ID   1.3.1.30
DE   Progesterone 5-alpha-reductase.
AN   Steroid 5-alpha-reductase.
CA   5-alpha-pregnan-3,20-dione + NADP(+) = progesterone + NADPH.
CC   -!- Testosterone and 20-alpha-hydroxy-4-pregn-3-one can act in place of
CC       progesterone.
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