2 oxidized [4Fe-4S]-[ferredoxin] + an aldehyde + H2O <=> 2 reduced [4Fe-4S]-[ferredoxin] + a carboxylate + 3 H(+)
2 oxidized [4fe-4s]-[ferredoxin] + an aldehyde + h2o <=> 2 reduced [4fe-4s]-[ferredoxin] + a carboxylate + 3 h(+)