- Type I phosphatidylinositol 4-phosphate 5-kinase directly interacts with ADP-ribosylation factor 1 and is responsible for phosphatidylinositol 4,5-bisphosphate synthesis in the golgi compartment. Jones, D.H., Morris, J.B., Morgan, C.P., Kondo, H., Irvine, R.F., Cockcroft, S. J. Biol. Chem. (2000)