Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in vesicle-mediated transport. Predicted to be located in cytoplasmic vesicle; endoplasmic reticulum membrane; and endoplasmic reticulum-Golgi intermediate compartment membrane. Predicted to be active in Golgi membrane. Is expressed in axial mesoderm; nervous system; neural plate; notochord; and solid lens vesicle. Orthologous to human RAB2A (RAB2A, member RAS oncogene family).