4alpha-carboxyzymosterol + NAD(+) => zymosterone + CO2 + NADH
4alpha-carboxyzymosterol + nad(+) => zymosterone + co2 + nadh
4alpha-carboxyzymosterol + NAD(+) => zymosterone + CO2 + NADH
4alpha-carboxyzymosterol + nad(+) => zymosterone + co2 + nadh