Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in autophagosome assembly and intracellular protein transport. Predicted to act upstream of or within autophagy and protein transport. Located in endoplasmic reticulum-Golgi intermediate compartment. Is expressed in diaphragm. Orthologous to several human genes including RAB1B (RAB1B, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]