Parent Class:

EC-Numbers → 1 -- Oxidoreductases → 1.9 -- Acting on a heme group of donors → 1.9.6 -- With a nitrogenous group as acceptor

Synonyms: respiratory nitrate reductase, benzyl viologen-nitrate reductase

Systematic Name: ferrocytochrome:nitrate oxidoreductase

Unification Links: BRENDA:1.9.6.1, ENZYME:1.9.6.1, IUBMB-ExplorEnz:1.9.6.1

Supersedes EC number: 1.7.99.4

Reaction:
nitrate_[periplasm] + 2 reduced [NapC protein]_[periplasm] + 2 H⁺_[periplasm] → 2 oxidized [NapC protein]_[periplasm] + nitrite_[periplasm] + H₂O_[periplasm]

Enzymes and Genes:
periplasmic nitrate reductase: napA, napB ( Escherichia coli K-12 substr. MG1655 )
periplasmic nitrate reductase (cytochrome): napB, napA ( Aliivibrio fischeri )

Citations: [Sadana57]

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References

Sadana57: Sadana, J.C., McElroy, W.D. (1957). "Nitrate reductase from Achromobacter fischeri; purification and properties: function of flavines and cytochrome." Arch Biochem Biophys 67(1);16-34. PMID: 13412117

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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 46(D1):D633-D639 2018
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