ArticleThe journal of physical chemistry. A2011
Reaction of superoxide radical with quinone molecules.
Article in The journal of physical chemistry. A, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Review
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- Free Radical Inhibition Using a Water-Soluble Curcumin Complex, NDS27: Mechanism Study Using EPR, Chemiluminescence, and Docking.Antioxidants (Basel, Switzerland) · 2024Article
- Structural Features of CytochromeInternational journal of molecular sciences · 2021Review
- Efficient photoelectrocatalytic performance of beta-cyclodextrin/graphene composite and effect of ClRSC advances · 2021Article
- A magnetic-void-porous MnFeEnvironmental science and ecotechnology · 2021Article
- Photochemical reactions between 1,4-benzoquinone and OEnvironmental science and pollution research international · 2020Article
- AIEE Active Nanoassemblies of Pyrazine Based Organic Photosensitizers as Efficient Metal-Free Supramolecular Photoredox Catalytic Systems.Scientific reports · 2019Article
- The different paths and potential risks of photo(-electro)-catalytic degradation for rhodamine B in water by graphene/TiOEnvironmental science and pollution research international · 2018Article
- A novel electrocatalytic approach for effective degradation of Rh-B in water using carbon nanotubes and agarose.Environmental science and pollution research international · 2018Article
- Insight into the Mechanism of Action of Marine Cytotoxic Thiazinoquinones.Marine drugs · 2017Article
- Analysis of a Functional Dimer Model of Ubiquinol Cytochrome c Oxidoreductase.Biophysical journal · 2017Article
- Molecular mechanisms of superoxide production by complex III: a bacterial versus human mitochondrial comparative case study.Biochimica et biophysica actaReview
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Authors and funding
3 authors.
Funding
Abstract
When the superoxide radical O(2)(•-) is generated on reaction of KO(2) with water in dimethyl sulfoxide, the decay of the radical is dramatically accelerated by inclusion of quinones in the reaction mix. For quinones with no or short hydrophobic tails, the radical product is a semiquinone at much lower yield, likely indicating reduction of quinone by superoxide and loss of most of the semiquinone product by disproportionation. In the presence of ubiquinone-10, a different species (I) is generated, which has the EPR spectrum of superoxide radical. However, pulsed EPR shows spin interaction with protons in fully deuterated solvent, indicating close proximity to the ubinquinone-10. We discuss the nature of species I, and possible roles in the physiological reactions through which ubisemiquinone generates superoxide by reduction of O(2) through bypass reactions in electron transfer chains.
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