Predicted to enable ephrin receptor binding activity. Predicted to be involved in several processes, including cell morphogenesis involved in differentiation; heart valve morphogenesis; and regulation of protein metabolic process. Predicted to act upstream of or within several processes, including negative regulation of thymocyte apoptotic process; nervous system development; and regulation of MAPK cascade. Predicted to be located in extracellular region. Predicted to be active in plasma membrane. Predicted to be anchored component of plasma membrane. Orthologous to human EFNA1 (ephrin A1). [provided by Alliance of Genome Resources, Apr 2022]