oxidase

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Related to Oxidases: Dehydrogenases, Oxygenases, Peroxidases

oxidase

 [ok´sĭ-dās]
any of a class of enzymes that catalyze the reduction of molecular oxygen independently of hydrogen peroxide.

ox·i·dase

(ok'si-dās),
Classically, one of a group of enzymes, now termed oxidoreductases (EC class 1), that bring about oxidation by the addition of oxygen to a metabolite or by the removal of hydrogen or of one or more electrons. Oxidase is now used for those cases in which O2 acts as an acceptor (of H or of electrons); those removing hydrogen are now termed dehydrogenases. For individual oxidases, see the specific names.

oxidase

/ox·i·dase/ (ok´sĭ-dās) any enzyme of the class of oxidoreductases in which molecular oxygen is the hydrogen acceptor.

oxidase

(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.

ox′i·da′sic adj.

oxidase

[ok′sidās]
Etymology: Gk, oxys, sharp
an enzyme that induces biological oxidation by activating the oxygen in molecules containing the element, such as hydrogen peroxide.

ox·i·dase

(ok'si-dās)
One of a group of enzymes that bring about organic reactions in which O2 acts as an acceptor (of H or of electrons).

oxidase

an enzyme that catalyses a reaction in which oxygen is added to a substance (X) with hydrogen removed and water formed. Thus:

Most oxidases are proteins with metallic groups attached. For example, cytochrome oxidase contains iron and oxidizes cytochrome a in the ELECTRON TRANSPORT SYSTEM of aerobic respiration:

oxidase

any of a class of enzymes that catalyze the reduction of molecular oxygen independently of hydrogen peroxide.

oxidase test
used to identify bacteria that contain cytochrome c oxidase.
References in periodicals archive ?
Then, to discover the possible contribution of IMP to ROS generation, and to clear the effects of IMP on membrane components of NADPH oxidase, we also measured renal cortical mRNA expressions of p22phox, p47phox, p67phox, gp91phox and proteins of p47phox, gp91phox.
Glucose oxidase (from Aspergillus niger), galactose oxidase (from Dactylium dendroides), [beta]-galactosidase (from Aspergillus oryzae), D-glucose, D-galactose, and D-lactose were obtained from SigmaAldrich.
The results were expressed in mg of phenols g-1 fresh mass; C) Polyphenol Oxidase Enzyme (PPO): determined according to the methodologies of Siriphanich and Kader (1985) and Flukey and Jen (1978).
In this step, measurement of enzyme activity was done with commercial Cholesterol oxidase purchased from Sigma.
The vascular NADPH oxidase contributes to endothelial dysfunction and high blood pressure in the spontaneously hypertensive rat by enhancing superoxide production (5).
This is the first report to demonstrate the presence of allergenic proteins and oxidase activity in SPPs of respirable size.
Southern blot analysis was carried out to confirm the hybridization of Brevibacterium cholesterol oxidase type II oligo probe against the digested chromosomal DNA from R.
Keywords: Apocynin; NADPH oxidase inhibitor; Bioavailability; Glycoconjugates; Plasma; Brain
ROS are formed when NADPH oxidases interact with cells lining the airways.
The copper-containing amine oxidases (monoamine oxidase, semicarbazide-sensitive amine oxidase, histamine deaminase, amine oxygen oxidoreductase) are ubiquitous metalloenzymes as they have several essential functions in the metabolism of primary amines.
Cytochromes P450 receive particular attention, namely their multiplicity, structure, catalytic mechanisms, and the various reactions they catalyze, while other oxidoreductases are also presented, such as flavin monooxygenases, monoamine oxidases and other amine oxidases, aldehyde oxidase and xanthine dehydrogenase, peroxidases, and dehydrogenases-reductases.