Anti-Integrin beta-8 Antibody, clone 6B9 clone 6B9, from mouse

Integrin beta-8 (UniProt: P26012) is encoded by the ITGB8 gene (Gene ID: 3696) in human. Integrin complexes mediate cell-cell and cell-extracellular matrix interactions and this complex plays a role in human airway epithelial proliferation. The integrin receptors are composed of alpha and beta subunits and each subunit crosses the membrane once, with most of the polypeptide residing in the extracellular space, and has two short cytoplasmic domains. Integrin beta-8 is a single-pass type I membrane protein that associates with alpha V chain in a non-covalent manner to make a heterodimer that serves as a receptor for vitronectin, fibrin, and the latency associated peptide (LAP). Integrin beta-8 binding to LAP is reported to promote the proteolytic release of active TGF-beta from LAP. Integrin beta-8 contains a VWFA domain and four cysteine-rich repeats. It is required for vascular morphogenesis in the embryonic brain and yolk sac. Higher expression of integrin beta-8 is observed in placenta, kidney, brain, ovary, uterus, and in several transformed cells. It is transiently expressed in 293 human embryonic kidney cells. Higher expression of ITGB8 is linked to high angiogenic and poorly invasive glioblastoma tumors. Conversely, low expression of ITGB8 correlates with highly invasive, but low angiogenic tumors. Higher expression of integrin beta-8 is observed in placenta, kidney, brain, ovary, uterus, and in several transformed cells. It is transiently expressed in 293 human embryonic kidney cells.