ID 1.7.1.15 DE nitrite reductase (NADH). AN assimilatory nitrite reductase. AN NADH-nitrite oxidoreductase. AN nitrite reductase (reduced nicotinamide adenine dinucleotide). CA 2 H2O + 3 NAD(+) + NH4(+) = 5 H(+) + 3 NADH + nitrite. CC -!- This prokaryotic enzyme is specific for NADH. CC -!- In addition to catalyzing the 6-electron reduction of nitrite to CC ammonia, the enzyme from Escherichia coli can also catalyze the CC 2-electron reduction of hydroxylamine to ammonia. cf. EC 1.7.1.4. DR P08201, NIRB_ECOLI ; P0A9I9, NIRD_ECO57 ; P0A9I8, NIRD_ECOLI ; DR P0A230, NIRD_SALTI ; P0A229, NIRD_SALTY ; //