ITPK1 (Inositol Tetrakisphosphate 1-Kinase), Fig. 2

A placement of ITPK1 catalytic activities into the broader pathway of inositol phosphate metabolism. Numbers in the figure refer to various enzymes as follows: 1, Inositol polyphosphate multikinase (EC 2.7.1.151); 2, Ins(1,4,5)P3 3-kinase (EC 2.7.1.127); 3, Ins(1,4,5)P3/Ins(1,3,4,5)P4 5-phosphatase (EC 3.1.3.56); 4, ITPK1 (EC 2.7.1.134)