Predicted to enable ephrin receptor binding activity. Involved in presynapse assembly. Located in synapse. Is active in glutamatergic synapse. Is integral component of presynaptic membrane. Human ortholog(s) of this gene implicated in craniofrontonasal syndrome and dysostosis. Orthologous to human EFNB1 (ephrin B1). [provided by Alliance of Genome Resources, Apr 2022]