2.7.1.67	1-phosphatidylinositol 4-kinase	D-myo-inositol (1,4,5)-trisphosphate biosynthesis	-	-	
2.7.1.68	1-phosphatidylinositol-4-phosphate 5-kinase	D-myo-inositol (1,4,5)-trisphosphate biosynthesis	-	-	
2.7.1.149	1-phosphatidylinositol-5-phosphate 4-kinase	D-myo-inositol (1,4,5)-trisphosphate biosynthesis	-	-	
2.7.8.11	CDP-diacylglycerol-inositol 3-phosphatidyltransferase	D-myo-inositol (1,4,5)-trisphosphate biosynthesis	-	-	
3.1.4.11	phosphoinositide phospholipase C	D-myo-inositol (1,4,5)-trisphosphate biosynthesis	-	-