MetaCyc Pathway: nitrate reduction IV (dissimilatory) in Escherichia coli BW25113

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Nitrate reductase (cytochrome):
nitrate[out] + 2 H+[out] + 2 a reduced [NapC protein][out]→nitrite[out] + 2 an oxidized [NapC protein][out] + H2O[out] (EC 1.9.6.1)
b2203 (napB)
b2206 (napA)
Nitrite reductase (cytochrome; ammonia-forming):
nitrite[out] + 6 a reduced c-type cytochrome[out] + 8 H+[out]→ammonium[out] + 6 an oxidized c-type cytochrome[out] + 2 H2O[out] (EC 1.7.2.2)
b4070 (nrfA)
b4071 (nrfB)
b4072 (nrfC)
b4073 (nrfD)

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Candidate genes for each reaction are identified from best hits to MetaCyc; by matching EC numbers (which are assigned by TIGRFam, SEED, or best hits to KEGG); or by matching SEED roles to KEGG reactions to MetaCyc reactions. See the "Protein" tab of each gene for more information