ID 1.3.7.1 DE 6-hydroxynicotinate reductase. AN 6-hydroxynicotinic reductase. AN 6-oxotetrahydro-nicotinate dehydrogenase. AN HNA reductase. CA 1,4,5,6-tetrahydro-6-oxonicotinate + oxidized 2[4Fe-4S]-[ferredoxin] = CA 6-hydroxynicotinate + 2 H(+) + reduced 2[4Fe-4S]-[ferredoxin]. CC -!- Forms part of the nicotinate-fermentation catabolism pathway in CC Eubacterium barkeri. CC -!- Other enzymes involved in this pathway are EC 1.17.5.1, EC 3.5.2.18, CC EC 1.1.1.291, EC 5.4.99.4, EC 5.3.3.6, EC 4.2.1.85 and EC 4.1.3.32. DR Q0QLF7, HNR_EUBBA ; //