The Enzyme Database

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EC 1.7.5.1     
Accepted name: nitrate reductase (quinone)
Reaction: nitrate + a quinol = nitrite + a quinone + H2O
Other name(s): nitrate reductase A; nitrate reductase Z; quinol/nitrate oxidoreductase; quinol-nitrate oxidoreductase; quinol:nitrate oxidoreductase; NarA; NarZ; NarGHI; dissimilatory nitrate reductase
Systematic name: nitrite:quinone oxidoreductase
Comments: A membrane-bound enzyme which supports anaerobic respiration on nitrate under anaerobic conditions and in the presence of nitrate. Contains the bicyclic form of the molybdo-bis(molybdopterin guanine dinucleotide) cofactor, iron-sulfur clusters and heme b. Escherichia coli expresses two forms NarA and NarZ, both being comprised of three subunits.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Enoch, H.G. and Lester, R.L. The role of a novel cytochrome b-containing nitrate reductase and quinone in the in vitro reconstruction of formate-nitrate reductase activity of E. coli. Biochem. Biophys. Res. Commun. 61 (1974) 1234–1241. [PMID: 4616697]
2.  Bertero, M.G., Rothery, R.A., Palak, M., Hou, C., Lim, D., Blasco, F., Weiner, J.H. and Strynadka, N.C. Insights into the respiratory electron transfer pathway from the structure of nitrate reductase A. Nat. Struct. Biol. 10 (2003) 681–687. [PMID: 12910261]
3.  Lanciano, P., Magalon, A., Bertrand, P., Guigliarelli, B. and Grimaldi, S. High-stability semiquinone intermediate in nitrate reductase A (NarGHI) from Escherichia coli is located in a quinol oxidation site close to heme bD. Biochemistry 46 (2007) 5323–5329. [PMID: 17439244]
4.  Bertero, M.G., Rothery, R.A., Boroumand, N., Palak, M., Blasco, F., Ginet, N., Weiner, J.H. and Strynadka, N.C. Structural and biochemical characterization of a quinol binding site of Escherichia coli nitrate reductase A. J. Biol. Chem. 280 (2005) 14836–14843. [PMID: 15615728]
5.  Bonnefoy, V. and Demoss, J.A. Nitrate reductases in Escherichia coli. Antonie Van Leeuwenhoek 66 (1994) 47–56. [PMID: 7747940]
6.  Guigliarelli, B., Asso, M., More, C., Augier, V., Blasco, F., Pommier, J., Giordano, G. and Bertrand, P. EPR and redox characterization of iron-sulfur centers in nitrate reductases A and Z from Escherichia coli. Evidence for a high-potential and a low-potential class and their relevance in the electron-transfer mechanism. Eur. J. Biochem. 207 (1992) 61–68. [PMID: 1321049]
7.  Iobbi-Nivol, C., Santini, C.L., Blasco, F. and Giordano, G. Purification and further characterization of the second nitrate reductase of Escherichia coli K12. Eur. J. Biochem. 188 (1990) 679–687. [PMID: 2139607]
[EC 1.7.5.1 created 2010]
 
 


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