Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in protein localization to plasma membrane. Predicted to be located in mitochondrion; nuclear envelope; and perinuclear region of cytoplasm. Predicted to be active in endosome; plasma membrane; and synaptic vesicle. Orthologous to several human genes including RAB40B (RAB40B, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]