Integrin, Beta 3 (Platelet Glycoprotein Iiia, Antigen CD61) (ITGB3) ELISA Kit for Human

The ITGB3 protein product is the integrin beta chain beta 3. Integrins are integral cell-surface proteins composed of an alpha chain and a beta chain. A given chain may combine with multiple partners resulting in different integrins. Integrin beta 3 is found along with the alpha IIb chain in platelets. Integrins are known to participate in cell adhesion as well as cell-surface mediated signalling. [provided by RefSeq, Jul 2008]

ITGB3: integrin alpha-V/beta-3 is a receptor for cytotactin, fibronectin, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin, vitronectin and von Willebrand factor. Integrin alpha-IIB/beta-3 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.

Protein type: Membrane protein, integral; Motility/polarity/chemotaxis; Cell adhesion

Chromosomal Location of Human Ortholog: 17q21.32

Cellular Component: filopodium membrane; platelet alpha granule membrane; focal adhesion; cell surface; integral to plasma membrane; microvillus membrane; plasma membrane; melanosome; nucleus; integrin complex; receptor complex

Molecular Function: identical protein binding; protein binding; protease binding; extracellular matrix binding; vascular endothelial growth factor receptor 2 binding; fibronectin binding; platelet-derived growth factor receptor binding; protein disulfide isomerase activity; cell adhesion molecule binding; receptor activity

Biological Process: negative regulation of lipid transport; axon guidance; extracellular matrix organization and biogenesis; entry of virus into host cell; protein folding; wound healing; cell-matrix adhesion; smooth muscle cell migration; negative chemotaxis; mesodermal cell differentiation; positive regulation of vascular endothelial growth factor receptor signaling pathway; platelet degranulation; cell-substrate junction assembly; cell growth; cell adhesion; integrin-mediated signaling pathway; platelet activation; cell migration; regulation of bone resorption; negative regulation of lipoprotein metabolic process; angiogenesis involved in wound healing; cell-substrate adhesion; heterotypic cell-cell adhesion; positive regulation of peptidyl-tyrosine phosphorylation; negative regulation of low-density lipoprotein receptor biosynthetic process; activation of protein kinase activity; positive regulation of endothelial cell proliferation; positive regulation of protein amino acid phosphorylation; blood coagulation; vascular endothelial growth factor receptor signaling pathway; tube development; leukocyte migration

Disease: Glanzmann Thrombasthenia; Myocardial Infarction, Susceptibility To; Bleeding Disorder, Platelet-type, 16