ITGA2B

Integrin, alpha 2b (platelet glycoprotein IIb of IIb/IIIa complex, antigen CD41)
PDB rendering based on 1txv.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 1DPK​, 1DPQ​, 1JX5​, 1KUP​, 1KUZ​, 1M8O​, 1RN0​, 1S4W​, 1TYE​, 1UV9​, 2K1A​, 2K9J​, 2KNC​, 2MTP​, 2VC2​, 2VDK​, 2VDL​, 2VDM​, 2VDN​, 2VDO​, 2VDP​, 2VDQ​, 2VDR​, 3FCS​, 3FCU​, 3NID​, 3NIF​, 3NIG​, 3T3M​, 3T3P​, 3ZDX​, 3ZDY​, 3ZDZ​, 3ZE0​, 3ZE1​, 3ZE2​, 4CAK​
Identifiers
Symbols	ITGA2B ; BDPLT16; BDPLT2; CD41; CD41B; GP2B; GPIIb; GT; GTA; HPA3; PPP1R93
External IDs	OMIM: 607759 MGI: 96601 HomoloGene: 37304 ChEMBL: 212 GeneCards: ITGA2B Gene
Gene ontology Molecular function • protein binding • identical protein binding • metal ion binding • extracellular matrix binding • fibrinogen binding Cellular component • plasma membrane • integral component of plasma membrane • focal adhesion • integrin complex • external side of plasma membrane • cell surface • platelet alpha granule membrane • extracellular exosome • blood microparticle Biological process • platelet degranulation • positive regulation of leukocyte migration • cell adhesion • cell-matrix adhesion • integrin-mediated signaling pathway • axon guidance • blood coagulation • platelet activation • extracellular matrix organization • platelet aggregation Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	3674	16399
Ensembl	ENSG00000005961	ENSMUSG00000034664
UniProt	P08514	Q9QUM0
RefSeq (mRNA)	NM_000419	NM_010575
RefSeq (protein)	NP_000410	NP_034705
Location (UCSC)	Chr 17: 44.37 – 44.39 Mb	Chr 11: 102.45 – 102.47 Mb
PubMed search

Integrin alpha-IIb is a protein that in humans is encoded by the ITGA2B gene.

ITGA2B, also known as CD41, encodes integrin alpha chain 2b. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. Alpha chain 2b undergoes post-translational cleavage to yield disulfide-linked light and heavy chains that join with beta 3 to form a fibrinogen receptor expressed in platelets that plays a crucial role in coagulation. Mutations that interfere with this role result in thrombasthenia. In addition to adhesion, integrins are known to participate in cell-surface mediated signalling.^[1]

Interactions

ITGA2B has been shown to interact with AUP1^[2] and CLNS1A.^[3]

See also

• Cluster of differentiation
• Glycoprotein IIb/IIIa

References

1. "Entrez Gene: ITGA2B integrin, alpha 2b (platelet glycoprotein IIb of IIb/IIIa complex, antigen CD41)".
2. Kato, Atsushi; Kawamata Norihiko; Tamayose Kenji; Egashira Motoki; Miura Rika; Fujimura Tsutomu; Murayama Kimie; Oshimi Kazuo (Aug 2002). "Ancient ubiquitous protein 1 binds to the conserved membrane-proximal sequence of the cytoplasmic tail of the integrin alpha subunits that plays a crucial role in the inside-out signaling of alpha IIbbeta 3". J. Biol. Chem. (United States) 277 (32): 28934–41. doi:10.1074/jbc.M204340200. ISSN 0021-9258. PMID 12042322.
3. Larkin, Deirdre; Murphy Derek; Reilly Dermot F; Cahill Martha; Sattler Ellen; Harriott Pat; Cahill Dolores J; Moran Niamh (Jun 2004). "ICln, a novel integrin alphaIIbbeta3-associated protein, functionally regulates platelet activation". J. Biol. Chem. (United States) 279 (26): 27286–93. doi:10.1074/jbc.M402159200. ISSN 0021-9258. PMID 15075326.

Further reading

• Bray PF (1995). "Inherited diseases of platelet glycoproteins: considerations for rapid molecular characterization.". Thromb. Haemost. 72 (4): 492–502. PMID 7878622.
• Naik UP, Parise LV (1997). "Structure and function of platelet alpha IIb beta 3.". Curr. Opin. Hematol. 4 (5): 317–22. PMID 9288464.
• Porter JC, Hogg N (1999). "Integrins take partners: cross-talk between integrins and other membrane receptors.". Trends Cell Biol. 8 (10): 390–6. doi:10.1016/S0962-8924(98)01344-0. PMID 9789327.
• Lincoff AM (1998). "Trials of platelet glycoprotein IIb/IIIa receptor antagonists during percutaneous coronary revascularization.". Am. J. Cardiol. 82 (8B): 36P–42P. doi:10.1016/S0002-9149(98)00662-6. PMID 9809890.
• Bennett JS (2001). "Platelet-fibrinogen interactions.". Ann. N. Y. Acad. Sci. 936: 340–54. doi:10.1111/j.1749-6632.2001.tb03521.x. PMID 11460491.
• Plow EF, Cierniewski CS, Xiao Z, et al. (2002). "AlphaIIbbeta3 and its antagonism at the new millennium.". Thromb. Haemost. 86 (1): 34–40. PMID 11487023.
• Quinn MJ, Byzova TV, Qin J, et al. (2004). "Integrin alphaIIbbeta3 and its antagonism.". Arterioscler. Thromb. Vasc. Biol. 23 (6): 945–52. doi:10.1161/01.ATV.0000066686.46338.F1. PMID 12637342.
• Fullard JF (2004). "The role of the platelet glycoprotein IIb/IIIa in thrombosis and haemostasis.". Curr. Pharm. Des. 10 (14): 1567–76. doi:10.2174/1381612043384682. PMID 15134555.
• Watson SP, Auger JM, McCarty OJ, Pearce AC (2005). "GPVI and integrin alphaIIb beta3 signaling in platelets.". J. Thromb. Haemost. 3 (8): 1752–62. doi:10.1111/j.1538-7836.2005.01429.x. PMID 16102042.
• Bennett JS (2006). "Structure and function of the platelet integrin alphaIIbbeta3.". J. Clin. Invest. 115 (12): 3363–9. doi:10.1172/JCI26989. PMC 1297263. PMID 16322781.
• Ma YQ, Qin J, Plow EF (2007). "Platelet integrin alpha(IIb)beta(3): activation mechanisms.". J. Thromb. Haemost. 5 (7): 1345–52. doi:10.1111/j.1538-7836.2007.02537.x. PMID 17635696.

External links

• CD41 Antigen at the US National Library of Medicine Medical Subject Headings (MeSH)