Any of a group of enzymes that catalyze oxidation, especially an enzyme that reacts with molecular oxygen to catalyze the oxidation of a substrate.
[OXID(ATION) + -ASE.]
oxidasic ox'i·da'sic adj.
oxidase
Dictionary:
ox·i·dase (ŏk'sĭ-dās', -dāz')  |
n.
Any of a group of enzymes that catalyze oxidation, especially an enzyme that reacts with molecular oxygen to catalyze the oxidation of a substrate.
Any of a group of enzymes that catalyze oxidation, especially an enzyme that reacts with molecular oxygen to catalyze the oxidation of a substrate.
| 5min Related Video: oxidase |
| Sports Science and Medicine: oxidase |
Any enzyme such as cytochrome oxidase, involved in oxidation reactions. These enzymes are also known as oxidoreductases.
| Veterinary Dictionary: oxidase |
Any of a class of enzymes that catalyze the reduction of molecular oxygen independently of hydrogen peroxide.
- o. test — used to identify bacteria that contain cytochrome c oxidase.
| Wikipedia: Oxidase |
An oxidase is any enzyme that catalyzes an oxidation/reduction reaction involving molecular oxygen (O2) as the electron acceptor. In these reactions, oxygen is reduced to water (H2O) or hydrogen peroxide (H2O2).
The oxidases are a subclass of the oxidoreductases.
Examples
An important example is cytochrome c oxidase, the key enzyme that allows the body to employ oxygen in the generation of energy and the final component of the electron transfer chain. Other examples are:
- glucose oxidase
- monoamine oxidase
- cytochrome P450 oxidase
- NADPH oxidase
- Xanthine oxidase
- L-gulonolactone oxidase
- laccase
- lysyl oxidase
Oxidase test
In microbiology, the oxidase test is used as a phenotypic characteristic for the identification of bacterial strains; it determines whether a given bacterium produces cytochrome oxidases (and therefore utilizes oxygen with an electron transfer chain).
External links
- Catalase & Oxidase tests video
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 | MAO |
| MAO (abbreviation) |
| dihydrolipoic acid |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved. Read more |
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| Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Oxidase". Read more |
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Mentioned in
- MAO
- MAO (abbreviation)
- dihydrolipoic acid
- MAOI (abbreviation)
