Predicted to enable GDP binding activity; TPR domain binding activity; and signaling receptor binding activity. Predicted to be involved in several processes, including protein localization to membrane; regulation of secretion by cell; and secretion by cell. Predicted to act upstream of or within protein transport. Located in mitochondrion. Orthologous to human RAB8B (RAB8B, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]