label: methyl-Co(III)-[methylamine-specific corrinoid protein] + NH4(+) => Co(I)-[methylamine-specific corrinoid protein] + methylamine + H(+)
label_lc: methyl-co(iii)-[methylamine-specific corrinoid protein] + nh4(+) => co(i)-[methylamine-specific corrinoid protein] + methylamine + h(+)