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: Kinase, protein; Protein kinase, TK; Membrane protein, integral; Protein kinase, tyrosine (receptor); EC 2.7.10.1; TK group; Eph family
Cellular Component: cell projection; integral to membrane; integral to plasma membrane; membrane; plasma membrane
Molecular Function: ATP binding; axon guidance receptor activity; ephrin receptor activity; kinase activity; nucleotide binding; protein kinase activity; protein-tyrosine kinase activity; transferase activity; transmembrane receptor protein tyrosine kinase activity; transmembrane-ephrin receptor activity
Biological Process: angiogenesis; axon guidance; axonal fasciculation; cell migration; central nervous system projection neuron axonogenesis; corpus callosum development; digestive tract morphogenesis; ephrin receptor signaling pathway; multicellular organismal development; nervous system development; palate development; phosphorylation; positive regulation of synaptogenesis; protein amino acid autophosphorylation; protein amino acid phosphorylation; regulation of axonogenesis; regulation of cell-cell adhesion; regulation of GTPase activity; retinal ganglion cell axon guidance; thymus development; transmembrane receptor protein tyrosine kinase signaling pathway; urogenital system development
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