inositol-1,4,5,6-tetrakisphosphate 2-kinase activity
inositol-1,4,5,6-tetrakisphosphate 2-kinase activity
Catalysis of the reaction: 1D-myo-inositol 1,4,5,6-tetrakisphosphate + ATP = 1D-myo-inositol 1,2,4,5,6-pentakisphosphate + ADP + H+.