Golgi phosphoprotein 3 (GOLPH3)

Phosphatidylinositol-4-phosphate-binding protein which links Golgi membranes into the cytoskeleton and may take part in the tensile force required for vesicle budding from the Golgi. Thereby, may play a role in Golgi membrane trafficking and could indirectly give its flattened shape to the Golgi apparatus.

May also bind to the coatomer to regulate Golgi membrane trafficking. May play a role in anterograde transport from the Golgi to the plasma membrane and regulate secretion.