Together with STX4 and VAMP2, may play a role in insulin-dependent movement of GLUT4 and in docking/fusion of intracellular GLUT4-containing vesicles with the cell surface in adipocytes.
Subcellular locations: Cytoplasm, Cytosol, Cell membrane
In platelets, predominantly cytosolic. Low amounts membrane-associated.
Megakaryocytes and platelets.