Reaction catalyzed by A-factor type gamma-butyrolactone 1'-reductase (1S-forming) (1.1.1.413)
+
NADP+
=
+
NADPH
+
a (3R,4R)-3-[(1S)-1-hydroxyalkyl]-4-(hydroxymethyl)oxolan-2-one
+
NADP+
=
a (3R,4R)-3-alkanoyl-4-(hydroxymethyl)oxolan-2-one
+
NADPH
+
H+
