-ENZREV 5.3.3.2 -ENZIRREV 1.1.1.34 1.14.13.13 2.5.1.10 4.1.1.33 5.4.99.7 -METINT (S)-3-Hydroxy-3-methylglutaryl-CoA (R)-mevalonate CoA Calcidiol O2 calcitriol H2O Geranyl_diphosphate diphosphate trans,trans-farnesyl_diphosphate ATP (R)-5-diphosphomevalonate ADP phosphate CO2 Isopentenyl_diphosphate dimethylallyl_diphosphate (S)-2,3-Epoxysqualene lanosterol -METEXT NADPH NADP+ isopentenyl_diphosphate -CAT 1.1.1.34 : (S)-3-Hydroxy-3-methylglutaryl-CoA + 2 NADPH = (R)-mevalonate + CoA + 2 NADP+ . 1.14.13.13 : Calcidiol + NADPH + O2 = calcitriol + NADP+ + H2O . 2.5.1.10 : Geranyl_diphosphate + isopentenyl_diphosphate = diphosphate + trans,trans-farnesyl_diphosphate . 4.1.1.33 : ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl_diphosphate + CO2 . 5.3.3.2 : Isopentenyl_diphosphate = dimethylallyl_diphosphate . 5.4.99.7 : (S)-2,3-Epoxysqualene = lanosterol .