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Conserved domains on  [gi|68565605|sp|Q96I82|]
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RecName: Full=Kazal-type serine protease inhibitor domain-containing protein 1; Flags: Precursor

Protein Classification

IGFBP and I-set domain-containing protein( domain architecture ID 11989909)

protein containing domains IGFBP, KAZAL_FS, and I-set

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
I-set pfam07679
Immunoglobulin I-set domain;
172-270 1.03e-16

Immunoglobulin I-set domain;


:

Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 73.83  E-value: 1.03e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgDDPHISVQFRGGPQRFEvtgwlqIQAVRPSDEGTY 251
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLR---SSDRFKVTYEGGTYTLT------ISNVQPDDSGKY 71
                          90
                  ....*....|....*....
gi 68565605   252 RCLGRNALGQVEAPASLTV 270
Cdd:pfam07679  72 TCVATNSAGEAEASAELTV 90
IGFBP pfam00219
Insulin-like growth factor binding protein;
54-108 1.15e-10

Insulin-like growth factor binding protein;


:

Pssm-ID: 459717  Cd Length: 53  Bit Score: 56.18  E-value: 1.15e-10
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 68565605    54 APCRPEECAA-PRGCLAGRVRDACGCCWECANLEGQLCDldpsaHFYGHCGEQLEC 108
Cdd:pfam00219   3 PPCDPERCPPpPPGCPAGVVLDGCGCCKVCARQEGEPCG-----VYTPPCGKGLRC 53
KAZAL_FS cd00104
Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit ...
129-168 1.03e-06

Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit serine proteases, such as, trypsin, chyomotrypsin, avian ovomucoids, and elastases. The inhibitory domain has one reactive site peptide bond, which serves the cognate enzyme as substrate. The reactive site peptide bond is a combining loop which has an identical conformation in all Kazal inhibitors and in all enzyme/inhibitor complexes. These Kazal domains (small hydrophobic core of alpha/beta structure with 3 to 4 disulfide bonds) often occur in tandem arrays. Similar domains are also present in follistatin (FS) and follistatin-like family members, which play an important role in tissue specific regulation. The FS domain consists of an N-terminal beta hairpin (FOLN/EGF-like domain) and a Kazal-like domain and has five disulfide bonds. Although the Kazal-like FS substructure is similar to Kazal proteinase inhibitors, no FS domain has yet been shown to be a proteinase inhibitor. Follistatin-like family members include SPARC, also known as, BM-40 or osteonectin, the Gallus gallus Flik protein, as well as, agrin which has a long array of FS domains. The kazal-type inhibitor domain has also been detected in an extracellular loop region of solute carrier 21 (SLC21) family members (organic anion transporters) , which may regulate the specificity of anion uptake. The distant homolog, Ascidian trypsin inhibitor, is included in this CD.


:

Pssm-ID: 238052 [Multi-domain]  Cd Length: 41  Bit Score: 44.57  E-value: 1.03e-06
                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 68565605 129 RSQSPLCGSDGHTYSQICRLQEAARaRPDANLTVAHPGPC 168
Cdd:cd00104   3 KEYDPVCGSDGKTYSNECHLGCAAC-RSGRSITVAHNGPC 41
 
Name Accession Description Interval E-value
I-set pfam07679
Immunoglobulin I-set domain;
172-270 1.03e-16

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 73.83  E-value: 1.03e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgDDPHISVQFRGGPQRFEvtgwlqIQAVRPSDEGTY 251
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLR---SSDRFKVTYEGGTYTLT------ISNVQPDDSGKY 71
                          90
                  ....*....|....*....
gi 68565605   252 RCLGRNALGQVEAPASLTV 270
Cdd:pfam07679  72 TCVATNSAGEAEASAELTV 90
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
186-270 1.05e-15

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 71.00  E-value: 1.05e-15
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605    186 GQDVIFGCEVFAYPMASIEWRKDGLdiQLPGDDPHISVQFRGGpqrfevTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:smart00410   9 GESVTLSCEASGSPPPEVTWYKQGG--KLLAESGRFSVSRSGS------TSTLTISNVTPEDSGTYTCAATNSSGSASSG 80

                   ....*
gi 68565605    266 ASLTV 270
Cdd:smart00410  81 TTLTV 85
IgI_4_MYLK-like cd20976
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ...
172-270 5.12e-15

Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain from smooth muscle myosin light chain kinase (MYLK) and similar domains. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of this group shows that the fourth Ig-like domain from myosin light chain kinase lacks this strand and thus belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409568 [Multi-domain]  Cd Length: 90  Bit Score: 69.20  E-value: 5.12e-15
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVQfrggpqrfevTGWLQIQAVRPSDEGTY 251
Cdd:cd20976   2 PSFSSVPKDLEAVEGQDFVAQCSARGKPVPRITWIRNAQPLQYAADRSTCEAG----------VGELHIQDVLPEDHGTY 71
                        90
                ....*....|....*....
gi 68565605 252 RCLGRNALGQVEAPASLTV 270
Cdd:cd20976  72 TCLAKNAAGQVSCSAWVTV 90
IGFBP pfam00219
Insulin-like growth factor binding protein;
54-108 1.15e-10

Insulin-like growth factor binding protein;


Pssm-ID: 459717  Cd Length: 53  Bit Score: 56.18  E-value: 1.15e-10
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 68565605    54 APCRPEECAA-PRGCLAGRVRDACGCCWECANLEGQLCDldpsaHFYGHCGEQLEC 108
Cdd:pfam00219   3 PPCDPERCPPpPPGCPAGVVLDGCGCCKVCARQEGEPCG-----VYTPPCGKGLRC 53
KAZAL_FS cd00104
Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit ...
129-168 1.03e-06

Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit serine proteases, such as, trypsin, chyomotrypsin, avian ovomucoids, and elastases. The inhibitory domain has one reactive site peptide bond, which serves the cognate enzyme as substrate. The reactive site peptide bond is a combining loop which has an identical conformation in all Kazal inhibitors and in all enzyme/inhibitor complexes. These Kazal domains (small hydrophobic core of alpha/beta structure with 3 to 4 disulfide bonds) often occur in tandem arrays. Similar domains are also present in follistatin (FS) and follistatin-like family members, which play an important role in tissue specific regulation. The FS domain consists of an N-terminal beta hairpin (FOLN/EGF-like domain) and a Kazal-like domain and has five disulfide bonds. Although the Kazal-like FS substructure is similar to Kazal proteinase inhibitors, no FS domain has yet been shown to be a proteinase inhibitor. Follistatin-like family members include SPARC, also known as, BM-40 or osteonectin, the Gallus gallus Flik protein, as well as, agrin which has a long array of FS domains. The kazal-type inhibitor domain has also been detected in an extracellular loop region of solute carrier 21 (SLC21) family members (organic anion transporters) , which may regulate the specificity of anion uptake. The distant homolog, Ascidian trypsin inhibitor, is included in this CD.


Pssm-ID: 238052 [Multi-domain]  Cd Length: 41  Bit Score: 44.57  E-value: 1.03e-06
                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 68565605 129 RSQSPLCGSDGHTYSQICRLQEAARaRPDANLTVAHPGPC 168
Cdd:cd00104   3 KEYDPVCGSDGKTYSNECHLGCAAC-RSGRSITVAHNGPC 41
KAZAL smart00280
Kazal type serine protease inhibitors; Kazal type serine protease inhibitors and ...
129-168 5.87e-06

Kazal type serine protease inhibitors; Kazal type serine protease inhibitors and follistatin-like domains.


Pssm-ID: 197624  Cd Length: 46  Bit Score: 42.67  E-value: 5.87e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|
gi 68565605    129 RSQSPLCGSDGHTYSQICRLQEAARARpDANLTVAHPGPC 168
Cdd:smart00280   8 REYDPVCGSDGVTYSNECHLCKAACES-GKSIEVKHDGPC 46
IB smart00121
Insulin growth factor-binding protein homologues; High affinity binding partners of ...
53-109 6.55e-06

Insulin growth factor-binding protein homologues; High affinity binding partners of insulin-like growth factors.


Pssm-ID: 197525  Cd Length: 75  Bit Score: 43.22  E-value: 6.55e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 68565605     53 CAPCRPEECAA-PRGCLAGRVRDACGCCWECANLEGQLCDLDpsahfYGHCGEQLECR 109
Cdd:smart00121   3 CPPCDPARCPPcPPGCAELVRLDGCGCCPVCARQEGEPCGVY-----TPRCAPGLRCQ 55
 
Name Accession Description Interval E-value
I-set pfam07679
Immunoglobulin I-set domain;
172-270 1.03e-16

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 73.83  E-value: 1.03e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgDDPHISVQFRGGPQRFEvtgwlqIQAVRPSDEGTY 251
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLR---SSDRFKVTYEGGTYTLT------ISNVQPDDSGKY 71
                          90
                  ....*....|....*....
gi 68565605   252 RCLGRNALGQVEAPASLTV 270
Cdd:pfam07679  72 TCVATNSAGEAEASAELTV 90
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
186-270 1.05e-15

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 71.00  E-value: 1.05e-15
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605    186 GQDVIFGCEVFAYPMASIEWRKDGLdiQLPGDDPHISVQFRGGpqrfevTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:smart00410   9 GESVTLSCEASGSPPPEVTWYKQGG--KLLAESGRFSVSRSGS------TSTLTISNVTPEDSGTYTCAATNSSGSASSG 80

                   ....*
gi 68565605    266 ASLTV 270
Cdd:smart00410  81 TTLTV 85
IgI_4_MYLK-like cd20976
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ...
172-270 5.12e-15

Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain from smooth muscle myosin light chain kinase (MYLK) and similar domains. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of this group shows that the fourth Ig-like domain from myosin light chain kinase lacks this strand and thus belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409568 [Multi-domain]  Cd Length: 90  Bit Score: 69.20  E-value: 5.12e-15
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVQfrggpqrfevTGWLQIQAVRPSDEGTY 251
Cdd:cd20976   2 PSFSSVPKDLEAVEGQDFVAQCSARGKPVPRITWIRNAQPLQYAADRSTCEAG----------VGELHIQDVLPEDHGTY 71
                        90
                ....*....|....*....
gi 68565605 252 RCLGRNALGQVEAPASLTV 270
Cdd:cd20976  72 TCLAKNAAGQVSCSAWVTV 90
IgI_5_Robo cd20952
Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the ...
174-270 9.83e-14

Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fifth Ig-like domain of Roundabout (Robo) homolog 1/2 and similar domains. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, -2, and -3), and three mammalian Slit homologs (Slit-1,-2, -3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, -2, and -3 are expressed by commissural neurons in the vertebrate spinal cord and Slits 1, -2, -3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of slit responsiveness, antagonizes slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. The fifth Ig-like domain of Robo 1 and 2 is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors


Pssm-ID: 409544 [Multi-domain]  Cd Length: 87  Bit Score: 65.60  E-value: 9.83e-14
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 174 IVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGldIQLPGDDPHISVQFRGGpqrfevtgwLQIQAVRPSDEGTYRC 253
Cdd:cd20952   2 ILQGPQNQTVAVGGTVVLNCQATGEPVPTISWLKDG--VPLLGKDERITTLENGS---------LQIKGAEKSDTGEYTC 70
                        90
                ....*....|....*..
gi 68565605 254 LGRNALGQVEAPASLTV 270
Cdd:cd20952  71 VALNLSGEATWSAVLDV 87
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
172-257 1.57e-12

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 61.81  E-value: 1.57e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGldiQLPGDDPHISVQFRGGpqrfevTGWLQIQAVRPSDEGTY 251
Cdd:pfam13927   2 PVITVSPSSVTVREGETVTLTCEATGSPPPTITWYKNG---EPISSGSTRSRSLSGS------NSTLTISNVTRSDAGTY 72

                  ....*.
gi 68565605   252 RCLGRN 257
Cdd:pfam13927  73 TCVASN 78
IGFBP pfam00219
Insulin-like growth factor binding protein;
54-108 1.15e-10

Insulin-like growth factor binding protein;


Pssm-ID: 459717  Cd Length: 53  Bit Score: 56.18  E-value: 1.15e-10
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 68565605    54 APCRPEECAA-PRGCLAGRVRDACGCCWECANLEGQLCDldpsaHFYGHCGEQLEC 108
Cdd:pfam00219   3 PPCDPERCPPpPPGCPAGVVLDGCGCCKVCARQEGEPCG-----VYTPPCGKGLRC 53
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
189-260 4.08e-10

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409353 [Multi-domain]  Cd Length: 70  Bit Score: 55.03  E-value: 4.08e-10
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 68565605 189 VIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVQfrggpqrfeVTGWLQIQAVRPSDEGTYRCLGRNALG 260
Cdd:cd00096   1 VTLTCSASGNPPPTITWYKNGKPLPPSSRDSRRSEL---------GNGTLTISNVTLEDSGTYTCVASNSAG 63
IgI_3_Robo cd05725
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
175-270 4.63e-10

Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409390 [Multi-domain]  Cd Length: 83  Bit Score: 55.09  E-value: 4.63e-10
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 175 VSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDglDIQLPGDDPHIsvqfrggpqRFEVTgwLQIQAVRPSDEGTYRCL 254
Cdd:cd05725   1 VKRPQNQVVLVDDSAEFQCEVGGDPVPTVRWRKE--DGELPKGRYEI---------LDDHS--LKIRKVTAGDMGSYTCV 67
                        90
                ....*....|....*.
gi 68565605 255 GRNALGQVEAPASLTV 270
Cdd:cd05725  68 AENMVGKIEASATLTV 83
IgI_4_Neogenin_like cd05723
Fourth immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set ...
177-270 5.14e-10

Fourth immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain in neogenin and related proteins. Neogenin is a cell surface protein which is expressed in the developing nervous system of vertebrate embryos in the growing nerve cells. It is also expressed in other embryonic tissues, and may play a general role in developmental processes such as cell migration, cell-cell recognition, and tissue growth regulation. Included in this group is the tumor suppressor protein DCC which is deleted in colorectal carcinoma. DCC and neogenin each have four Ig-like domains followed by six fibronectin type III domains, a transmembrane domain, and an intracellular domain. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409388  Cd Length: 84  Bit Score: 55.28  E-value: 5.14e-10
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 177 HPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGlDIQLPGDdphisvqfrggpqRFEVTGW--LQIQAVRPSDEGTYRCL 254
Cdd:cd05723   3 KPSNIYAHESMDIVFECEVTGKPTPTVKWVKNG-DVVIPSD-------------YFKIVKEhnLQVLGLVKSDEGFYQCI 68
                        90
                ....*....|....*.
gi 68565605 255 GRNALGQVEAPASLTV 270
Cdd:cd05723  69 AENDVGNAQASAQLII 84
IgC_1_Robo cd07693
First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar ...
172-270 1.44e-08

First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain in Roundabout (Robo) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit1, Slit2, Slit3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit1, Slit2,and Slit3 are expressed at the ventral midline. Robo3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site.


Pssm-ID: 409490 [Multi-domain]  Cd Length: 99  Bit Score: 51.40  E-value: 1.44e-08
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDP--HISVQFRGGPQRFEVTGWLQIQavrpSDEG 249
Cdd:cd07693   1 PRIVEHPSDLIVSKGDPATLNCKAEGRPTPTIQWLKNGQPLETDKDDPrsHRIVLPSGSLFFLRVVHGRKGR----SDEG 76
                        90       100
                ....*....|....*....|..
gi 68565605 250 TYRCLGRNALGQ-VEAPASLTV 270
Cdd:cd07693  77 VYVCVAHNSLGEaVSRNASLEV 98
IgI_4_hemolin-like cd20978
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
172-270 2.31e-08

Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409570 [Multi-domain]  Cd Length: 88  Bit Score: 50.47  E-value: 2.31e-08
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHP-YDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgddphisvqfrGGPQRFEVT-GWLQIQAVRPSDEG 249
Cdd:cd20978   1 PKFIQKPeKNVVVKGGQDVTLPCQVTGVPQPKITWLHNGKPLQ-------------GPMERATVEdGTLTIINVQPEDTG 67
                        90       100
                ....*....|....*....|.
gi 68565605 250 TYRCLGRNALGQVEAPASLTV 270
Cdd:cd20978  68 YYGCVATNEIGDIYTETLLHV 88
IgI_1_Neogenin_like cd05722
First immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set of ...
175-257 2.49e-08

First immunoglobulin (Ig)-like domain in neogenin, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain in neogenin and related proteins. Neogenin is a cell surface protein which is expressed in the developing nervous system of vertebrate embryos in the growing nerve cells. It is also expressed in other embryonic tissues and may play a general role in developmental processes such as cell migration, cell-cell recognition, and tissue growth regulation. Included in this group is the tumor suppressor protein DCC which is deleted in colorectal carcinoma. DCC and neogenin each have four Ig-like domains followed by six fibronectin type III domains, a transmembrane domain, and an intracellular domain. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409387  Cd Length: 97  Bit Score: 50.94  E-value: 2.49e-08
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 175 VSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHisVQFRGGpqRFEVTGWLQIQAVRPsDEGTYRCL 254
Cdd:cd05722   5 LSEPSDIVAMRGGPVVLNCSAESDPPPKIEWKKDGVLLNLVSDERR--QQLPNG--SLLITSVVHSKHNKP-DEGFYQCV 79

                ...
gi 68565605 255 GRN 257
Cdd:cd05722  80 AQN 82
IgI_5_Dscam cd20958
Fifth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
184-261 2.25e-07

Fifth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fifth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409550 [Multi-domain]  Cd Length: 89  Bit Score: 47.95  E-value: 2.25e-07
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 68565605 184 VTGQDVIFGCEVFAYPMASIEWRKDGldIQLPgdDPHisvqfRggpQRFEVTGWLQIQAV-RPSDEGTYRCLGRNALGQ 261
Cdd:cd20958  13 VAGQTLRLHCPVAGYPISSITWEKDG--RRLP--LNH-----R---QRVFPNGTLVIENVqRSSDEGEYTCTARNQQGQ 79
IgI_2_Robo cd05724
Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
178-270 4.25e-07

Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of the Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit-2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409389 [Multi-domain]  Cd Length: 87  Bit Score: 47.01  E-value: 4.25e-07
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 178 PYDTWNVTGQDVIFGCEV-FAYPMASIEWRKDGLDIQLpgDDPHISVqfRGGpqrfevtGWLQIQAVRPSDEGTYRCLGR 256
Cdd:cd05724   4 PSDTQVAVGEMAVLECSPpRGHPEPTVSWRKDGQPLNL--DNERVRI--VDD-------GNLLIAEARKSDEGTYKCVAT 72
                        90
                ....*....|....*
gi 68565605 257 NALGQVE-APASLTV 270
Cdd:cd05724  73 NMVGEREsRAARLSV 87
IgI_3_Contactin cd04968
Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) ...
172-270 6.41e-07

Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409357 [Multi-domain]  Cd Length: 88  Bit Score: 46.77  E-value: 6.41e-07
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSH-PYDTWNVTGQDVIFGCEVFAYPMASIEWRK-DGLdiQLPGDDPHISvqfrggpqrfevTGWLQIQAVRPSDEG 249
Cdd:cd04968   1 PSIKVRfPADTYALKGQTVTLECFALGNPVPQIKWRKvDGS--PSSQWEITTS------------EPVLEIPNVQFEDEG 66
                        90       100
                ....*....|....*....|.
gi 68565605 250 TYRCLGRNALGQVEAPASLTV 270
Cdd:cd04968  67 TYECEAENSRGKDTVQGRIIV 87
KAZAL_FS cd00104
Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit ...
129-168 1.03e-06

Kazal type serine protease inhibitors and follistatin-like domains. Kazal inhibitors inhibit serine proteases, such as, trypsin, chyomotrypsin, avian ovomucoids, and elastases. The inhibitory domain has one reactive site peptide bond, which serves the cognate enzyme as substrate. The reactive site peptide bond is a combining loop which has an identical conformation in all Kazal inhibitors and in all enzyme/inhibitor complexes. These Kazal domains (small hydrophobic core of alpha/beta structure with 3 to 4 disulfide bonds) often occur in tandem arrays. Similar domains are also present in follistatin (FS) and follistatin-like family members, which play an important role in tissue specific regulation. The FS domain consists of an N-terminal beta hairpin (FOLN/EGF-like domain) and a Kazal-like domain and has five disulfide bonds. Although the Kazal-like FS substructure is similar to Kazal proteinase inhibitors, no FS domain has yet been shown to be a proteinase inhibitor. Follistatin-like family members include SPARC, also known as, BM-40 or osteonectin, the Gallus gallus Flik protein, as well as, agrin which has a long array of FS domains. The kazal-type inhibitor domain has also been detected in an extracellular loop region of solute carrier 21 (SLC21) family members (organic anion transporters) , which may regulate the specificity of anion uptake. The distant homolog, Ascidian trypsin inhibitor, is included in this CD.


Pssm-ID: 238052 [Multi-domain]  Cd Length: 41  Bit Score: 44.57  E-value: 1.03e-06
                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 68565605 129 RSQSPLCGSDGHTYSQICRLQEAARaRPDANLTVAHPGPC 168
Cdd:cd00104   3 KEYDPVCGSDGKTYSNECHLGCAAC-RSGRSITVAHNGPC 41
IgI_1_MuSK cd20970
agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of ...
174-270 1.05e-06

agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domains (Ig1) of the Muscle-specific kinase (MuSK). MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409562 [Multi-domain]  Cd Length: 92  Bit Score: 45.96  E-value: 1.05e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 174 IVSHPYDTWNVT---GQDVIFGCEVFAYPMASIEWRKDGLDIQLpgddphisvqfrgGPQRFEVTGW---LQIQAVRPSD 247
Cdd:cd20970   2 VISTPQPSFTVTareGENATFMCRAEGSPEPEISWTRNGNLIIE-------------FNTRYIVRENgttLTIRNIRRSD 68
                        90       100
                ....*....|....*....|....
gi 68565605 248 EGTYRCLGRN-ALGQVEAPASLTV 270
Cdd:cd20970  69 MGIYLCIASNgVPGSVEKRITLQV 92
Ig3_L1-CAM cd05876
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here ...
186-270 1.10e-06

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains, five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM.


Pssm-ID: 409460 [Multi-domain]  Cd Length: 83  Bit Score: 45.67  E-value: 1.10e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKdgLDIQLPGDdphisvqfRGGPQRFevTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:cd05876  10 GQSLVLECIAEGLPTPTVKWLR--PSGPLPPD--------RVKYQNH--NKTLQLLNVGESDDGEYVCLAENSLGSARHA 77

                ....*
gi 68565605 266 ASLTV 270
Cdd:cd05876  78 YYVTV 82
IgI_4_Robo cd05726
Fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
173-270 1.30e-06

Fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; Members here are composed the fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1, Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409391 [Multi-domain]  Cd Length: 98  Bit Score: 46.10  E-value: 1.30e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 173 QIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQL-PGDDPHISVQFRGGPqrfevTGWLQIQAVRPSDEGTY 251
Cdd:cd05726   1 QFVVKPRDQVVALGRTVTFQCETKGNPQPAIFWQKEGSQNLLfPYQPPQPSSRFSVSP-----TGDLTITNVQRSDVGYY 75
                        90
                ....*....|....*....
gi 68565605 252 RCLGRNALGQVEAPASLTV 270
Cdd:cd05726  76 ICQALNVAGSILAKAQLEV 94
IgC2_3_Dscam cd20957
Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
186-268 2.23e-06

Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C, and C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409549 [Multi-domain]  Cd Length: 88  Bit Score: 45.22  E-value: 2.23e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLdiQLPGDD-PHISVQFRggpqrfevtgwLQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd20957  16 GRTAVFNCSVTGNPIHTVLWMKDGK--PLGHSSrVQILSEDV-----------LVIPSVKREDKGMYQCFVRNDGDSAQA 82

                ....
gi 68565605 265 PASL 268
Cdd:cd20957  83 TAEL 86
Ig3_Peroxidasin cd05745
Third immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
186-270 2.65e-06

Third immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the third immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143222 [Multi-domain]  Cd Length: 74  Bit Score: 44.54  E-value: 2.65e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGldIQLPGDDPHISVQfrggpqrfevTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:cd05745   2 GQTVDFLCEAQGYPQPVIAWTKGG--SQLSVDRRHLVLS----------SGTLRISRVALHDQGQYECQAVNIVGSQRTV 69

                ....*
gi 68565605 266 ASLTV 270
Cdd:cd05745  70 AQLTV 74
Ig5_Contactin cd04969
Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth ...
184-270 3.65e-06

Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409358 [Multi-domain]  Cd Length: 89  Bit Score: 44.37  E-value: 3.65e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 184 VTGQDVIFGCEVFAYPMASIEWRKDGldiQLPGDDPHISVQFRGGpqrfevtgwLQIQAVRPSDEGTYRCLGRNALGQVE 263
Cdd:cd04969  15 AKGGDVIIECKPKASPKPTISWSKGT---ELLTNSSRICILPDGS---------LKIKNVTKSDEGKYTCFAVNFFGKAN 82

                ....*..
gi 68565605 264 APASLTV 270
Cdd:cd04969  83 STGSLSV 89
IgI_titin_I1-like cd20951
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ...
172-270 5.80e-06

Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin domain I1 of the titin I-band and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. The two sheets are linked together by a conserved disulfide bond between B strand and F strand. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The Ig I1 domain of the titin I-band is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409543 [Multi-domain]  Cd Length: 94  Bit Score: 43.95  E-value: 5.80e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSH--PYDTWNvtGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVQFRGGPQRfevtgwLQIQAVRPSDEG 249
Cdd:cd20951   1 PEFIIRlqSHTVWE--KSDAKLRVEVQGKPDPEVKWYKNGVPIDPSSIPGKYKIESEYGVHV------LHIRRVTVEDSA 72
                        90       100
                ....*....|....*....|.
gi 68565605 250 TYRCLGRNALGQVEAPASLTV 270
Cdd:cd20951  73 VYSAVAKNIHGEASSSASVVV 93
KAZAL smart00280
Kazal type serine protease inhibitors; Kazal type serine protease inhibitors and ...
129-168 5.87e-06

Kazal type serine protease inhibitors; Kazal type serine protease inhibitors and follistatin-like domains.


Pssm-ID: 197624  Cd Length: 46  Bit Score: 42.67  E-value: 5.87e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|
gi 68565605    129 RSQSPLCGSDGHTYSQICRLQEAARARpDANLTVAHPGPC 168
Cdd:smart00280   8 REYDPVCGSDGVTYSNECHLCKAACES-GKSIEVKHDGPC 46
IB smart00121
Insulin growth factor-binding protein homologues; High affinity binding partners of ...
53-109 6.55e-06

Insulin growth factor-binding protein homologues; High affinity binding partners of insulin-like growth factors.


Pssm-ID: 197525  Cd Length: 75  Bit Score: 43.22  E-value: 6.55e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 68565605     53 CAPCRPEECAA-PRGCLAGRVRDACGCCWECANLEGQLCDLDpsahfYGHCGEQLECR 109
Cdd:smart00121   3 CPPCDPARCPPcPPGCAELVRLDGCGCCPVCARQEGEPCGVY-----TPRCAPGLRCQ 55
ig pfam00047
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ...
186-268 7.89e-06

Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.


Pssm-ID: 395002  Cd Length: 86  Bit Score: 43.34  E-value: 7.89e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   186 GQDVIFGCEV-FAYPMASIEWRKDGLDIQLPGDDPHISVQFRGGPqrfevtgwLQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:pfam00047  11 GDSATLTCSAsTGSPGPDVTWSKEGGTLIESLKVKHDNGRTTQSS--------LLISNVTKEDAGTYTCVVNNPGGSATL 82

                  ....
gi 68565605   265 PASL 268
Cdd:pfam00047  83 STSL 86
IgI_3_NCAM-1 cd05730
Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of ...
185-270 9.82e-06

Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule (NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM), and heterophilic (NCAM-non-NCAM), interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions) through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain.


Pssm-ID: 143207 [Multi-domain]  Cd Length: 95  Bit Score: 43.38  E-value: 9.82e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 185 TGQDVIFGCEVFAYPMASIEWRKDGLDIQlPGDDPHIsvqFRggpqrfEVTGWLQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd05730  17 LGQSVTLACDADGFPEPTMTWTKDGEPIE-SGEEKYS---FN------EDGSEMTILDVDKLDEAEYTCIAENKAGEQEA 86

                ....*.
gi 68565605 265 PASLTV 270
Cdd:cd05730  87 EIHLKV 92
IgI_7_Dscam cd20954
Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar ...
172-260 1.16e-05

Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the seventh immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409546 [Multi-domain]  Cd Length: 96  Bit Score: 43.07  E-value: 1.16e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDgldiqlPGDDPHISVQFRGGPQ-RFEVTGWLQIQAVRPSDEGT 250
Cdd:cd20954   2 PRWIVEPVDANVAAGQDVMLHCQADGFPTPTVTWKKA------TGSTPGEYKDLLYDPNvRILPNGTLVFGHVQKENEGH 75
                        90
                ....*....|
gi 68565605 251 YRCLGRNALG 260
Cdd:cd20954  76 YLCEAKNGIG 85
IgI_3_WFIKKN-like cd05765
Third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz ...
172-270 1.25e-05

Third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz and NTR domain-containing protein), and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin-like domain of the human WFIKKN (WAP, follistatin, immunoglobulin, Kunitz and NTR domain-containing protein) and similar proteins. WFIKKN is a secreted protein that consists of multiple types of protease inhibitory modules, including two tandem Kunitz-type protease inhibitor-domains. The Ig superfamily is a heterogenous group of proteins built on a common fold comprised of a sandwich of two beta sheets. Members of the Ig superfamily are components of immunoglobulin, neuroglia, cell surface glycoproteins, such as T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, such as butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409422 [Multi-domain]  Cd Length: 95  Bit Score: 43.31  E-value: 1.25e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKdgldiQLPGDDPHISV--QFRGGpqrFEVT--GWLQIQAVRPSD 247
Cdd:cd05765   1 PALVNSPTHQTVKVGETASFHCDVTGRPQPEITWEK-----QVPGKENLIMRpnHVRGN---VVVTniGQLVIYNAQPQD 72
                        90       100
                ....*....|....*....|...
gi 68565605 248 EGTYRCLGRNALGQVEAPASLTV 270
Cdd:cd05765  73 AGLYTCTARNSGGLLRANFPLSV 95
IgI_hNeurofascin_like cd05875
Immunoglobulin (Ig)-like domain of human neurofascin (NF); member of the I-set of Ig ...
172-260 1.46e-05

Immunoglobulin (Ig)-like domain of human neurofascin (NF); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain of human neurofascin (NF). NF belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region, and a cytoplasmic domain. NF has many alternatively spliced isoforms having different temporal expression patterns during development. NF participates in axon subcellular targeting and synapse formation, however little is known of the functions of the different isoforms. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lacks a C" strand.


Pssm-ID: 409459  Cd Length: 95  Bit Score: 43.04  E-value: 1.46e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIF-GCEVFAYPMASIEWRKDGLDIQLpGDDPHISVQFRGGPQRFEVTGwlqiqAVRPSD-EG 249
Cdd:cd05875   1 PTITKQSAKDYIVDPRDNILiECEAKGNPVPTFHWTRNGKFFNV-AKDPRVSMRRRSGTLVIDFRG-----GGRPEDyEG 74
                        90
                ....*....|.
gi 68565605 250 TYRCLGRNALG 260
Cdd:cd05875  75 EYQCFARNKFG 85
IgI_1_Contactin cd04967
First immunoglobulin (Ig) domain of contactin; member of the I-set of (Ig) superfamily domains; ...
171-262 1.65e-05

First immunoglobulin (Ig) domain of contactin; member of the I-set of (Ig) superfamily domains; The members here are composed of the first immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409356 [Multi-domain]  Cd Length: 96  Bit Score: 43.00  E-value: 1.65e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 171 GPQIVSHPYDTWNVTGQD---VIFGCEVFAYPMASIEWRKDGLDIQLPGDDphisvqfrggpqRFE-VTGWLQI-QAVRP 245
Cdd:cd04967   1 GPVFEEQPDDTIFPEDSDekkVALNCRARANPVPSYRWLMNGTEIDLESDY------------RYSlVDGTLVIsNPSKA 68
                        90
                ....*....|....*..
gi 68565605 246 SDEGTYRCLGRNALGQV 262
Cdd:cd04967  69 KDAGHYQCLATNTVGSV 85
Ig_Pro_neuregulin cd05750
Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the ...
186-270 2.05e-05

Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the immunoglobulin (Ig)-like domain in neuregulins (NRGs). NRGs are signaling molecules which participate in cell-cell interactions in the nervous system, breast, heart, and other organ systems, and are implicated in the pathology of diseases including schizophrenia, multiple sclerosis, and breast cancer. There are four members of the neuregulin gene family (NRG-1, NRG-2, NRG-3, and NRG-4). The NRG-1 protein, binds to and activates the tyrosine kinases receptors ErbB3 and ErbB4, initiating signaling cascades. The other NRGs proteins bind one or the other or both of these ErbBs. NRG-1 has multiple functions: in the brain it regulates various processes such as radial glia formation and neuronal migration, dendritic development, and expression of neurotransmitters receptors, while in the peripheral nervous system NRG-1 regulates processes such as target cell differentiation, and Schwann cell survival. There are many NRG-1 isoforms which arise from the alternative splicing of mRNA. Less is known of the functions of the other NRGs. NRG-2 and NRG-3 are expressed predominantly in the nervous system. NRG-2 is expressed by motor neurons and terminal Schwann cells, and is concentrated near synaptic sites and may be a signal that regulates synaptic differentiation. NRG-4 has been shown to direct pancreatic islet cell development towards the delta-cell lineage.


Pssm-ID: 409408 [Multi-domain]  Cd Length: 92  Bit Score: 42.50  E-value: 2.05e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFA-YPMASIEWRKDGLDIQLPGDdphISVQFRGGPQRFEvtgwLQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd05750  14 GSKLVLKCEATSeNPSPRYRWFKDGKELNRKRP---KNIKIRNKKKNSE----LQINKAKLEDSGEYTCVVENILGKDTV 86

                ....*.
gi 68565605 265 PASLTV 270
Cdd:cd05750  87 TGNVTV 92
IgI_LRIG1-like cd05763
Immunoglobulin (Ig)-like ectodomain of the LRIG1 (Leucine-rich Repeats And Immunoglobulin-like ...
178-271 2.52e-05

Immunoglobulin (Ig)-like ectodomain of the LRIG1 (Leucine-rich Repeats And Immunoglobulin-like Domains Protein 1) and similar proteins; member of the I-set of IgSF domains; The members here are composed of subgroup of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. The ectodomain of LRIG1 has two distinct regions: the proposed 15 LRRs and three Ig-like domains closer to the membrane. LRIG1 has been reported to interact with many receptor tyrosine kinases, GDNF/c-Ret, E-cadherin, JAK/STAT, c-Met, and the EGFR family signaling systems. Immunoglobulin Superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The structure of the LRIG1 extracellular Ig domain lacks a C" strand and thus is better described as a member of the I-set of IgSF domains.


Pssm-ID: 409420 [Multi-domain]  Cd Length: 91  Bit Score: 42.22  E-value: 2.52e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 178 PYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGldiqlpGDDphisvqFRGGPQR----FEVTGWLQIQAVRPSDEGTYRC 253
Cdd:cd05763   6 PHDITIRAGSTARLECAATGHPTPQIAWQKDG------GTD------FPAARERrmhvMPEDDVFFIVDVKIEDTGVYSC 73
                        90
                ....*....|....*...
gi 68565605 254 LGRNALGQVEAPASLTVL 271
Cdd:cd05763  74 TAQNSAGSISANATLTVL 91
IgI_Myotilin_C_like cd05744
Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of ...
172-270 6.56e-05

Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain in myotilin, palladin, and myopalladin. Myotilin, palladin, and myopalladin function as scaffolds that regulate actin organization. Myotilin and myopalladin are most abundant in skeletal and cardiac muscle; palladin is ubiquitously expressed in the organs of developing vertebrates and plays a key role in cellular morphogenesis. The three family members each interact with specific molecular partners with all three binding to alpha-actinin; In addition, palladin also binds to vasodilator-stimulated phosphoprotein (VASP) and ezrin, myotilin binds to filamin and actin, and myopalladin also binds to nebulin and cardiac ankyrin repeat protein (CARP). This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409405 [Multi-domain]  Cd Length: 91  Bit Score: 40.94  E-value: 6.56e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 172 PQIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQLpgDDPHISVQFRGGPQRfevtgwLQIQAVRPSDEGTY 251
Cdd:cd05744   1 PHFLQAPGDLEVQEGRLCRFDCKVSGLPTPDLFWQLNGKPVRP--DSAHKMLVRENGRHS------LIIEPVTKRDAGIY 72
                        90
                ....*....|....*....
gi 68565605 252 RCLGRNALGQVEAPASLTV 270
Cdd:cd05744  73 TCIARNRAGENSFNAELVV 91
IgI_2_MuSK cd20968
agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ...
173-270 7.23e-05

agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ectodomain; a member of the I-set of Ig superfamily domains; The members here are composed of the second immunoglobulin-like (Ig) domains of the Muscle-specific kinase (MuSK) ectodomain. MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409560 [Multi-domain]  Cd Length: 88  Bit Score: 40.69  E-value: 7.23e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 173 QIVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgDDPHISVqfrggpqrFEvTGWLQIQAVRPSDEGTYR 252
Cdd:cd20968   1 KITRPPTNVTIIEGLKAVLPCTTMGNPKPSVSWIKGDDLIK---ENNRIAV--------LE-SGSLRIHNVQKEDAGQYR 68
                        90
                ....*....|....*....
gi 68565605 253 CLGRNALGQV-EAPASLTV 270
Cdd:cd20968  69 CVAKNSLGIAySKPVTIEV 87
IgI_2_FGFR_like cd05729
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar ...
186-270 7.31e-05

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar domains; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three Ig-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans. This group also contains fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409393 [Multi-domain]  Cd Length: 95  Bit Score: 41.05  E-value: 7.31e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLDIQlpgddPHisvqFRGGPQRFEVTGW-LQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd05729  19 ANKVRLECGAGGNPMPNITWLKDGKEFK-----KE----HRIGGTKVEEKGWsLIIERAIPRDKGKYTCIVENEYGSINH 89

                ....*.
gi 68565605 265 PASLTV 270
Cdd:cd05729  90 TYDVDV 95
IgI_Titin_like cd05747
Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the ...
174-269 7.81e-05

Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain from the C-terminus of human titin x and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is gigantic; depending on isoform composition it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone and appears to function similar to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 143224 [Multi-domain]  Cd Length: 92  Bit Score: 40.80  E-value: 7.81e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 174 IVSHPYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGldiqlpgddphisvQFRGGPQRFEVT-----GWLQIQAVRPSDE 248
Cdd:cd05747   6 ILTKPRSLTVSEGESARFSCDVDGEPAPTVTWMREG--------------QIIVSSQRHQITsteykSTFEISKVQMSDE 71
                        90       100
                ....*....|....*....|.
gi 68565605 249 GTYRCLGRNALGQVEAPASLT 269
Cdd:cd05747  72 GNYTVVVENSEGKQEAQFTLT 92
Ig3_L1-CAM_like cd05731
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar ...
186-270 7.97e-05

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar domains; The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM and human neurofascin.


Pssm-ID: 409394 [Multi-domain]  Cd Length: 83  Bit Score: 40.47  E-value: 7.97e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLDiqLPGDdphisvqfRGGPQRFEVTgwLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:cd05731  10 GGVLLLECIAEGLPTPDIRWIKLGGE--LPKG--------RTKFENFNKT--LKIENVSEADSGEYQCTASNTMGSARHT 77

                ....*
gi 68565605 266 ASLTV 270
Cdd:cd05731  78 ISVTV 82
Ig4_Peroxidasin cd05746
Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
193-269 8.13e-05

Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the fourth immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted, and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143223  Cd Length: 69  Bit Score: 40.24  E-value: 8.13e-05
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 68565605 193 CEVFAYPMASIEWRKDGLDIQLPGDDpHISVQfrggpqrfevtGWLQIQAVRPSDEGTYRCLGRNALGQVEAPASLT 269
Cdd:cd05746   5 CSAQGDPEPTITWNKDGVQVTESGKF-HISPE-----------GYLAIRDVGVADQGRYECVARNTIGYASVSMVLS 69
Ig_Perlecan_like cd05743
Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan ...
186-262 1.05e-04

Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan, also known as HSPG2, and similar proteins. Perlecan consists of five domains: domain I has three putative heparan sulfate attachment sites, domain II has four LDL receptor-like repeats, and one Ig-like repeat, domain III resembles the short arm of laminin chains, domain IV has multiple Ig-like repeats (21 repeats in human perlecan), and domain V resembles the globular G domain of the laminin A chain and internal repeats of EGF. Perlecan may participate in a variety of biological functions including cell binding, LDL-metabolism, basement membrane assembly and selective permeability, calcium binding, and growth- and neurite-promoting activities.


Pssm-ID: 143220  Cd Length: 78  Bit Score: 40.17  E-value: 1.05e-04
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRkdgLDIQLPGDDPHISVQFRGGpqrfevTGWLQIQAVRPSDEGTYRCLGRNALGQV 262
Cdd:cd05743   1 GETVEFTCVATGVPTPIINWR---LNWGHVPDSARVSITSEGG------YGTLTIRDVKESDQGAYTCEAINTRGMV 68
Ig4_L1-NrCAM_like cd04978
Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), ...
185-271 1.08e-04

Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related); The members here are composed of the fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related). These proteins belong to the L1 subfamily of cell adhesion molecules (CAMs) and are comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. These molecules are primarily expressed in the nervous system. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth.


Pssm-ID: 409367 [Multi-domain]  Cd Length: 89  Bit Score: 40.51  E-value: 1.08e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 185 TGQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVqfRGGPQRFEvtgwlqiqAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd04978  13 PGETGELICEAEGNPQPTITWRLNGVPIEPAPEDMRRTV--DGRTLIFS--------NLQPNDTAVYQCNASNVHGYLLA 82

                ....*..
gi 68565605 265 PASLTVL 271
Cdd:cd04978  83 NAFLHVL 89
IgI_2_RPTP_IIa_LAR_like cd05738
Second immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F; ...
193-270 1.10e-04

Second immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain found in the receptor protein tyrosine phosphatase (RPTP)-F, also known as LAR. LAR belongs to the RPTP type IIa subfamily. Members of this subfamily are cell adhesion molecule-like proteins involved in central nervous system (CNS) development. They have large extracellular portions comprised of multiple Ig-like domains and two to nine fibronectin type III (FNIII) domains and a cytoplasmic portion having two tandem phosphatase domains.


Pssm-ID: 409400 [Multi-domain]  Cd Length: 91  Bit Score: 40.38  E-value: 1.10e-04
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 68565605 193 CEVFAYPMASIEWRKDGLDIQLPGDDPHISvQFRggpqrfevTGWLQIQAVRPSDEGTYRCLGRNALG-QVEAPASLTV 270
Cdd:cd05738  21 CAASGNPDPEISWFKDFLPVDTATSNGRIK-QLR--------SGALQIENSEESDQGKYECVATNSAGtRYSAPANLYV 90
IgI_L1-CAM_like cd05733
Immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM) and similar proteins; ...
188-260 1.14e-04

Immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM) and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains NrCAM [Ng(neuronglia)CAM-related cell adhesion molecule], which is primarily expressed in the nervous system, and human neurofascin. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lacks a C" strand.


Pssm-ID: 409396 [Multi-domain]  Cd Length: 94  Bit Score: 40.47  E-value: 1.14e-04
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 68565605 188 DVIFGCEVFAYPMASIEWRKDGLDIQlPGDDPHISVQFRGGpqrfevTGWLQIQAVRPSD-EGTYRCLGRNALG 260
Cdd:cd05733  18 NITIKCEAKGNPQPTFRWTKDGKFFD-PAKDPRVSMRRRSG------TLVIDNHNGGPEDyQGEYQCYASNELG 84
IgI_Perlecan_like cd05754
Immunoglobulin (Ig)-like domain found in Perlecan and similar proteins; member of the I-set of ...
236-268 1.75e-04

Immunoglobulin (Ig)-like domain found in Perlecan and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain found in Perlecan. Perlecan is a large multi-domain heparin sulfate proteoglycan, important in tissue development and organogenesis. Perlecan can be represented as 5 major portions; its fourth major portion (domain IV) is a tandem repeat of immunoglobulin-like domains (Ig2-Ig15) which can vary in size due to alternative splicing. Perlecan binds many cellular and extracellular ligands. Its domain IV region has many binding sites. Some of these have been mapped at the level of individual Ig-like domains, including a site restricted to the Ig5 domain for heparin/sulfatide, a site restricted to the Ig3 domain for nidogen-1 and nidogen-2, a site restricted to Ig4-5 for fibronectin, and sites restricted to Ig2 and to Ig13-15 for fibulin-2. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409412  Cd Length: 85  Bit Score: 39.46  E-value: 1.75e-04
                        10        20        30
                ....*....|....*....|....*....|...
gi 68565605 236 GWLQIQAVRPSDEGTYRCLGRNALGQVEAPASL 268
Cdd:cd05754  52 GILTIRNVQLSDAGTYVCTGSNMLDTDEATATL 84
IgI_3_FGFR2 cd05858
Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member ...
178-271 2.23e-04

Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain of human fibroblast growth factor receptor 2 (FGFR2). Fibroblast growth factors (FGFs) participate in morphogenesis, development, angiogenesis, and wound healing. These FGF-stimulated processes are mediated by four FGFR tyrosine kinases (FGRF1-4). FGFRs are comprised of an extracellular portion consisting of three Ig-like domains, a transmembrane helix, and a cytoplasmic portion having protein tyrosine kinase activity. The highly conserved Ig-like domains 2 and 3, and the linker region between D2 and D3 define a general binding site for FGFs. FGFR2 is required for male sex determination. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409444  Cd Length: 105  Bit Score: 39.94  E-value: 2.23e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 178 PYDTWNVTGQDVIFGCEVFAYPMASIEW----RKDGLDIQlPGDDPHISVQFRGG----PQRFEVtgwLQIQAVRPSDEG 249
Cdd:cd05858   8 PANTSVVVGTDAEFVCKVYSDAQPHIQWlkhvEKNGSKYG-PDGLPYVEVLKTAGvnttDKEIEV---LYLRNVTFEDAG 83
                        90       100
                ....*....|....*....|..
gi 68565605 250 TYRCLGRNALGQVEAPASLTVL 271
Cdd:cd05858  84 EYTCLAGNSIGISHHSAWLTVL 105
Ig_2 pfam13895
Immunoglobulin domain; This domain contains immunoglobulin-like domains.
172-270 2.58e-04

Immunoglobulin domain; This domain contains immunoglobulin-like domains.


Pssm-ID: 464026 [Multi-domain]  Cd Length: 79  Bit Score: 38.92  E-value: 2.58e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   172 PQIVSHPYDTWnvTGQDVIFGCEVFAYPMASIEWRKDGLDIQlPGDDPHISvqfrggpqrfevtgwlqiqAVRPSDEGTY 251
Cdd:pfam13895   2 PVLTPSPTVVT--EGEPVTLTCSAPGNPPPSYTWYKDGSAIS-SSPNFFTL-------------------SVSAEDSGTY 59
                          90       100
                  ....*....|....*....|
gi 68565605   252 RCLGRN-ALGQVEAPASLTV 270
Cdd:pfam13895  60 TCVARNgRGGKVSNPVELTV 79
IgI_3_FGFR cd04974
Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR); member of ...
177-269 2.86e-04

Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor (FGFR). Fibroblast growth factors (FGFs) participate in morphogenesis, development, angiogenesis, and wound healing. These FGF-stimulated processes are mediated by four FGFR tyrosine kinases (FGRF1-4). FGFRs are comprised of an extracellular portion consisting of three Ig-like domains, a transmembrane helix, and a cytoplasmic portion having protein tyrosine kinase activity. The highly conserved Ig-like domains 2 and 3, and the linker region between D2 and D3 define a general binding site for FGFs. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409363  Cd Length: 102  Bit Score: 39.33  E-value: 2.86e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 177 HPYDTWNVTGQDVIFGCEVFAYPMASIEWRK----DGlDIQLPGDDPHISVQFRGGPQRFEVTGWLQIQAVRPSDEGTYR 252
Cdd:cd04974   7 LPANQTVVLGSDVEFHCKVYSDAQPHIQWLKhvevNG-SKYGPDGLPYVTVLKVAGVNTTGEENTLTISNVTFDDAGEYI 85
                        90
                ....*....|....*..
gi 68565605 253 CLGRNALGQVEAPASLT 269
Cdd:cd04974  86 CLAGNSIGLSFHSAWLT 102
IgI_2_FGFR cd05857
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of ...
186-270 3.08e-04

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three IG-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans.


Pssm-ID: 409443 [Multi-domain]  Cd Length: 95  Bit Score: 39.07  E-value: 3.08e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLDIQLPGddphisvqfRGGPQRFEVTGW-LQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd05857  19 ANTVKFRCPAAGNPTPTMRWLKNGKEFKQEH---------RIGGYKVRNQHWsLIMESVVPSDKGNYTCVVENEYGSINH 89

                ....*.
gi 68565605 265 PASLTV 270
Cdd:cd05857  90 TYHLDV 95
Ig4_Contactin-2-like cd05728
Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The ...
178-270 4.10e-04

Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The members here are composed of the fourth Ig domain of the neural cell adhesion molecule contactin-2. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (also called TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. The first four Ig domains form the intermolecular binding fragment which arranges as a compact U-shaped module by contacts between Ig domains 1 and 4, and domains 2 and 3. It has been proposed that a linear zipper-like array forms, from contactin-2 molecules alternatively provided by the two apposed membranes.


Pssm-ID: 143205 [Multi-domain]  Cd Length: 85  Bit Score: 38.74  E-value: 4.10e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 178 PYDTWNVTGQDVIFGCEVFAYPMASIEWRKDGldiqlpgddphisvQFRGGPQRFEVT-GWLQIQAVRPSDEGTYRCLGR 256
Cdd:cd05728   6 ISDTEADIGSSLRWECKASGNPRPAYRWLKNG--------------QPLASENRIEVEaGDLRITKLSLSDSGMYQCVAE 71
                        90
                ....*....|....
gi 68565605 257 NALGQVEAPASLTV 270
Cdd:cd05728  72 NKHGTIYASAELAV 85
IgI_telokin-like cd20973
immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF ...
184-270 5.41e-04

immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin (Ig) domain in telokin, the C-terminal domain of myosin light chain kinase which is identical to telokin, and similar proteins. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the telokin Ig domain lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409565 [Multi-domain]  Cd Length: 88  Bit Score: 38.32  E-value: 5.41e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 184 VTGQDVIFGCEVFAYPMASIEWRKDGLDIQlpgDDPHISVQFRGgpqrfEVTGWLQIQAVRPSDEGTYRCLGRNALGQVE 263
Cdd:cd20973  10 VEGSAARFDCKVEGYPDPEVKWMKDDNPIV---ESRRFQIDQDE-----DGLCSLIISDVCGDDSGKYTCKAVNSLGEAT 81

                ....*..
gi 68565605 264 APASLTV 270
Cdd:cd20973  82 CSAELTV 88
Ig_Pro_neuregulin-1 cd05895
Immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1; The members here are composed of ...
186-270 8.40e-04

Immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1; The members here are composed of the immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1. There are many NRG-1 isoforms which arise from the alternative splicing of mRNA. NRG-1 belongs to the neuregulin gene family which is comprised of four genes. This group represents NRG-1. NRGs are signaling molecules which participate in cell-cell interactions in the nervous system, breast, and heart, and other organ systems, and are implicated in the pathology of diseases including schizophrenia, multiple sclerosis, and breast cancer. The NRG-1 protein binds to and activates the tyrosine kinases receptors ErbB3 and ErbB4, initiating signaling cascades. NRG-1 has multiple functions, for example, in the brain it regulates various processes such as radial glia formation and neuronal migration, dendritic development, and expression of neurotransmitters receptors in the peripheral nervous system NRG-1 regulates processes such as target cell differentiation, and Schwann cell survival.


Pssm-ID: 409476  Cd Length: 93  Bit Score: 38.05  E-value: 8.40e-04
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCE-VFAYPMASIEWRKDGLDIQLPGDDPHISVqfRGGPQRFEvtgwLQIQAVRPSDEGTYRCLGRNALGQVEA 264
Cdd:cd05895  14 GSKLVLRCEtSSEYPSLRFKWFKNGKEINRKNKPENIKI--QKKKKKSE----LRINKASLADSGEYMCKVSSKLGNDSA 87

                ....*.
gi 68565605 265 PASLTV 270
Cdd:cd05895  88 SANVTI 93
IgI_4_Dscam cd20956
Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
199-270 1.17e-03

Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409548 [Multi-domain]  Cd Length: 96  Bit Score: 37.54  E-value: 1.17e-03
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 68565605 199 PMASIEWRKDGLDIQlpgDDPHISV-QFRGgpQRFEVTGWLQIQAVRPSDEGTYRCLGRNALGQVEAPASLTV 270
Cdd:cd20956  29 PLPQITWTLDGFPIP---ESPRFRVgDYVT--SDGDVVSYVNISSVRVEDGGEYTCTATNDVGSVSHSARINV 96
Ig4_L1-CAM_like cd05867
Fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members ...
186-271 1.23e-03

Fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here are composed of the fourth immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region, and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM.


Pssm-ID: 409453 [Multi-domain]  Cd Length: 89  Bit Score: 37.18  E-value: 1.23e-03
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDDPHISVQfrggpqrfevTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:cd05867  14 GETARLDCQVEGIPTPNITWSINGAPIEGTDPDPRRHVS----------SGALILTDVQPSDTAVYQCEARNRHGNLLAN 83

                ....*.
gi 68565605 266 ASLTVL 271
Cdd:cd05867  84 AHVHVV 89
V-set pfam07686
Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 ...
178-271 1.26e-03

Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.


Pssm-ID: 462230  Cd Length: 109  Bit Score: 37.82  E-value: 1.26e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605   178 PYDTWNVTGQDVIFGCEVFAYPMA---SIEWRKDGLD--------IQLPGDDPHIS---VQFRGGPQRFEVTgwLQIQAV 243
Cdd:pfam07686   3 PREVTVALGGSVTLPCTYSSSMSEastSVYWYRQPPGkgptfliaYYSNGSEEGVKkgrFSGRGDPSNGDGS--LTIQNL 80
                          90       100
                  ....*....|....*....|....*....
gi 68565605   244 RPSDEGTYRCLGRNALGQVE-APASLTVL 271
Cdd:pfam07686  81 TLSDSGTYTCAVIPSGEGVFgKGTRLTVL 109
IgI_3_hemolin-like cd20977
Third immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
188-260 1.44e-03

Third immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The third Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules, including vascular (VCAM), intercellular (ICAM), neural (NCAM) and mucosal addressin (MADCAM) cell adhesion molecules, as well as junction adhesion molecules (JAM).


Pssm-ID: 409569  Cd Length: 93  Bit Score: 37.37  E-value: 1.44e-03
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 68565605 188 DVIFgCEVFAYPMASIEWRKDGLDIQLPGDDpHISVQFRGGPQRfevtgwLQIQAVRPSDEGTYRCLGRNALG 260
Cdd:cd20977  18 TMIY-CMYGSNPTAHPNYFKNGKDVNGNPED-RITRHNRTSGKR------LLFKTTLPEDEGVYTCEVDNGVG 82
IgI_2_FGFRL1-like cd05856
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ...
186-264 3.41e-03

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1(FGFRL1); member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 is comprised of a signal peptide, three extracellular Ig-like modules, a transmembrane segment, and a short intracellular domain. FGFRL1 is expressed preferentially in skeletal tissues. Similar to FGF receptors, the expressed protein interacts specifically with heparin and with FGF2. FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409442  Cd Length: 92  Bit Score: 35.99  E-value: 3.41e-03
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDG--LDIQLPGDdphisvqfrggPQRFEVTgwLQIQAVRPSDEGTYRCLGRNALGQVE 263
Cdd:cd05856  19 GSSVRLKCVASGNPRPDITWLKDNkpLTPPEIGE-----------NKKKKWT--LSLKNLKPEDSGKYTCHVSNRAGEIN 85

                .
gi 68565605 264 A 264
Cdd:cd05856  86 A 86
IgI_1_Palladin_C cd05893
First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ...
186-270 5.09e-03

First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of palladin. Palladin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to this family contain multiple Ig-like domains and function as scaffolds, modulating actin cytoskeleton. Palladin binds to alpha-actinin ezrin, vasodilator-stimulated phosphoprotein VASP, SPIN90 (also known as DIP or mDia interacting protein), and Src. Palladin also binds F-actin directly, via its Ig3 domain. Palladin is expressed as several alternatively spliced isoforms, having various combinations of Ig-like domains, in a cell-type-specific manner. It has been suggested that palladin's different Ig-like domains may be specialized for distinct functions. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409474  Cd Length: 92  Bit Score: 35.84  E-value: 5.09e-03
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68565605 186 GQDVIFGCEVFAYPMASIEWRKDGLDIQLPGDdpHISVQfrggpQRFEVTGWLQIQAVRPSDEGTYRCLGRNALGQVEAP 265
Cdd:cd05893  15 GMPVTFTCRVAGNPKPKIYWFKDGKQISPKSD--HYTIQ-----RDLDGTCSLHTTASTLDDDGNYTIMAANPQGRISCT 87

                ....*
gi 68565605 266 ASLTV 270
Cdd:cd05893  88 GRLMV 92
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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