EPHA4 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. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2015]

EphA4: a tyrosine kinase receptor of the Eph family. Receptor for members of the ephrin-A family. Binds to ephrin-A1, -A4 and -A5. Binds more poorly to ephrin-A2 and -A3. May play a role in hindbrain pattern formation. 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.

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

Chromosomal Location of Human Ortholog: 2q36.1

Cellular Component: Golgi apparatus; cell surface; endoplasmic reticulum; integral to plasma membrane; dendrite; postsynaptic density; dendritic spine; perikaryon; postsynaptic membrane; mitochondrial outer membrane; early endosome membrane; axon; cytoplasm; plasma membrane; nerve terminal; neuromuscular junction; cell junction; filopodium

Molecular Function: identical protein binding; protein binding; ephrin receptor binding; transmembrane-ephrin receptor activity; GPI-linked ephrin receptor activity; PH domain binding; ATP binding; protein kinase activity

Biological Process: axon guidance; positive regulation of JNK activity; peptidyl-tyrosine phosphorylation; negative regulation of axon regeneration; protein amino acid autophosphorylation; motor axon guidance; regulation of astrocyte differentiation; positive regulation of dendrite morphogenesis; glial cell migration; regulation of axonogenesis; adult walking behavior; ephrin receptor signaling pathway; corticospinal tract morphogenesis; cell adhesion