The alpha-V (ITGAV) integrins are receptors for vitronectin, cytotactin, fibronectin, fibrinogen, laminin, matrix metalloproteinase-2, osteopontin, osteomodulin, prothrombin, thrombospondin, TGFB1 and vWF. They recognize the sequence R-G-D in a wide array of ligands. Alpha-V integrins may play a role in embryo implantation, angiogenesis and wound healing (By similarity). ITGAV:ITGB3 binds to fractalkine (CX3CL1) and may act as its coreceptor in CX3CR1-dependent fractalkine signaling. ITGAV:ITGB3 binds to NRG1 (via EGF domain) and this binding is essential for NRG1-ERBB signaling. ITGAV:ITGB3 binds to FGF1 and this binding is essential for FGF1 signaling. ITGAV:ITGB3 binds to FGF2 and this binding is essential for FGF2 signaling. ITGAV:ITGB3 binds to IGF1 and this binding is essential for IGF1 signaling. ITGAV:ITGB3 binds to IGF2 and this binding is essential for IGF2 signaling. ITGAV:ITGB3 binds to IL1B and this binding is essential for IL1B signaling. ITGAV:ITGB3 binds to PLA2G2A via a site (site 2) which is distinct from the classical ligand-binding site (site 1) and this induces integrin conformational changes and enhanced ligand binding to site 1. ITGAV:ITGB3 and ITGAV:ITGB6 act as receptors for fibrillin-1 (FBN1) and mediate R-G-D-dependent cell adhesion to FBN1 (By similarity). Integrin alpha-V/beta-6 or alpha-V/beta-8 (ITGAV:ITGB6 or ITGAV:ITGB8) mediates R-G-D-dependent release of transforming growth factor beta-1 (TGF-beta-1) from regulatory Latency-associated peptide (LAP), thereby playing a key role in TGF-beta-1 activation (By similarity). ITGAV:ITGB3 acts as a receptor for CD40LG (By similarity). Heterodimer of an alpha and a beta subunit. The alpha subunit is composed of a heavy and a light chain linked by a disulfide bond. Alpha-V (ITGAV) associates with either beta-1 (ITGB1), beta-3 (ITGB3), beta-5 (ITGB5), beta-6 (ITGB6) or beta-8 (ITGB8) (By similarity). Interacts with RAB25. Interacts with CIB1 (By similarity). Integrins ITGAV:ITGB3 and ITGAV:ITGB5 interact with FBLN5 (via N-terminus) (By similarity). ITGAV:ITGB3 and ITGAV:ITGB5 interact with CCN3 (By similarity). ITGAV:ITGB3 interacts with ADGRA2 (By similarity). ITGAV:ITGB3 interacts with FGF2; it is likely that FGF2 can simultaneously bind ITGAV:ITGB3 and FGF receptors (By similarity). ITGAV:ITGB3 is found in a ternary complex with CX3CR1 and CX3CL1. ITGAV:ITGB3 is found in a ternary complex with NRG1 and ERBB3. ITGAV:ITGB3 is found in a ternary complex with FGF1 and FGFR1. ITGAV:ITGB3 is found in a ternary complex with IGF1 and IGF1R (By similarity). ITGAV:ITGB3 interacts with IGF2 (By similarity). ITGAV:ITGB3 and ITGAV:ITGB6 interact with FBN1 (By similarity). ITGAV:ITGB3 interacts with CD9, CD81 and CD151 (via second extracellular domain) (By similarity). ITGAV:ITGB6 interacts with TGFB1 (By similarity). Belongs to the integrin alpha chain family.