NameIntegrin beta-3
Synonyms
  • GP3A
  • GPIIIa
  • Platelet membrane glycoprotein IIIa
Gene NameITGB3
OrganismHuman
Amino acid sequence
>lcl|BSEQ0002297|Integrin beta-3
MRARPRPRPLWATVLALGALAGVGVGGPNICTTRGVSSCQQCLAVSPMCAWCSDEALPLG
SPRCDLKENLLKDNCAPESIEFPVSEARVLEDRPLSDKGSGDSSQVTQVSPQRIALRLRP
DDSKNFSIQVRQVEDYPVDIYYLMDLSYSMKDDLWSIQNLGTKLATQMRKLTSNLRIGFG
AFVDKPVSPYMYISPPEALENPCYDMKTTCLPMFGYKHVLTLTDQVTRFNEEVKKQSVSR
NRDAPEGGFDAIMQATVCDEKIGWRNDASHLLVFTTDAKTHIALDGRLAGIVQPNDGQCH
VGSDNHYSASTTMDYPSLGLMTEKLSQKNINLIFAVTENVVNLYQNYSELIPGTTVGVLS
MDSSNVLQLIVDAYGKIRSKVELEVRDLPEELSLSFNATCLNNEVIPGLKSCMGLKIGDT
VSFSIEAKVRGCPQEKEKSFTIKPVGFKDSLIVQVTFDCDCACQAQAEPNSHRCNNGNGT
FECGVCRCGPGWLGSQCECSEEDYRPSQQDECSPREGQPVCSQRGECLCGQCVCHSSDFG
KITGKYCECDDFSCVRYKGEMCSGHGQCSCGDCLCDSDWTGYYCNCTTRTDTCMSSNGLL
CSGRGKCECGSCVCIQPGSYGDTCEKCPTCPDACTFKKECVECKKFDRGALHDENTCNRY
CRDEIESVKELKDTGKDAVNCTYKNEDDCVVRFQYYEDSSGKSILYVVEEPECPKGPDIL
VVLLSVMGAILLIGLAALLIWKLLITIHDRKEFAKFEEERARAKWDTANNPLYKEATSTF
TNITYRGT
Number of residues788
Molecular Weight87056.975
Theoretical pI4.85
GO Classification
Functions
  • identical protein binding
  • protein disulfide isomerase activity
  • extracellular matrix binding
  • cell adhesion molecule binding
  • enzyme binding
  • virus receptor activity
  • vascular endothelial growth factor receptor 2 binding
  • fibronectin binding
  • platelet-derived growth factor receptor binding
  • protease binding
Processes
  • extracellular matrix organization
  • cell-substrate adhesion
  • leukocyte migration
  • activation of protein kinase activity
  • cell-matrix adhesion
  • positive regulation of endothelial cell proliferation
  • vascular endothelial growth factor receptor signaling pathway
  • viral entry into host cell
  • wound healing
  • positive regulation of vascular endothelial growth factor receptor signaling pathway
  • platelet degranulation
  • negative chemotaxis
  • protein folding
  • angiogenesis involved in wound healing
  • integrin-mediated signaling pathway
  • negative regulation of lipid storage
  • cell growth
  • platelet aggregation
  • negative regulation of lipid transport
  • apolipoprotein A-I-mediated signaling pathway
  • negative regulation of lipoprotein metabolic process
  • platelet activation
  • heterotypic cell-cell adhesion
  • negative regulation of macrophage derived foam cell differentiation
  • negative regulation of low-density lipoprotein particle receptor biosynthetic process
  • substrate adhesion-dependent cell spreading
  • cell-substrate junction assembly
  • axon guidance
  • mesodermal cell differentiation
  • positive regulation of endothelial cell migration
  • cell migration
  • regulation of bone resorption
  • positive regulation of peptidyl-tyrosine phosphorylation
  • cell adhesion
  • tube development
  • positive regulation of protein phosphorylation
  • blood coagulation
  • smooth muscle cell migration
Components
  • plasma membrane
  • lamellipodium membrane
  • filopodium membrane
  • ruffle membrane
  • integrin alphav-beta3 complex
  • receptor complex
  • integrin complex
  • platelet alpha granule membrane
  • cell surface
  • extracellular exosome
  • alphav-beta3 integrin-vitronectin complex
  • focal adhesion
  • microvillus membrane
  • melanosome
  • integral component of plasma membrane
  • nucleus
General FunctionVirus receptor activity
Specific FunctionIntegrin alpha-V/beta-3 (ITGAV:ITGB3) is a receptor for cytotactin, fibronectin, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin, vitronectin and von Willebrand factor. Integrin alpha-IIb/beta-3 (ITGA2B:ITGB3) is a receptor for fibronectin, fibrinogen, plasminogen, prothrombin, thrombospondin and vitronectin. Integrins alpha-IIb/beta-3 and alpha-V/beta-3 recognize the sequence R-G-D in a wide array of ligands. Integrin alpha-IIb/beta-3 recognizes the sequence H-H-L-G-G-G-A-K-Q-A-G-D-V in fibrinogen gamma chain. Following activation integrin alpha-IIb/beta-3 brings about platelet/platelet interaction through binding of soluble fibrinogen. This step leads to rapid platelet aggregation which physically plugs ruptured endothelial surface. Fibrinogen binding enhances SELP expression in activated platelets (By similarity).(Microbial infection) Integrin ITGAV:ITGB3 acts as a receptor for herpes virus 8/HHV-8 (PubMed:18045938). Integrin ITGAV:ITGB3 acts as a receptor for coxsackievirus A9 (PubMed:7519807). Acts as a receptor for Hantaan virus (PubMed:9618541). Integrin ITGAV:ITGB3 acts as a receptor for cytomegalovirus/HHV-5 (PubMed:15834425). Integrin ITGA5:ITGB3 acts as a receptor for human metapneumovirus (PubMed:24478423). Integrin ITGAV:ITGB3 acts aP05556s a receptor for human parechovirus 1 (PubMed:11160695). Integrin ITGAV:ITGB3 acts as a receptor for west nile virus (PubMed:23658209). In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions (PubMed:10397733).
Pfam Domain Function
Transmembrane Regions719-741
GenBank Protein ID306786
UniProtKB IDP05106
UniProtKB Entry NameITB3_HUMAN
Cellular LocationCell membrane
Gene sequence
>lcl|BSEQ0021847|Integrin beta-3 (ITGB3)
ATGCGAGCGCGGCCGCGGCCCCGGCCGCTCTGGGCGACTGTGCTGGCGCTGGGGGCGCTG
GCGGGCGTTGGCGTAGGAGGGCCCAACATCTGTACCACGCGAGGTGTGAGCTCCTGCCAG
CAGTGCCTGGCTGTGAGCCCCATGTGTGCCTGGTGCTCTGATGAGGCCCTGCCTCTGGGC
TCACCTCGCTGTGACCTGAAGGAGAATCTGCTGAAGGATAACTGTGCCCCAGAATCCATC
GAGTTCCCAGTGAGTGAGGCCCGAGTACTAGAGGACAGGCCCCTCAGCGACAAGGGCTCT
GGAGACAGCTCCCAGGTCACTCAAGTCAGTCCCCAGAGGATTGCACTCCGGCTCCGGCCA
GATGATTCGAAGAATTTCTCCATCCAAGTGCGGCAGGTGGAGGATTACCCTGTGGACATC
TACTACTTGATGGACCTGTCTTACTCCATGAAGGATGATCTGTGGAGCATCCAGAACCTG
GGTACCAAGCTGGCCACCCAGATGCGAAAGCTCACCAGTAACCTGCGGATTGGCTTCGGG
GCATTTGTGGACAAGCCTGTGTCACCATACATGTATATCTCCCCACCAGAGGCCCTCGAA
AACCCCTGCTATGATATGAAGACCACCTGCTTGCCCATGTTTGGCTACAAACACGTGCTG
ACGCTAACTGACCAGGTGACCCGCTTCAATGAGGAAGTGAAGAAGCAGAGTGTGTCACGG
AACCGAGATGCCCCAGAGGGTGGCTTTGATGCCATCATGCAGGCTACAGTCTGTGATGAA
AAGATTGGCTGGAGGAATGATGCATCCCACTTGCTGGTGTTTACCACTGATGCCAAGACT
CATATAGCATTGGACGGAAGGCTGGCAGGCATTGTCCAGCCTAATGACGGGCAGTGTCAT
GTTGGTAGTGACAATCATTACTCTGCCTCCACTACCATGGATTATCCCTCTTTGGGGCTG
ATGACTGAGAAGCTATCCCAGAAAAACATCAATTTGATCTTTGCAGTGACTGAAAATGTA
GTCAATCTCTATCAGAACTATAGTGAGCTCATCCCAGGGACCACAGTTGGGGTTCTGTCC
ATGGATTCCAGCAATGTCCTCCAGCTCATTGTTGATGCTTATGGGAAAATCCGTTCTAAA
GTAGAGCTGGAAGTGCGTGACCTCCCTGAAGAGTTGTCTCTATCCTTCAATGCCACCTGC
CTCAACAATGAGGTCATCCCTGGCCTCAAGTCTTGTATGGGACTCAAGATTGGAGACACG
GTGAGCTTCAGCATTGAGGCCAAGGTGCGAGGCTGTCCCCAGGAGAAGGAGAAGTCCTTT
ACCATAAAGCCCGTGGGCTTCAAGGACAGCCTGATCGTCCAGGTCACCTTTGATTGTGAC
TGTGCCTGCCAGGCCCAAGCTGAACCTAATAGCCATCGCTGCAACAATGGCAATGGGACC
TTTGAGTGTGGGGTATGCCGTTGTGGGCCTGGCTGGCTGGGATCCCAGTGTGAGTGCTCA
GAGGAGGACTATCGCCCTTCCCAGCAGGACGAATGCAGCCCCCGGGAGGGTCAGCCCGTC
TGCAGCCAGCGGGGCGAGTGCCTCTGTGGTCAATGTGTCTGCCACAGCAGTGACTTTGGC
AAGATCACGGGCAAGTACTGCGAGTGTGACGACTTCTCCTGTGTCCGCTACAAGGGGGAG
ATGTGCTCAGGCCATGGCCAGTGCAGCTGTGGGGACTGCCTGTGTGACTCCGACTGGACC
GGCTACTACTGCAACTGTACCACGCGTACTGACACCTGCATGTCCAGCAATGGGCTGCTG
TGCAGCGGCCGCGGCAAGTGTGAATGTGGCAGCTGTGTCTGTATCCAGCCGGGCTCCTAT
GGGGACACCTGTGAGAAGTGCCCCACCTGCCCAGATGCCTGCACCTTTAAGAAAGAATGT
GTGGAGTGTAAGAAGTTTGACCGGGGAGCCCTACATGACGAAAATACCTGCAACCGTTAC
TGCCGTGACGAGATTGAGTCAGTGAAAGAGCTTAAGGACACTGGCAAGGATGCAGTGAAT
TGTACCTATAAGAATGAGGATGACTGTGTCGTCAGATTCCAGTACTATGAAGATTCTAGT
GGAAAGTCCATCCTGTATGTGGTAGAAGAGCCAGAGTGTCCCAAGGGCCCTGACATCCTG
GTGGTCCTGCTCTCAGTGATGGGGGCCATTCTGCTCATTGGCCTTGCCGCCCTGCTCATC
TGGAAACTCCTCATCACCATCCACGACCGAAAAGAATTCGCTAAATTTGAGGAAGAACGC
GCCAGAGCAAAATGGGACACAGCCAACAACCCACTGTATAAAGAGGCCACGTCTACCTTC
ACCAATATCACGTACCGGGGCACTTAA
GenBank Gene IDJ02703
GeneCard IDNot Available
GenAtlas IDITGB3
HGNC IDHGNC:6156
Chromosome Location17
Locus17q21.32
References
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