function:Participates in exocrine secretion: regulates the secretion of acinar granules in the parotid gland.,similarity:Belongs to the small GTPase superfamily. Rab family.,tissue specificity:Predominantly expressed in brain.,
Golgi apparatus membrane ; Lipid-anchor ; Cytoplasmic side . Cytoplasmic vesicle, secretory vesicle membrane ; Lipid-anchor ; Cytoplasmic side . Not localized at the plasma membrane (By similarity). Inhibition of S-geranylgeranyl cysteine formation abolishes membrane location. .
Predominantly expressed in brain.