ID   1.3.1.81
DE   (+)-pulegone reductase.
CA   (1) (1R,4S)-menthone + NADP(+) = (R)-pulegone + H(+) + NADPH.
CA   (2) (2R,5R)-isomenthone + NADP(+) = (R)-pulegone + H(+) + NADPH.
CC   -!- NADH cannot replace NADPH as reductant.
CC   -!- The Delta(8,9)-double bond of (+)-cis-isopulegone and the Delta(1,2)-
CC       double bond of (+-)-piperitone are not substrates.
CC   -!- The enzyme from peppermint (Mentha x piperita) converts (+)-pulegone
CC       into both (-)-menthone and (+)-isomenthone at a ratio of 70:30 for
CC       native enzyme but it does not catalyze the reverse reaction.
DR   Q6WAU0, PULR_MENPI ;
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