Aliases for EPHB4 Gene
External Ids for EPHB4 Gene
Previous HGNC Symbols for EPHB4 Gene
Previous GeneCards Identifiers for EPHB4 Gene
Ephrin receptors and their ligands, the ephrins, mediate numerous developmental processes, particularly in the nervous system. Based on their structures and sequence relationships, ephrins are divided into the ephrin-A (EFNA) class, which are anchored to the membrane by a glycosylphosphatidylinositol linkage, and the ephrin-B (EFNB) class, which are transmembrane proteins. The Eph family of 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. Ephrin receptors make up the largest subgroup of the receptor tyrosine kinase (RTK) family. The protein encoded by this gene binds to ephrin-B2 and plays an essential role in vascular development. [provided by RefSeq, Jul 2008]
GeneCards Summary for EPHB4 Gene
EPHB4 (EPH Receptor B4) is a Protein Coding gene. Diseases associated with EPHB4 include prostate cancer and breast cancer. Among its related pathways are GPCR Pathway and Akt Signaling. GO annotations related to this gene include transmembrane receptor protein tyrosine kinase activity and ephrin receptor activity. An important paralog of this gene is EPHB3.
UniProtKB/Swiss-Prot for EPHB4 Gene
Receptor tyrosine kinase which binds promiscuously transmembrane ephrin-B family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Together with its cognate ligand/functional ligand EFNB2 plays a central role in heart morphogenesis and angiogenesis through regulation of cell adhesion and cell migration. EPHB4-mediated forward signaling controls cellular repulsion and segregation form EFNB2-expressing cells. Plays also a role in postnatal blood vessel remodeling, morphogenesis and permeability and is thus important in the context of tumor angiogenesis.
Ephrins are a family of receptor tyrosine kinases (RTKs) that influence cell migration. In conjunction with the ephrin ligands, ephrin receptors are involved in a variety of developmental events. EphB4 is overexpressed in many tumor types, including breast and prostate cancer.