4,4-dimethyl-5alpha-cholesta-8,24-dien-3beta-ol + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+) => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 Fe(III)-[cytochrome b5] + H2O
4,4-dimethyl-5alpha-cholesta-8,24-dien-3beta-ol + 2 fe(ii)-[cytochrome b5] + o2 + 2 h(+) => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 fe(iii)-[cytochrome b5] + h2o
4,4-dimethyl-5alpha-cholesta-8,24-dien-3beta-ol + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+) => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 Fe(III)-[cytochrome b5] + H2O
4,4-dimethyl-5alpha-cholesta-8,24-dien-3beta-ol + 2 fe(ii)-[cytochrome b5] + o2 + 2 h(+) => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 fe(iii)-[cytochrome b5] + h2o