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. Note: This description may include information from UniProtKB.
Protein type: EC 2.7.10.1; Membrane protein, integral; Protein kinase, tyrosine (receptor); Protein kinase, TK; Kinase, protein; TK group; Eph family
Cellular Component: integral to plasma membrane; early endosome; extracellular region
Molecular Function: protein binding; GPI-linked ephrin receptor activity; ATP binding
Biological Process: cell migration; regulation of Rho GTPase activity; apoptosis; regulation of actin cytoskeleton organization and biogenesis; response to cytokine stimulus; regulation of focal adhesion formation; ephrin receptor signaling pathway; response to lipopolysaccharide; fever; cell adhesion
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.
