Predicted to enable transmembrane-ephrin receptor activity. Involved in angiogenesis; ephrin receptor signaling pathway; and heart morphogenesis. Acts upstream of or within positive regulation of T cell costimulation; positive regulation of aorta morphogenesis; and venous blood vessel morphogenesis. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be part of receptor complex. Predicted to be active in neuron projection. Predicted to be integral component of plasma membrane. Is expressed in several structures, including alimentary system; brain; cardiovascular system; genitourinary system; and sensory organ. Used to study cystic kidney disease. Human ortholog(s) of this gene implicated in hereditary lymphedema. Orthologous to human EPHB4 (EPH receptor B4). [provided by Alliance of Genome Resources, Apr 2022]