Integrin Alpha 6/ITGA6 (ITGA6) Antibody – Rabbit Polyclonal

The gene encodes a member of the integrin alpha chain family of proteins. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha 6 subunit. This subunit may associate with a beta 1 or beta 4 subunit to form an integrin that interacts with extracellular matrix proteins including members of the laminin family. The alpha 6 beta 4 integrin may promote tumorigenesis, while the alpha 6 beta 1 integrin may negatively regulate erbB2/HER2 signaling. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]

ITGA6: Integrin alpha-6/beta-1 is a receptor for laminin on platelets. Integrin alpha-6/beta-4 is a receptor for laminin in epithelial cells and it plays a critical structural role in the hemidesmosome. Heterodimer of an alpha and a beta subunit. The alpha subunit is composed of an heavy and a light chain linked by a disulfide bond. Alpha-6 associates with either beta-1 or beta-4. Interacts with HPS5. Interacts with RAB21. Integrin alpha-6/beta-4 is predominantly expressed by epithelia. Isoforms containing segment X1 are ubiquitously expressed. Isoforms containing segment X1X2 are expressed in heart, kidney, placenta, colon, duodenum, myoblasts and myotubes, and in a limited number of cell lines; they are always coexpressed with the ubiquitous isoform containing segment X1. In some tissues (e.g. Salivary gland), isoforms containing cytoplasmic segment A and isoforms containing segment B are detected while in others, only isoforms containing one cytoplasmic segment are found (segment A in epidermis and segment B in kidney). Belongs to the integrin alpha chain family. 8 isoforms of the human protein are produced by alternative splicing.

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

Chromosomal Location of Human Ortholog: 2q31.1

Cellular Component: cell surface; cell-cell adherens junction; focal adhesion; hemidesmosome; plasma membrane; basal plasma membrane; basement membrane; filopodium; external side of plasma membrane

Molecular Function: integrin binding; protein binding; metal ion binding; laminin binding

Biological Process: integrin-mediated signaling pathway; skin development; extracellular matrix organization and biogenesis; filopodium formation; positive regulation of apoptosis; cell-matrix adhesion; cell-substrate adhesion; cell-cell adhesion; hemidesmosome assembly; gut development; cellular response to extracellular stimulus; brown fat cell differentiation; positive regulation of cell-cell adhesion; cell-substrate junction assembly; cell adhesion mediated by integrin; positive regulation of transcription from RNA polymerase II promoter; blood coagulation; leukocyte migration; positive regulation of phosphorylation

Disease: Epidermolysis Bullosa Junctionalis With Pyloric Atresia