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