ID 7.1.1.11 DE ferredoxin--NAD(+) oxidoreductase (H(+)-transporting). AN Rnf complex. CA 2 reduced [2Fe-2S]-[ferredoxin] + NAD(+) + 3 H(+)(in) = 2 oxidized [2Fe- CA 2S]-[ferredoxin] + NADH + 2 H(+)(out). CC -!- This iron-sulfur and flavin-containing electron transport complex, CC isolated from some anaerobic bacteria, couples the energy from CC reduction of NAD(+) by ferredoxin to pumping protons out of the cell, CC generating a proton motive force across the cytoplasmic membrane. CC -!- Most similar complexes pump sodium ions rather than protons (cf. CC EC 7.2.1.2). //