label: Co(I)-[corrinoid Fe-S protein] + acetyl-CoA + H(+) => methyl-Co(III)-[corrinoid Fe-S protein] + CO + CoA
label_lc: co(i)-[corrinoid fe-s protein] + acetyl-coa + h(+) => methyl-co(iii)-[corrinoid fe-s protein] + co + coa