EOG8MKQZ8	GO:0008440	1/6	inositol-1,4,5-trisphosphate 3-kinase activity	molecular_function	"Catalysis of the reaction: 1D-myo-inositol 1,4,5-trisphosphate + ATP = 1D-myo-inositol 1,3,4,5-tetrakisphosphate + ADP + 2 H(+)." [EC:2.7.1.127, RHEA:11023]