Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in positive regulation of exocytosis. Predicted to act upstream of or within protein transport and vesicle-mediated transport. Predicted to be located in presynapse. Predicted to be active in Golgi membrane. Is expressed in nervous system. Orthologous to human RAB2B (RAB2B, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]