1D-myo-inositol hexakisphosphate + ATP => 1-diphospho-1D-myo-inositol 2,3,4,5,6-pentakisphosphate + ADP
1d-myo-inositol hexakisphosphate + atp => 1-diphospho-1d-myo-inositol 2,3,4,5,6-pentakisphosphate + adp