inositol hexakisphosphate 1-kinase activity
Catalysis of the reaction: 1D-myo-inositol hexakisphosphate + ATP = 1-diphospho-1D-myo-inositol 2,3,4,5,6-pentakisphosphate + ADP.
GO:0000828
inositol hexakisphosphate kinase activity
is_a
SPCC1672.06c