Cited by 369Mitochondrial Function and PathologyCoenzyme Q10 studies and effectsRedox biology and oxidative stress

Superoxide generation by complex III: From mechanistic rationales to functional consequences

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Bleier, Lea, Dröse, Stefan·2013·Biochimica et Biophysica Acta (BBA) - Bioenergetics

Abstract

Apart from complex I (NADH:ubiquinone oxidoreductase) the mitochondrial cytochrome bc1 complex (complex III; ubiquinol:cytochrome c oxidoreductase) has been identified as the main producer of superoxide and derived reactive oxygen species (ROS) within the mitochondrial respiratory chain. Mitochondrial ROS are generally linked to oxidative stress, aging and other pathophysiological settings like in neurodegenerative diseases. However, ROS produced at the ubiquinol oxidation center (center P, Qo site) of complex III seem to have additional physiological functions as signaling molecules during cellular processes like the adaptation to hypoxia. The molecular mechanism of superoxide production that is mechanistically linked to the electron bifurcation during ubiquinol oxidation is still a matter of debate. Some insight comes from extensive kinetic studies with mutated complexes from yeast and bacterial cytochrome bc1 complexes. This review is intended to bridge the gap between those mechanistic studies and investigations on complex III ROS in cellular signal transduction and highlights factors that impact superoxide generation. This article is part of a Special Issue entitled: Respiratory complex III and related bc complexes.

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Authors
Bleier, L., & Dröse, S.
Affiliations
Goethe University Frankfurt (DE)
Corresponding author
Dröse, Stefan
Venue
Biochimica et Biophysica Acta (BBA) - Bioenergetics
Publisher
Elsevier BV
Published
2013-11
Volume
1827
Issue
11-12
Pages
1320-1331
ISSN
0005-2728 (ISSN-L)
OpenAlex
W2222326255
Cited by
369
References
186
Citations by year
2026: 15 · 2025: 31 · 2024: 22 · 2023: 26 · 2022: 31 · 2021: 47 · 2020: 49 · 2019: 31 · 2018: 25 · 2017: 24 · 2016: 25 · 2015: 23 · 2014: 14 · 2013: 6
FWCI
1.25
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Bioenergetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (SFB815)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Coenzyme Q10 studies and effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
cytochrome bc1 complex, superoxide production, reactive oxygen species, mitochondrial respiratory chain, electron bifurcation, ubiquinol oxidation, Qo site, hypoxia adaptation, oxidative stress, ROS signaling
MeSH terms
Electron Transport, Heme, Humans, Models, Chemical, Models, Molecular, Protein Conformation, Superoxides, Electron Transport Complex III, Protein Subunits, Mitochondrial Membranes

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