Predicted to enable integrin binding activity. Acts upstream of or within angiogenesis; blood coagulation; and endothelial cell proliferation. Part of integrin complex. Is expressed in blood; thrombocyte; and ventral wall of dorsal aorta. Human ortholog(s) of this gene implicated in Glanzmann's thrombasthenia; platelet-type bleeding disorder 16; thrombocytopenia; and von Willebrand's disease 1. Orthologous to human ITGA2B (integrin subunit alpha 2b).