At the Golgi membrane, phosphatidylinositol 4-phosphate (PI4P) is primarily generated from phosphorylation of phosphatidylinositol (PI). Other phosphoinositides are also generated by the action of various kinases and phosphatases such as: phosphatidylinositol 3-phosphate (PI3P), phosphatidylinositol 3,4-bisphosphate (PI(3,4)P2), phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2) (Godi et al. 1999, Minogue et al. 2001, Rohde et al. 2003, Sbrissa et al. 2007, Sbrissa et al. 2008, Domin et al. 2000, Arcaro et al. 2000).