Integrin Beta 3 (ITGB3) Antibody – Mouse Monoclonal

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

Chromosomal Location of Human Ortholog: 17q21.32

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

Molecular Function: C-X3-C chemokine binding; cell adhesion molecule binding; coreceptor activity; enzyme binding; extracellular matrix binding; fibroblast growth factor binding; fibronectin binding; identical protein binding; insulin-like growth factor I binding; platelet-derived growth factor receptor binding; protease binding; protein binding; protein disulfide isomerase activity; vascular endothelial growth factor receptor 2 binding

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

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