label: lactate + 2 reduced [2Fe-2S]-[ferredoxin] + 2 NAD(+) <=> 2 oxidized [2Fe-2S]-[ferredoxin] + pyruvate + 2 NADH
label_lc: lactate + 2 reduced [2fe-2s]-[ferredoxin] + 2 nad(+) <=> 2 oxidized [2fe-2s]-[ferredoxin] + pyruvate + 2 nadh