This gene encodes a member of 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 2 fibronectin type III repeats.The ephrin 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.The protein encoded by this gene functions as a receptor for ephrin A2, A3 and A5 and plays a role in short-range contact-mediated axonal guidance during development of the mammalian nervous system.[provided by RefSeq]