5beta-pregnan-3,20-dione + NADPH + H(+) => 3alpha-hydroxy-5beta-pregnan-20-one + NADP(+)
5beta-pregnan-3,20-dione + nadph + h(+) => 3alpha-hydroxy-5beta-pregnan-20-one + nadp(+)
5beta-pregnan-3,20-dione + NADPH + H(+) => 3alpha-hydroxy-5beta-pregnan-20-one + NADP(+)
5beta-pregnan-3,20-dione + nadph + h(+) => 3alpha-hydroxy-5beta-pregnan-20-one + nadp(+)