oxidases


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Related to oxidases: Dehydrogenases, Oxygenases, Peroxidases

oxidases,

in biochemistry, enzymes that catalyze reactions that directly involve molecular oxygen (see oxidation and reductionoxidation and reduction,
complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation
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). Some utilize flavin coenzymescoenzyme
, any one of a group of relatively small organic molecules required for the catalytic function of certain enzymes. A coenzyme may either be attached by covalent bonds to a particular enzyme or exist freely in solution, but in either case it participates intimately in
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 derived from riboflavin (see vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
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 B2). Others oxidize compounds by the removal of hydrogen, such as alcohol dehydrogenase's catalysis of ethanol to acetaldehyde. Copper-containing oxidases catalyze a variety of biological oxidations.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Oxidases

 

a group of enzymes of the oxidoreductase class. Widely distributed in nature, oxidases catalyze oxidation-reduction reactions in which molecular oxygen acts as a hydrogen acceptor in living cells. Water (H2O) or hydrogen peroxide (H2O2) is formed during the transfer of hydrogen from the oxidized substrate to O2. Some oxidases are metal-containing enzymes, for example, tyrosinase and ascorbic acid oxidase contain copper; others, such as glucose oxidase, are flavoproteins.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A separate prediction tool was used to confine the conserved residues to fine tuned signature patterns prevalent in all multi-copper oxidases. The consensus pattern of multicopper oxidases signature 1 was: G-x-[FYW]-x-[LIVMFYW]-x-[CST]-x-{PR}-{K}-x(2)-{S}-x-{LFH}-G-[LM]-x(3) [LIVMFYW].
Diphenyleneiodonium chloride (DPI, an inhibitor for NADPH oxidase signaling pathway), Cell Counting Kit-8, TRI-Reagent, and Hoechst 33342 were from Sigma (St.
Recently, it was suggested that the ROS released from gp91phox NADPH oxidase, expressed in neutrophils, play a vital role in the regulation of ovulation and the estrous cycle [4].
NADPH oxidase consists of a family of seven members: NOX1, NOX2, NOX3, NOX4, NOX5, DUOX1, and DUOX2 (16).
Key Words: Glutamate oxidase Hypocrea jecorina Enzyme production L-glutamate Nessler reagent.
Jan, "Detoxification of phenols and aromatic amines from polluted wastewater by using phenol oxidases," Journal of Scientific and Industrial Research, vol.
Krause, "The NOX family of ROS-generating NADPH oxidases: physiology and pathophysiology," Physiological Reviews, vol.
ROS were generated by normal respiration of cells and by xanthine oxidase (XOD), nicotinamide adenine dinucleotidephosphate (NADPH) oxidase, glucose oxidase, cyclooxygenase (COX), and nitric oxide synthase (NOS), all of which were found in the hypertension (Nishiyama et al.
Krause, "The NOX family of RO-generating NADPH oxidases: physiology and pathophysiology," Physiological Reviews, vol.
We studied the activity of two oxidases, glucose oxidase and galactose oxidase, along with the activity of [beta]-galactosidase in the temperature range from 4 to 38.6 [degrees]C with the help of a fibreoptic oxygen sensor.