Hydroxylamine dehydrogenase (EC 1.7.2.6, HAO (ambiguous)) is an enzyme with systematic name hydroxylamine:ferricytochrome-c oxidoreductase.[1][2][3][4][5] This enzyme catalyses the following chemical reaction
- (1) hydroxylamine + H2O + 2 ferricytochrome c nitrite + 2 ferrocytochrome c + 5 H+
- (2) hydroxylamine + ferricytochrome c nitric oxide + ferrocytochrome c + 3 H+
The enzymes from the nitrifying bacterium Nitrosomonas europaea and the methylotrophic bacterium Methylococcus capsulatus are hemoproteins.
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AP Biology Lab 2: Enzyme Catalysis
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References
- ^ Rees MK (January 1968). "Studies of the hydroxylamine metabolism of Nitrosomonas europaea. I. Purification of hydroxylamine oxidase". Biochemistry. 7 (1): 353–66. doi:10.1021/bi00841a045. PMID 5758552.
- ^ Hooper AB, Terry KR (November 1979). "Hydroxylamine oxidoreductase of Nitrosomonas. Production of nitric oxide from hydroxylamine". Biochimica et Biophysica Acta. 571 (1): 12–20. doi:10.1016/0005-2744(79)90220-1. PMID 497235.
- ^ Hooper AB, Balny C (August 1982). "Reaction of oxygen with hydroxylamine oxidoreductase of Nitrosomonas: fast kinetics". FEBS Letters. 144 (2): 299–303. doi:10.1016/0014-5793(82)80658-3. PMID 7117545. S2CID 9726167.
- ^ Lipscomb JD, Hooper AB (August 1982). "Resolution of multiple heme centers of hydroxylamine oxidoreductase from Nitrosomonas. 1. Electron paramagnetic resonance spectroscopy". Biochemistry. 21 (17): 3965–72. doi:10.1021/bi00260a010. PMID 6289867.
- ^ Poret-Peterson AT, Graham JE, Gulledge J, Klotz MG (December 2008). "Transcription of nitrification genes by the methane-oxidizing bacterium, Methylococcus capsulatus strain Bath". The ISME Journal. 2 (12): 1213–20. doi:10.1038/ismej.2008.71. PMID 18650926.
External links
- Hydroxylamine+dehydrogenase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
This page was last edited on 26 August 2023, at 14:30