label: 4alpha-carboxyzymosterol + 6 Fe(III)-[cytochrome b5] + 4 H2O => 4alpha-methylzymosterol + 6 Fe(II)-[cytochrome b5] + 3 O2 + 5 H(+)
label_lc: 4alpha-carboxyzymosterol + 6 fe(iii)-[cytochrome b5] + 4 h2o => 4alpha-methylzymosterol + 6 fe(ii)-[cytochrome b5] + 3 o2 + 5 h(+)