integrin subunit alpha V(ITGAV) Homo sapiens The product of this gene belongs to the integrin alpha chain family. Integrins are heterodimeric integral membrane proteins composed of an alpha subunit and a beta subunit that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha V subunit. This subunit associates with beta 1, beta 3, beta 5, beta 6 and beta 8 subunits. The heterodimer consisting of alpha V and beta 3 subunits is also known as the vitronectin receptor. This integrin may regulate angiogenesis and cancer progression. Alternative splicing results in multiple transcript variants. Note that the integrin alpha 5 and integrin alpha V subunits are encoded by distinct genes. [provided by RefSeq, Oct 2015],
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Function:
Function:The alpha-V integrins are receptors for vitronectin, cytotactin, fibronectin, fibrinogen, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin and vWF. They recognize the sequence R-G-D in a wide array of ligands. In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions.,similarity:Belongs to the integrin alpha chain family.,similarity:Contains 7 FG-GAP repeats.,subunit:Heterodimer of an alpha and a beta subunit. The alpha subunit is composed of an heavy and a light chain linked by a disulfide bond. Alpha-V associates with either beta-1, beta-3, beta-5, beta-6 or beta-8 subunit. Interacts with HIV-1 Tat. Alpha-V/beta-6 binds to foot-and-mouth disease virus (FMDV) VP1 protein and acts as a receptor for this virus (By similarity). Alpha-V/beta-6 binds to coxsackievirus A9 and coxsackievirus B1 capsid proteins and acts as a receptor for these viruses.,
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Cellular Localization:
Cell membrane; Single-pass type I membrane protein. Cell junction, focal adhesion .
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Research Areas:
>>Phagosome ;
>>PI3K-Akt signaling pathway ;
>>Focal adhesion ;
>>ECM-receptor interaction ;
>>Cell adhesion molecules ;
>>Regulation of actin cytoskeleton ;
>>Thyroid hormone signaling pathway ;
>>Human cytomegalovirus infection ;
>>Human papillomavirus infection ;
>>Pathways in cancer ;
>>Proteoglycans in cancer ;
>>Small cell lung cancer ;
>>Hypertrophic cardiomyopathy ;
>>Arrhythmogenic right ventricular cardiomyopathy ;
>>Dilated cardiomyopathy ;
>>Fluid shear stress and atherosclerosis