Abstract

The reactive superoxide radical, O 2 - , formerly of concern only to radiation chemists and radiobiologists, is now understood to be a normal product of the biological reduction of molecular oxygen. An unusual family of enzymes, the superoxide dismutases, protect against the deleterious actions of this radical by catalyzing its dismutation to hydrogen peroxide plus oxygen.

Keywords

RadicalHydrogen peroxideSuperoxide dismutaseReactive oxygen speciesSuperoxideOxygenChemistrySuperoxide radicalMolecular oxygenActive oxygenEnzymeBiochemistryOrganic chemistry

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Superoxide Dismutase

An enzyme which catalyzes the dismutation of superoxide radicals (O2·- + O2·- + 2H+ → O2 + H2O2) has been purified by a simple procedure from bovine erythrocytes. This enzyme, c...

1969 Journal of Biological Chemistry 12696 citations

Publication Info

Year
1978
Type
article
Volume
201
Issue
4359
Pages
875-880
Citations
3330
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Closed

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Cite This

Irwin Fridovich (1978). The Biology of Oxygen Radicals. Science , 201 (4359) , 875-880. https://doi.org/10.1126/science.210504

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DOI
10.1126/science.210504