Mucosal Addressin Cell Adhesion Molecule 1 (MADCAM1) Human Recombinant Protein

The protein encoded by this gene is an endothelial cell adhesion molecule that interacts preferentially with the leukocyte beta7 integrin LPAM-1 (alpha4beta7), L-selectin, and VLA-4 (alpha4beta1) on myeloid cells to direct leukocytes into mucosal and inflamed tissues. It is a member of the immunoglobulin family and is similar to ICAM1 and VCAM1. At least seven alternatively spliced transcripts encoding different protein isoforms have been found for this gene, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

MADCAM1: Cell adhesion leukocyte receptor expressed by mucosal venules, helps to direct lymphocyte traffic into mucosal tissues including the Peyer patches and the intestinal lamina propria. It can bind both integrin alpha-4/beta-7 and L-selectin, regulating both the passage and retention of leukocytes. Isoform 2, lacking the mucin-like domain, may be specialized in supporting integrin alpha-4/beta-7-dependent adhesion strengthening, independent of L- selectin binding. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 19p13.3

Cellular Component: integral to membrane; membrane; plasma membrane

Biological Process: aging; cell adhesion; cell-matrix adhesion; extracellular matrix organization and biogenesis; heterotypic cell-cell adhesion; immune response; integrin-mediated signaling pathway; keratinocyte differentiation; leukocyte tethering or rolling; positive regulation of leukocyte migration; receptor clustering; regulation of immune response; signal transduction