Reaction catalyzed by cyanocobalamin reductase (1.16.1.6)
2
cob(II)alamin-[cyanocobalamin reductase]
+
2
+
NADP+
=
2
+
2
[cyanocobalamin reductase]
+
NADPH
+
2 cob(II)alamin-[cyanocobalamin reductase]
+
2 hydrogen cyanide
+
NADP+
=
2 cyanocob(III)alamin
+
2 [cyanocobalamin reductase]
+
NADPH
+
H+
