Cited by 310Mitochondrial Function and PathologyBiochemical Acid Research StudiesRedox biology and oxidative stress

The 2-oxoacid dehydrogenase complexes in mitochondria can produce superoxide/hydrogen peroxide at much higher rates than complex I

Open access
Quinlan, Casey L., Goncalves, Renata L.S., Hey-Mogensen, Martin, Yadava, Nagendra, Bunik, Victoria I., Brand, Martin D.·2014·Journal of Biological Chemistry

Abstract

Several flavin-dependent enzymes of the mitochondrial matrix utilize NAD(+) or NADH at about the same operating redox potential as the NADH/NAD(+) pool and comprise the NADH/NAD(+) isopotential enzyme group. Complex I (specifically the flavin, site IF) is often regarded as the major source of matrix superoxide/H2O2 production at this redox potential. However, the 2-oxoglutarate dehydrogenase (OGDH), branched-chain 2-oxoacid dehydrogenase (BCKDH), and pyruvate dehydrogenase (PDH) complexes are also capable of considerable superoxide/H2O2 production. To differentiate the superoxide/H2O2-producing capacities of these different mitochondrial sites in situ, we compared the observed rates of H2O2 production over a range of different NAD(P)H reduction levels in isolated skeletal muscle mitochondria under conditions that favored superoxide/H2O2 production from complex I, the OGDH complex, the BCKDH complex, or the PDH complex. The rates from all four complexes increased at higher NAD(P)H/NAD(P)(+) ratios, although the 2-oxoacid dehydrogenase complexes produced superoxide/H2O2 at high rates only when oxidizing their specific 2-oxoacid substrates and not in the reverse reaction from NADH. At optimal conditions for each system, superoxide/H2O2 was produced by the OGDH complex at about twice the rate from the PDH complex, four times the rate from the BCKDH complex, and eight times the rate from site IF of complex I. Depending on the substrates present, the dominant sites of superoxide/H2O2 production at the level of NADH may be the OGDH and PDH complexes, but these activities may often be misattributed to complex I.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.m113.545301

Cites

87 of 87 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. [34]34. Nicholls, D. G., and Ferguson, S. J. (2013) Bioenergetics 4 , p. 107, Academic Press Inc., London
  2. [65]65. Cheshchevic, V., Janssen, A. J. M., Dremza, I. K., Zavodnik, I. B., and Bunik, V. I. (2010) The OGDHC-exerted control of mitochondrial respiration is increased under energy demand. In Mitochondrial Physiology. The Many Functions of the Organism in Our Cells. (Renner-Sattler, K., and Gnaiger, E., eds.) pp 76-77, Steiger Druck GmbH, Axams, Austria

Cited by

Sorted by citations

Authors
Quinlan, C. L., Goncalves, R. L. S., Hey-Mogensen, M., Yadava, N., Bunik, V. I., & Brand, M. D.
Affiliations
  • Buck Institute for Research on Aging (US)
  • Lomonosov Moscow State University (RU)
Corresponding author
Brand, Martin D.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2014-03
Volume
289
Issue
12
Pages
8312-8325
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1986366581
Cited by
310
References
87
Citations by year
2026: 11 · 2025: 18 · 2024: 14 · 2023: 26 · 2022: 21 · 2021: 41 · 2020: 18 · 2019: 27 · 2018: 21 · 2017: 31 · 2016: 30 · 2015: 33 · 2014: 19
FWCI
15.45
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (TL1 AG032116)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
superoxide production, hydrogen peroxide production, 2-oxoglutarate dehydrogenase, pyruvate dehydrogenase complex, complex I, mitochondrial matrix, flavoenzyme, skeletal muscle mitochondria, reactive oxygen species
MeSH terms
Animals, Female, Hydrogen Peroxide, Ketoglutarate Dehydrogenase Complex, Mitochondria, Muscle, NAD, Oxidation-Reduction, Pyruvate Dehydrogenase Complex, Superoxides, Rats, Wistar, Muscle, Skeletal, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review