5alpha-cholestan-3-one + NADP(+) <=> cholest-4-en-3-one + NADPH + H(+)
5alpha-cholestan-3-one + nadp(+) <=> cholest-4-en-3-one + nadph + h(+)
5alpha-cholestan-3-one + NADP(+) <=> cholest-4-en-3-one + NADPH + H(+)
5alpha-cholestan-3-one + nadp(+) <=> cholest-4-en-3-one + nadph + h(+)