label: inositol hexakisphosphate kinase activity
label_lc: inositol hexakisphosphate kinase activity
description: "Catalysis of the reaction: ATP + 1D-myo-inositol hexakisphosphate = ADP + diphospho-1D-myo-inositol-pentakisphosphate. The isomeric configuration of diphospho-1D-myo-inositol-pentakisphosphate (PP-IP5) is unknown."