Receptor (EPHA3) Antibody – Mouse Monoclonal

EphA3: a receptor tyrosine kinase of the Eph family. Receptor for members of the ephrin-A family: binds to ephrin-A2, -A3, -A4 and -A5The Eph receptor tyrosine kinase family, the largest in the tyrosine kinase group, has fourteen members. They bind membrane-anchored ligands, ephrins, at sites of cell-cell contact, regulating the repulsion and adhesion of cells that underlie the establishment, maintenance, and remodeling of patterns of cellular organization. Eph signals are particularly important in regulating cell adhesion and cell migration during development, axon guidance, homeostasis and disease. EphA receptors bind to GPI-anchored ephrin-A ligands, while EphB receptors bind to ephrin-B proteins that have a transmembrane and cytoplasmic domain. Interactions between EphB receptor kinases and ephrin-B proteins transduce signals bidirectionally, signaling to both interacting cell types. Eph receptors and ephrins also regulate the adhesion of endothelial cells and are required for the remodeling of blood vessels. Two point mutations seen in a survey of colorectal tumors. Soluble receptors reduce tumor growth and angiogenesis in mouse models. Two alternatively spliced isoforms of EphA3 have been described.

Protein type: Kinase, protein; Protein kinase, TK; Membrane protein, integral; Protein kinase, tyrosine (receptor); EC 2.7.10.1; TK group; Eph family

Cellular Component: membrane; integral to plasma membrane; early endosome; extracellular region; plasma membrane; integral to membrane

Molecular Function: transferase activity; GPI-linked ephrin receptor activity; protein-tyrosine kinase activity; ephrin receptor activity; transferase activity, transferring phosphorus-containing groups; nucleotide binding; kinase activity; transmembrane receptor protein tyrosine kinase activity; ATP binding; protein kinase activity

Biological Process: cell migration; peptidyl-tyrosine phosphorylation; regulation of actin cytoskeleton organization and biogenesis; regulation of focal adhesion formation; ephrin receptor signaling pathway; motor axon guidance; protein amino acid phosphorylation; phosphorylation; transmembrane receptor protein tyrosine kinase signaling pathway