Reaction catalyzed by methylglyoxal reductase (NADPH) (1.1.1.283)
+
NADPH
+
=
+
NADP+
ethyl (2R)-2-methyl-3-oxobutanoate
+
NADPH
+
H+
=
ethyl (2R,3S)-3-hydroxy-2-methylbutanoate
+
NADP+
