Eph Receptor A1 (EPHA1) Antibody – Rabbit Polyclonal

This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene is expressed in some human cancer cell lines and has been implicated in carcinogenesis. [provided by RefSeq, Jul 2008]

EphA1: a receptor tyrosine kinase. Receptor for members of the ephrin-A family. Binds with a low affinity to ephrin-A1. The 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. Misexpressed in several cancers, including upregulation in head and neck cancer, and downregulation in invasive breast cancer cell lines and glioblastoma

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

Chromosomal Location of Human Ortholog: 7q34

Cellular Component: integral to plasma membrane; plasma membrane

Molecular Function: transmembrane-ephrin receptor activity; protein kinase binding; ATP binding; protein kinase activity

Biological Process: axon guidance; positive regulation of angiogenesis; peptidyl-tyrosine phosphorylation; cell surface receptor linked signal transduction; somatic stem cell maintenance; protein amino acid autophosphorylation; positive regulation of stress fiber formation; positive regulation of cell proliferation; ephrin receptor signaling pathway; negative regulation of protein kinase activity; angiogenesis; positive regulation of cell-matrix adhesion; negative regulation of cell migration; positive regulation of cell migration