Human Integrin alpha 3/CD49c Alexa Fluor® 750-conjugated Antibody

Applications

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Example

Flow Cytometry View Larger

Detection of Integrin alpha 3/CD49c in HT1080 Human Cell Line by Flow Cytometry. HT1080 human fibrosarcoma cell line was stained with Mouse Anti-Human Integrin alpha 3/CD49c Alexa Fluor® 750-conjugated Monoclonal Antibody (Catalog # FAB1345S, filled histogram) or isotype control antibody (Catalog # IC002S, open histogram). View our protocol for Staining Membrane-associated Proteins.

Preparation and Storage

Background: Integrin alpha 3/CD49c

VLA-3 (Very Late Antigen 3) is a member of the integrin family, beta 1 subfamily, of cell membrane adhesion molecules (1-3). Integrins are nondisulfide-linked transmembrane (TM) heterodimers that contain an alpha - and beta -subunit (1). VLA-3 is composed of an alpha 3 and beta 1 subunit. The alpha 3/CD49c subunit is a 130-150 kDa type I TM glycoprotein. It only associates with the beta 1 integrin subunit. It is synthesized as a 1051 amino acid (aa) precursor that undergoes proteolytic cleavage to generate a disulfide-linked 110 kDa, 843 aa extracellular heavy chain and a 30 kDa, 176 aa TM/cytoplasmic light chain (1, 4, 5, 6). The heavy chain contains seven 60 aa repeats that fold into a propeller-like structure (7). Sequences involving the first three repeats are associated with ligand binding (1). The light chain has two cytoplasmic alternate splice forms. The A form cytoplasmic domain is 52 aa, while the B form cytoplasmic domain is 37 aa (5). Human alpha 3 heavy chain is 88% aa identical to mouse heavy chain. VLA-3 is known to bind fibronectin, collagen, and laminin-1, 5, 8, 10 and 11 (1). It also binds tetraspanins such as CD9, CD63 and CD151. CD151 binding may actually stabilize VLA-3, enabling it to bind to additional factors (8).

Product Datasheets

Related Research Areas

• Actin Stress Fibers and Focal Adhesions During EMT
• Adhesion Molecules
• Adhesion Molecules in Angiogenesis
• Epithelial Cell Polarity
• Integrins and Associated Molecules