Reaction catalyzed by leucoanthocyanidin reductase (1.17.1.3)
+
NADP+
+
H2O
=
+
NADPH
+
(2R,3S)-catechin
+
NADP+
+
H2O
=
2,3-trans-3,4-cis-leucocyanidin
+
NADPH
+
H+
