Inducing Ligand (TRAIL) Receptors. In mammals, this family includes TRAILR1 (also called DR4 or TNFRSF10A) and TRAILR2 (also called DR5, TNFRSF10B, or KILLER). They function as receptors for the cytokine TRAIL and are involved in apoptosis signaling pathways. TRAIL preferentially induces apoptosis in cancer cells while exhibiting little toxicity in normal cells. DDs are protein-protein interaction domains found in a variety of domain architectures. Their common feature is that they form homodimers by self-association or heterodimers by associating with other members of the DD superfamily including CARD (Caspase activation and recruitment domain), DED (Death Effector Domain), and PYRIN. They serve as adaptors in signaling pathways and can recruit other proteins into signaling complexes.

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                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 23200031 157 DAVPARRWKEFVRTLGLREAEIEAVEVEIGRFRDQQYEMLKRWRQQQpaGLGA----VYAALERMGLDGCVEDLRSRL 230
Cdd:cd08315   7 DIVPFKSWKRLMRALGLSDNEIKLAEANDPGSQEPLYQMLNKWLNKT--GRKAsvntLLDALEDLGLRGAAETIADKL 82

tumor necrosis factor receptor superfamily member 25 (TNFRSF25), also known as death receptor 3 (DR3); TNFRSF25 (also known as death receptor 3 (DR3), death domain receptor 3 (DDR3), apoptosis-mediating receptor, lymphocyte associated receptor of death (LARD), apoptosis inducing receptor (AIR), APO-3, translocating chain-association membrane protein (TRAMP), WSL-1, WSL-LR or TNFRSF12) is preferentially expressed in thymocytes and lymphocytes, and may play a role in regulating lymphocyte homeostasis. It has been detected in lymphocyte-rich tissues such as colon, intestine, thymus and spleen, as well as in the prostate. Various death domain containing adaptor proteins mediate the signal transduction of this receptor; it activates nuclear factor kappa-B (NFkB) and induces cell apoptosis by associating with TNFRSF1A-associated via death domain (TRADD), which is known to mediate signal transduction of tumor necrosis factor receptors. DR3 associates with tumor necrosis factor (TNF)-like cytokine 1A (TL1A also known as TNFSF15) on activated lymphocytes and induces pro-inflammatory signals; TL1A also binds decoy receptor DcR3 (also known as TNFRSF6B). DR3/DcR3/TL1A expression is increased in both serum and inflamed tissues in autoimmune diseases such as in several autoimmune diseases, including inflammatory bowel disease (IBD), rheumatoid arthritis (RA), allergic asthma, experimental autoimmune encephalomyelitis, type 1 diabetes, ankylosing spondylitis (AS), and primary biliary cirrhosis (PBC), making modulation of TL1A-DR3 interaction a potential therapeutic target.

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gi 23200031  32 RCDCAGDFHKKIGLFCCRGCPA 53
Cdd:cd13420   1 KCDCASEFQKRNGPFCCRGCPA 22