This antibody is specific for the endogenous EphA4 receptor protein. No cross-reactivity with EphA5 or EphA7 has been detected. On western blots, this antibody identifies a band at ~110-120 kDa. Reactivity has been confirmed with EphA4-transfected 293T cells and mouse brain lysates by western blot and immunoprecipitation and on transfected 293 cells and mouse hippocampus by immunohistochemistry.
This gene belongs to the ephrin receptor subfamily of the protein tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and two fibronectin type III repeats. They can be grouped into two subclasses based on sequence homology of their extracellular domain sequences and their ligand-binding affinities: the EphA and the EphB receptors. The EphA receptors bind ephrin-A ligands, which are tethered to the membrane by a GPI linkage, and the EphB receptors bind ephrin-B ligands, which have a membrane-spanning region. The Eph receptors are widely expressed during embryonic development, including in the nervous system and the vascular system. Ephrins and Eph receptors have been implicated in many developmental processes including neuronal network formation, guidance of cell migration, and axonal pathfinding. They remain expressed at lower levels in adult tissues and are upregulated in pathological conditions such as cancer. EphA4 is preferentially expressed in the embryonic and adult nervous system, including the adult hippocampus, and in platelets. EphA4 has previously been designated Cek8 in chicken, Tyro1 in rat, and Sek1 in mouse.
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Protein Aliases: Cek8; EK8; EPH-like kinase 8; Ephrin type-A receptor 4; HEK8; receptor protein-tyrosine kinase HEK8; SEK; TYRO1; TYRO1 protein tyrosine kinase; Tyrosine-protein kinase receptor MPK-3; Tyrosine-protein kinase receptor SEK; Tyrosine-protein kinase receptor SEK-1; Tyrosine-protein kinase TYRO1
Gene Aliases: 2900005C20Rik; AI385584; CEK8; EPHA4; HEK8; rb; SEK; Sek1; TYRO1