Plays a role in intracellular vesicle trafficking and exocytosis . May play a role in maintaining insulin-containing dense core vesicles in pancreatic beta-cells and in preventing their degradation. May play a role in insulin secretion . Interacts with membranes containing phosphatidylinositol 3-phosphate (PtdIns(3P)) (By similarity).
Early endosome membrane ; Peripheral membrane protein ; Cytoplasmic side . Cytoplasmic vesicle membrane ; Peripheral membrane protein ; Cytoplasmic side .
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