Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in intracellular protein transport; intraciliary transport; and photoreceptor cell morphogenesis. Predicted to act upstream of or within cilium assembly; flagellated sperm motility; and single fertilization. Predicted to be located in cytoplasm; microtubule organizing center; and sperm midpiece. Predicted to be part of intraciliary transport particle B. Predicted to be active in endomembrane system. Orthologous to several human genes including RABL2B (RAB, member of RAS oncogene family like 2B). [provided by Alliance of Genome Resources, Apr 2022]