Cited by 147Mitochondrial Function and PathologyEnzyme Structure and FunctionCoenzyme Q10 studies and effects

Identification of the Mitochondrial ND3 Subunit as a Structural Component Involved in the Active/Deactive Enzyme Transition of Respiratory Complex I

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Galkin, Alexander, Meyer, Björn, Wittig, Ilka, Karas, Michael, Schägger, Hermann, Vinogradov, Andrei, Brandt, Ulrich·2008·Journal of Biological Chemistry

Abstract

Mitochondrial complex I (NADH:ubiquinone oxidoreductase) undergoes reversible deactivation upon incubation at 30-37 degrees C. The active/deactive transition could play an important role in the regulation of complex I activity. It has been suggested recently that complex I may become modified by S-nitrosation under pathological conditions during hypoxia or when the nitric oxide:oxygen ratio increases. Apparently, a specific cysteine becomes accessible to chemical modification only in the deactive form of the enzyme. By selective fluorescence labeling and proteomic analysis, we have identified this residue as cysteine-39 of the mitochondrially encoded ND3 subunit of bovine heart mitochondria. Cysteine-39 is located in a loop connecting the first and second transmembrane helix of this highly hydrophobic subunit. We propose that this loop connects the ND3 subunit of the membrane arm with the PSST subunit of the peripheral arm of complex I, placing it in a region that is known to be critical for the catalytic mechanism of complex I. In fact, mutations in three positions of the loop were previously reported to cause Leigh syndrome with and without dystonia or progressive mitochondrial disease.

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  • Cys39 of ND3 has been shown to become exposed under hypoxia or lack of NADH that result in low complex I activity due to the active-deactive transition.

    “Notably, one of these, Cys39 of the ND3 subunit, has been shown to become exposed under conditions of hypoxia or lack of NADH that result in low complex I activity due to the active-deactive transition26–28.”

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Research works printed but not linked: 3

  1. Estabrook, R. W., Tyler, D. D., Gonze, J., and Peterson, J. A (1968) in Flavines and Flavoproteins, pp. 268 -279, University of Tokyo Press, To- kyo, Japan
  2. Blow, D. M. (1971) in The Enzymes (Boyer, P. D., ed), Vol. 3, pp. 185-212, Academic Press, New York
  3. Kamp, R. M. (1986) in Advanced Methods in Protein Microsequence Anal- ysis (Wittmann-Liebold, B., Salnikow, J., and Erdmann, V. A., eds), pp. 8 -20, Springer-Verlag, Berlin

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Authors
Galkin, A., Meyer, B., Wittig, I., Karas, M., Schägger, H., Vinogradov, A., & Brandt, U.
Affiliations
  • Goethe University Frankfurt (DE)
  • Lomonosov Moscow State University (RU)
Corresponding author
Brandt, Ulrich
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2008-07
Volume
283
Issue
30
Pages
20907-20913
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2030408645
Cited by
147
References
42
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2023: 3 · 2022: 10 · 2021: 6 · 2020: 15 · 2019: 12 · 2018: 13 · 2017: 11 · 2016: 11 · 2015: 10 · 2014: 12 · 2013: 12 · 2012: 4
FWCI
1.92
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Publication Server of Goethe University Frankfurt am Main (Goethe University Frankfurt) (submittedVersion, cc-by)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Funders
  • Deutsche Forschungsgemeinschaft ((EXC 115).)
  • National Institutes of Health
  • Fogarty International Center (#R03 TW07825, R03TW007825)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Coenzyme Q10 studies and effects
Keywords
mitochondrial complex I, enzyme inactivation, S-nitrosylation, Leigh syndrome, mitochondrial disease, bovine heart mitochondria
MeSH terms
Animals, Catalysis, Cattle, Chymotrypsin, Cysteine, Electrophoresis, Polyacrylamide Gel, Fluorescent Dyes, Models, Biological, Myocardium, Nitric Oxide, Oxygen, Mass Spectrometry, Mitochondrial Diseases, Proteomics, Electron Transport Complex I

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