Predicted to enable GDP binding activity; GTP binding activity; and GTPase activity. Involved in positive regulation of phagocytosis, engulfment. Located in early phagosome membrane and phagocytic cup. Is expressed in axial musculature; ganglia; medulla oblongata basal plate; submandibular gland primordium; and vibrissa. Orthologous to human RAB31 (RAB31, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]