Compound as reactive (1)
3-dehydro-4-methylzymosterol + a reduced electron donor → an oxidized electron donor + 4α-methyl-5α-cholesta-8,24-dien-3β-ol
Compound as product (3)
NAD(P)+ + 4β-carboxy-4α-methyl-5α-cholesta-8,24-dien-3β-ol → 3-dehydro-4-methylzymosterol + NAD(P)H + CO2
NAD(P)+ + 4α-carboxy-4β-methyl-5α-cholesta-8,24-dien-3β-ol → 3-dehydro-4-methylzymosterol + NAD(P)H + CO2
4α-carboxy-4β-methyl-5α-cholesta-8,24-dien-3β-ol + NAD+ → 3-dehydro-4-methylzymosterol + CO2 + H+ + NADH
Reversible reaction (1)
3-dehydro-4-methylzymosterol + NADPH + H+ ↔ 4α-methyl-5α-cholesta-8,24-dien-3β-ol + NADP+