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Nitric oxide reductase (menaquinol) (EC 1.7.5.2) is an enzyme. This enzyme catalyses the following chemical reaction

2 nitric oxide + menaquinol ${\displaystyle \rightleftharpoons }$ nitrous oxide + menaquinone + H₂O

Nitric oxide reductase contains copper.

In 2015 the laboratory that had characterized the Bacillus azotoformans enzyme wrote, "The copper-A-dependent Nor from Bacillus azotoformans uses cytochrome c₅₅₁ as electron donor but lacks menaquinol activity, in contrast to our earlier report."

References

1. Cramm R, Pohlmann A, Friedrich B (October 1999). "Purification and characterization of the single-component nitric oxide reductase from Ralstonia eutropha H16". FEBS Letters. 460 (1): 6–10. doi:10.1016/s0014-5793(99)01315-0. PMID 10571051.
2. Strampraad MJ, Schröder I, de Vries S (February 2001). "A novel copper A containing menaquinol NO reductase from Bacillus azotoformans". Biochemistry. 40 (8): 2632–9. doi:10.1021/bi0020067. PMID 11327887.
3. Heering HA, de Vries S (October 2004). "NO reductase from Bacillus azotoformans is a bifunctional enzyme accepting electrons from menaquinol and a specific endogenous membrane-bound cytochrome c551". Biochemistry. 43 (42): 13487–95. doi:10.1021/bi0488101. PMID 15491156.
4. Al-Attar S, de Vries S (July 2015). "An electrogenic nitric oxide reductase". FEBS Letters. 589 (16): 2050–7. doi:10.1016/j.febslet.2015.06.033. PMID 26149211.

External links

• Nitric+oxide+reductase+(menaquinol) at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

• Biology

• EC 1.7.5