The Generation of Superoxide Radical during the Autoxidation of Hemoglobin
Hara P. Misra,Irwin Fridovich +1 more
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TLDR
Clostridial and spinach ferredoxins, reduced enzymatically by the action of ferredoxin-TPN+ oxidoreductase, have been shown to carry out the univalent reduction of oxygen.About:
This article is published in Journal of Biological Chemistry.The article was published on 1971-11-25 and is currently open access. It has received 1036 citations till now. The article focuses on the topics: Autoxidation & Methemoglobin.read more
Citations
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Journal ArticleDOI
The Role of Superoxide Anion in the Autoxidation of Epinephrine and a Simple Assay for Superoxide Dismutase
Hara P. Misra,Irwin Fridovich +1 more
TL;DR: It is proposed that the autoxidation of epinephrine proceeds by at least two distinct pathways, only one of which is a free radical chain reaction involving O2- and hence inhibitable by superoxide dismutase.
Journal ArticleDOI
Superoxide Radical and Superoxide Dismutases
TL;DR: O2- oxidizes the [4Fe-4S] clusters of dehydratases, such as aconitase, causing-inactivation and release of Fe(II), which may then reduce H2O2 to OH- +OH..
Journal ArticleDOI
The biology of oxygen radicals
TL;DR: The reactive superoxide radical, O2-, formerly of concern only to radiation chemists and radiobiologists, is now understood to be a normal product of the biological reduction of molecular oxygen.
Journal ArticleDOI
The mitochondrial generation of hydrogen peroxide. General properties and effect of hyperbaric oxygen.
Alberto Boveris,Britton Chance +1 more
TL;DR: It is postulated that in addition to the well-known flavin reaction, formation of H( 2)O(2) may be due to interaction with an energy-dependent component of the respiratory chain at the cytochrome b level.
Journal ArticleDOI
Generation of Superoxide Radical during Autoxidation of Hydroxylamine and an Assay for Superoxide Dismutase
TL;DR: Hydrogen peroxide stimulated the autoxidation and superoxide dismutase inhibited the hydrogen peroxide-induced oxidation, results which suggest the participation of hydrogenperoxide in autoxidated and in the generation of superoxide radical.
References
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Disc electrophoresis – ii method and application to human serum proteins*
TL;DR: The technique of disc electrophoresis has been presented, including a discussion of the technical variables with special reference to the separation of protein fractions of normal human serum.
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Superoxide Dismutase AN ENZYMIC FUNCTION FOR ERYTHROCUPREIN (HEMOCUPREIN)
Joe M. McCord,Irwin Fridovich +1 more
TL;DR: The demonstration that O2·- can reduce ferricytochrome c and tetranitromethane, and that superoxide dismutase, by competing for the superoxide radicals, can markedly inhibit these reactions, is demonstrated.
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Superoxide dismutase: Improved assays and an assay applicable to acrylamide gels☆
TL;DR: The staining procedure for localizing superoxide dismutase on polyacrylamide electrophoretograms has been applied to extracts obtained from a variety of sources and could thus be assayed either in crude extracts or in purified protein fractions.
Journal ArticleDOI
The Role of Superoxide Anion in the Autoxidation of Epinephrine and a Simple Assay for Superoxide Dismutase
Hara P. Misra,Irwin Fridovich +1 more
TL;DR: It is proposed that the autoxidation of epinephrine proceeds by at least two distinct pathways, only one of which is a free radical chain reaction involving O2- and hence inhibitable by superoxide dismutase.
Journal ArticleDOI
The Reduction of Cytochrome c by Milk Xanthine Oxidase
Joe M. McCord,Irwin Fridovich +1 more
TL;DR: The data are consistent with the conclusion that xanthine oxidase generates an unstable reduced form of oxygen, presumably the superoxide anion, and that this radical is the agent which directly reduces cytochrome c and initiates the sulfite-oxygen chain reaction.
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Superoxide Dismutase AN ENZYMIC FUNCTION FOR ERYTHROCUPREIN (HEMOCUPREIN)
Joe M. McCord,Irwin Fridovich +1 more
The Role of Superoxide Anion in the Autoxidation of Epinephrine and a Simple Assay for Superoxide Dismutase
Hara P. Misra,Irwin Fridovich +1 more