EphB3: a ubiquitous receptor tyrosine kinase of the Eph family. A receptor for ephrin-B family members: ephrin-B1 and -B2. 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.EphB3 contains 1 sterile alpha motif (SAM) domain and 2 fibronectin type III domains.
Protein type: EC 2.7.10.1; Eph family; Kinase, protein; Membrane protein, integral; Protein kinase, TK; Protein kinase, tyrosine (receptor); TK group
Chromosomal Location of Human Ortholog: 3q27.1
Cellular Component: cytosol; extracellular region; integral to plasma membrane; plasma membrane
Molecular Function: ephrin receptor activity
Biological Process: angiogenesis; axon guidance; axonal fasciculation; cell migration; corpus callosum development; digestive tract morphogenesis; ephrin receptor signaling pathway; palate development; positive regulation of synaptogenesis; protein amino acid autophosphorylation; regulation of axonogenesis; regulation of cell-cell adhesion; regulation of GTPase activity; thymus development; urogenital system development
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