label: 4beta-methylzymosterol-4alpha-carbaldehyde + 2 Fe(III)-[cytochrome b5] + 2 H2O => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+)
label_lc: 4beta-methylzymosterol-4alpha-carbaldehyde + 2 fe(iii)-[cytochrome b5] + 2 h2o => 4alpha-hydroxymethyl-4beta-methylzymosterol + 2 fe(ii)-[cytochrome b5] + o2 + 2 h(+)