Reaction catalyzed by crotonyl-CoA carboxylase/reductase (1.3.1.85)
+
NADP+
=
+
+
NADPH
+
(2S)-ethylmalonyl-CoA
+
NADP+
=
(E)-but-2-enoyl-CoA
+
CO2
+
NADPH
+
H+
