Enables ephrin receptor binding activity. Involved in bone remodeling; ephrin receptor signaling pathway; and osteoclast differentiation. Predicted to be located in neuromuscular junction and perikaryon. Predicted to be active in plasma membrane. Is expressed in several structures, including alimentary system; central nervous system; ear; genitourinary system; and limb. Orthologous to human EFNA2 (ephrin A2). [provided by Alliance of Genome Resources, Apr 2022]