dismutation


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Related to dismutation: superoxide dismutase, Disproportionation reaction

dis·mu·ta·tion

(dis'myū-tā'shŭn),
A reaction involving a single substance but producing two products; for example, two molecules of acetaldehyde may react, producing an oxidation product (acetic acid) and a reduction product (ethyl alcohol).
References in periodicals archive ?
This reaction is five fold faster then the dismutation of superoxide by Superoxide dismutase (SOD) makes reduced bioavailability of NO for endothelial cells.
It is possible that bisulfite may also lead to further reactive sulfur species via the peroxidase activity of enzymes such as copper,zinc-superoxide dismutase (Cu, Zn-SOD), a metalloenzyme that catalyzes the dismutation of the superoxide anion into [O.
Three types of SODs are found in bacteria, two are cofactored by manganese or iron and are located in the cytosol and catalyse dismutation of ([O.
In the continued presence of the heavy metal, the superoxide anions formed can then combine with protons in the dismutation reaction generating hydrogen peroxide in the process.
SOD activity was determined according to the disproportionating rate of superoxide radicals generated from xanthine/xanthine oxidase system, and one unit (1 U) is defined as the amount of enzyme needed to exhibit 50% dismutation of the superoxide radical.
Superoxide dismutase is considered as the first line of defense against deleterious effects of oxy radicals in the cell by catalyzing the dismutation of superoxide radicals to hydrogen peroxide and molecular oxygen [32],superoxide that is one of the main reactive oxygen species in the cell.
The role of SOD is to accelerate the dismutation of the toxic superoxide radical, produced during oxidative energy processes, to hydrogen peroxide and molecular oxygen.
These 3 enzymes share a common detoxification pathway in which SOD2 first catalyzes the dismutation of the superoxide anion to hydrogen peroxide and oxygen.
The function of SOD is to catalyze the dismutation reaction of [O.
Manganese(II) catalyzes the bicarbonate-dependent oxidation of amino acids by hydrogen peroxide and the amino acid-facilitated dismutation of hydrogen peroxide.
One unit of enzyme is defined as the amount of enzyme needed to induce 50% dismutation of the superoxide radical.
The innocuous addition of a hydrolyzed protein additive (usually containing amino acids) to enhance the skin feel attributes of a formulation that also contains extracts of the ginger family may cause the ketones to react with amino acids and result in chemical dismutation of both ingredients.