label: sulfite + 6 reduced [2Fe-2S]-[ferredoxin] + 7 H(+) => hydrogen sulfide + 6 oxidized [2Fe-2S]-[ferredoxin] + 3 H2O
label_lc: sulfite + 6 reduced [2fe-2s]-[ferredoxin] + 7 h(+) => hydrogen sulfide + 6 oxidized [2fe-2s]-[ferredoxin] + 3 h2o