Integrin Alpha 4 (ITGA4) Antibody – Rabbit Polyclonal

The product of this gene belongs to the integrin alpha chain family of proteins. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This gene encodes an alpha 4 chain. Unlike other integrin alpha chains, alpha 4 neither contains an I-domain, nor undergoes disulfide-linked cleavage. Alpha 4 chain associates with either beta 1 chain or beta 7 chain. [provided by RefSeq, Jul 2008]

ITGA4: Integrins alpha-4/beta-1 (VLA-4) and alpha-4/beta-7 are receptors for fibronectin. They recognize one or more domains within the alternatively spliced CS-1 and CS-5 regions of fibronectin. They are also receptors for VCAM1. Integrin alpha- 4/beta-1 recognizes the sequence Q-I-D-S in VCAM1. Integrin alpha- 4/beta-7 is also a receptor for MADCAM1. It recognizes the sequence L-D-T in MADCAM1. On activated endothelial cells integrin VLA-4 triggers homotypic aggregation for most VLA-4-positive leukocyte cell lines. It may also participate in cytolytic T-cell interactions with target cells. Heterodimer of an alpha and a beta subunit. The alpha subunit can sometimes be cleaved into two non-covalently associated fragments. Alpha-4 associates with either beta-1 or beta-7. Alpha-4 interacts with PXN, LPXN, and TGFB1I1/HIC5. Interacts with CSPG4 through CSPG4 chondroitin sulfate glycosaminoglycan. Belongs to the integrin alpha chain family.

Protein type: Membrane protein, integral; Motility/polarity/chemotaxis; Receptor, misc.; Cell adhesion

Chromosomal Location of Human Ortholog: 2q31.3

Cellular Component: focal adhesion; cell surface; membrane; plasma membrane; intercellular junction; external side of plasma membrane

Molecular Function: protein binding; metal ion binding; fibronectin binding; cell adhesion molecule binding

Biological Process: integrin-mediated signaling pathway; regulation of immune response; extracellular matrix organization and biogenesis; cell-matrix adhesion; heart development; receptor clustering; heterophilic cell adhesion; heterotypic cell-cell adhesion; leukocyte adhesion; B cell differentiation; blood vessel remodeling; leukocyte tethering or rolling; blood coagulation; leukocyte migration