Reaction catalyzed by 4-hydroxy-3-methylbut-2-en-1-yl diphosphate reductase (1.17.7.4)
+
NADPH
=
+
+
NADP+
+
H2O
(E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate
+
NADPH
=
dimethylallyl diphosphate
+
isopentenyl diphosphate
+
NADP+
+
H2O
