Rab GTPase effector involved in the late steps of regulated exocytosis, both in endocrine and exocrine cells (By similarity). Acts as a potential RAB3B effector protein in epithelial cells.
Subcellular locations: Cytoplasm, Cytoplasmic vesicle, Secretory vesicle membrane
Recruited to the vesicle membrane in a GTP- and RAB3B-dependent manner in epithelial cells.
Moderate to high levels of expression in thyroid, ovary, stomach, heart, pancreas, skeletal muscle, kidney and liver. Also detected in epithelial cells.