ID 1.17.98.4 DE formate dehydrogenase (acceptor). AN formate dehydrogenase H. AN formate dehydrogenase O. CA A + formate + H(+) = AH2 + CO2. CC -!- Formate dehydrogenase H is a cytoplasmic enzyme that oxidizes formate CC without oxygen transfer, transferring electrons to a hydrogenase. CC -!- The two enzymes form the formate-hydrogen lyase complex. CC -!- The enzyme contains a selenocysteine residue. CC -!- Formerly EC 1.1.99.33 and EC 1.17.99.7. DR P07658, FDHF_ECOLI ; //