2Q7D CRYSTAL STRUCTURE OF HUMAN INOSITOL 1,3,4-TRISPHOSPHATE 5/6- KINASE (ITPK1) IN COMPLEX WITH AMPPNP AND MN2+ TRANSFERASE, INOSITOL, INOSITOL KINASE, KINASE, ITPK1, INOSITOL 1,3,4- 5/6-KINASE, PHOSPHATE, INOSITOL PHOSPHATE, INOSITOLPHOSPHATE, POLYPHOSPHATE