Interacts with numerous Rab family members, functioning as Rab effector for some, and as GTPase activator for others. Promotes GTP hydrolysis by RAB34 and RAB36. Probably functions as a GTPase effector with RAB9A and RAB9B; does not stimulate GTP hydrolysis with RAB9A and RAB9B.
Subcellular locations: Golgi apparatus, Trans-Golgi network, Cytoplasmic vesicle membrane, Cytoplasm
Recruited to cytoplasmic vesicle membranes via its interaction with Rab family members, such as RAB9A.
Mainly expressed in brain, heart and testis.