Cd49c Mouse, Unlabeled, Clone: 42, Bd, Mouse Monoclonal Antibody, Each

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Integrins are a family of dimeric proteins that mediate cell-to-cell and extracellular matrix adhesion. They consist of a large α chain that is non-covalently associated with a smaller β chain which defines the integrin subfamilies. Vla-3 (very late antigen-3), a member of the integrin superfamily, exhibits elevated expression on b lymphocytes, but is also found on monocytes, platelets, and hematopoietic progenitor cells. A heterodimer of α3 (cd49c) and β1 (cd29) subunits, vla is a receptor for laminin, fibronectin, and collagen. The α3 chain contains a large extracellular domain with three putative metal-binding sequences, a transmembrane domain, and a short cytoplasmic tail. Differing requirements for divalent cations and the influence of rgd peptides results in multiple ligand-binding mechanisms for vla-3. Although its expression is restricted in normal tissues, vla-3 is found on a variety of cultured tumor cells. In addition, levels of vla-3 have been shown to correlate with the degree of invasiveness of malignant melanoma cells. Thus, vla-3 mediates intercellular adhesion and cell migration in normal and, possibly, cancerous cell types.Immunofluorescence, western blotting