5alpha-cholest-8-en-3beta-ol + NADP(+) <=> zymosterol + NADPH + H(+)
5alpha-cholest-8-en-3beta-ol + nadp(+) <=> zymosterol + nadph + h(+)
5alpha-cholest-8-en-3beta-ol + NADP(+) <=> zymosterol + NADPH + H(+)
5alpha-cholest-8-en-3beta-ol + nadp(+) <=> zymosterol + nadph + h(+)