Predicted to enable several functions, including AP-1 adaptor complex binding activity; AP-3 adaptor complex binding activity; and BLOC-2 complex binding activity. Predicted to be involved in several processes, including endosome to melanosome transport; melanosome assembly; and phagosome maturation. Located in melanosome. Is expressed in duodenum; ileum; metanephros; prostate gland; and testis. Orthologous to human RAB32 (RAB32, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]