Ephrin type-B receptor 3 is a protein that in humans is encoded by the EPHB3 gene. [5] [6]
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 is a receptor for ephrin-B family members. [6]
EPHB3 has been shown to interact with MLLT4 [7] and RAS p21 protein activator 1. [8]
Eph receptors are a group of receptors that are activated in response to binding with Eph receptor-interacting proteins (Ephrins). Ephs form the largest known subfamily of receptor tyrosine kinases (RTKs). Both Eph receptors and their corresponding ephrin ligands are membrane-bound proteins that require direct cell-cell interactions for Eph receptor activation. Eph/ephrin signaling has been implicated in the regulation of a host of processes critical to embryonic development including axon guidance, formation of tissue boundaries, cell migration, and segmentation. Additionally, Eph/ephrin signaling has been identified to play a critical role in the maintenance of several processes during adulthood including long-term potentiation, angiogenesis, and stem cell differentiation and cancer.
RAS p21 protein activator 1 or RasGAP, also known as RASA1, is a 120-kDa cytosolic human protein that provides two principal activities:
Ephrin-B2 is a protein that in humans is encoded by the EFNB2 gene.
Afadin is a protein that in humans is encoded by the AFDN gene.
Ephrin type-B receptor 2 is a protein that in humans is encoded by the EPHB2 gene.
EPH receptor A2 is a protein that in humans is encoded by the EPHA2 gene.
Ephrin type-B receptor 4 is a protein that in humans is encoded by the EPHB4 gene.
Ephrin A1 is a protein that in humans is encoded by the EFNA1 gene.
EPH receptor A4 is a protein that in humans is encoded by the EPHA4 gene.
Ephrin type-B receptor 1 is a protein that in humans is encoded by the EPHB1 gene.
EPH receptor A3 is a protein that in humans is encoded by the EPHA3 gene.
Ephrin type-B receptor 6 is a protein that in humans is encoded by the EPHB6 gene.
Ephrin type-A receptor 8 is a protein that in humans is encoded by the EPHA8 gene.
Ephrin type-A receptor 7 is a protein that in humans is encoded by the EPHA7 gene.
EPH receptor A5 is a protein that in humans is encoded by the EPHA5 gene.
Ephrin A4 is a protein that in humans is encoded by the EFNA4 gene.
Ephrin A3 is a protein that in humans is encoded by the EFNA3 gene.
Ephrin-B3 is a protein that in humans is encoded by the EFNB3 gene.
EPH receptor A1 is a protein that in humans is encoded by the EPHA1 gene.
Ephrin A5 is a protein that in humans is encoded by the EFNA5 gene.