Reactivity of Electrogenerated Superoxide Ion. I. Autoxidation of 9,10-Dihydroanthracene
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چکیده
منابع مشابه
Superoxide ion as active intermediate in the autoxidation of ascorbate by molecular oxygen. Effect of superoxide dismutase.
The oxidation of ascorbic acid by molecular oxygen was investigated by optical and magnetic resonance methods in the presence and in the absence of copper and iron complexes. The results show that one superoxide ion is generated for each oxidized molecule of ascorbate. The effect of addition of Cu,Zn superoxide dismutase, which at concentrations higher than 10(-7) M halves the oxidation rate, i...
متن کاملThe Generation of Superoxide Radical during the Autoxidation of Ferredoxins*
Clostridial and spinach ferredoxins, reduced enzymatically by the action of ferredoxin-TPN+ oxidoreductase, have been shown to carry out the univalent reduction of oxygen. The superoxide radicals, so generated, were detected by their ability to cause the oxidation of epinephrine to adrenochrome. Superoxide dismutase prevented the production of adrenochrome in these reaction mixtures, while havi...
متن کاملAutoxidation of ubiquinol-6 is independent of superoxide dismutase.
Ubiquinone (Q) is an essential, lipid soluble, redox component of the mitochondrial respiratory chain. Much evidence suggests that ubiquinol (QH2) functions as an effective antioxidant in a number of membrane and biological systems by preventing peroxidative damage to lipids. It has been proposed that superoxide dismutase (SOD) may protect QH2 form autoxidation by acting either directly as a su...
متن کاملThe Generation of Superoxide Radical during the Autoxidation of Ferredoxins*
Clostridial and spinach ferredoxins, reduced enzymatically by the action of ferredoxin-TPN+ oxidoreductase, have been shown to carry out the univalent reduction of oxygen. The superoxide radicals, so generated, were detected by their ability to cause the oxidation of epinephrine to adrenochrome. Superoxide dismutase prevented the production of adrenochrome in these reaction mixtures, while havi...
متن کاملGeneration of superoxide radical during autoxidation of hydroxylamine and an assay for superoxide dismutase.
Accompanying the autoxidation of hydroxylamine at pH 10.2, nitroblue tetrazolium was reduced and nitrite was produced in the presence of EDTA. The rate of at&oxidation was negligible below pH 8.0, but sharply increased with increasing pH. The reduction of nitroblue tetrazolium was inhibited by euperoxide dismutaee, indicating the participation of superoxide anion radical in the autoxidation. Hy...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1975
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.48.1471