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Dictionary:

oxidase

  (ŏk'sĭ-dās', -dāz') pronunciation
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.

[OXID(ATION) + –ASE.]

oxidasic ox'i·da'sic adj.
 
 
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 oxidase 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:

Oxidase test

In microbiology, the oxidase test is used as a phenotypic character for the identification of bacterial strains; it determines whether a given bacterium produces cytochrome oxidases (and therefore utilizes oxygen with an electron transfer chain).

Bacteria that can or must utilize oxygen are called (facultative) aerobic bacteria.

External links

  • Catalase & Oxidase tests video
Proteins: enzymes
Topics Active site - Allosteric regulation - Binding site - Catalytically perfect enzyme - Coenzyme - Cofactor - Cooperativity - EC number
Enzyme catalysis - Enzyme inhibitor - Enzyme kinetics - Lineweaver-Burk plot - Michaelis-Menten kinetics - List of enzymes
Types EC1 Oxidoreductases/list - EC2 Transferases/list - EC3 Hydrolases/list - EC4 Lyases/list - EC5 Isomerases/list - EC6 Ligases/list

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.  Read more
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
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Oxidase".  Read more

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