Reaction catalyzed by 4-hydroxy-3-methylbut-2-en-1-yl diphosphate reductase (1.17.7.4)
+
2
oxidized ferredoxin [iron-sulfur] cluster
+
H2O
=
+
2
reduced ferredoxin [iron-sulfur] cluster
+
2
isopentenyl diphosphate
+
2 oxidized ferredoxin [iron-sulfur] cluster
+
H2O
=
(E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate
+
2 reduced ferredoxin [iron-sulfur] cluster
+
2 H+
