label: coenzyme B + coenzyme M + 2 reduced [2Fe-2S]-[ferredoxin] + 2 H(+) <=> coenzyme M-coenzyme B heterodisulfide + 2 H2 + 2 oxidized [2Fe-2S]-[ferredoxin]
label_lc: coenzyme b + coenzyme m + 2 reduced [2fe-2s]-[ferredoxin] + 2 h(+) <=> coenzyme m-coenzyme b heterodisulfide + 2 h2 + 2 oxidized [2fe-2s]-[ferredoxin]