Cited by 179Mitochondrial Function and PathologyRedox biology and oxidative stressHeat shock proteins research

Mitochondrial Disulfide Bond Formation Is Driven by Intersubunit Electron Transfer in Erv1 and Proofread by Glutathione

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Bien, Melanie, Longen, Sebastian, Wagener, Nikola, Chwalla, Ilona, Herrmann, Johannes M., Riemer, Jan·2010·Molecular Cell

Abstract

The disulfide relay system in the intermembrane space of mitochondria is of crucial importance for mitochondrial biogenesis. Major players in this pathway are the oxidoreductase Mia40 that oxidizes substrates and the sulfhydryl oxidase Erv1 that reoxidizes Mia40. To analyze in detail the mechanism of this oxidative pathway and the interplay of its components, we reconstituted the complete process in vitro using purified cytochrome c, Erv1, Mia40, and Cox19. Here, we demonstrate that Erv1 dimerizes noncovalently and that the subunits of this homodimer cooperate in intersubunit electron exchange. Moreover, we show that Mia40 promotes complete oxidation of the substrate Cox19. The efficient formation of disulfide bonds is hampered by the formation of long-lived, partially oxidized intermediates. The generation of these side products is efficiently counteracted by reduced glutathione. Thus, our findings suggest a role for a glutathione-dependent proofreading during oxidative protein folding by the mitochondrial disulfide relay.

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Crossref · 10.1016/j.molcel.2010.01.017

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  • GSH prevents overoxidation of redox-active thiols during disulfide bond formation within the mitochondrial intermembrane space.

    “GSH plays an important role in this process by preventing the overoxidation of redox-active thiols during disulfide bond formation within the intermembrane space (40, 292).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [40]

  • Erv1 shuttles electrons from Mia40 to cytochrome c of the ETC to maintain Mia40's oxidized state.

    “Erv1 serves to shuttle electrons from Mia40 to cytochrome c of the ETC in order to maintain its oxidized state (10, 40, 105, 292).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [40]

  • The FAD-containing sulfhydryl oxidase Erv1 maintains the intermembrane protein Mia40 in an oxidized form.

    “A crucial component of this system is the FAD-containing sulfhydryl oxidase Erv1, which maintains the intermembrane protein Mia40 in an oxidized form (40, 391).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [40]

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Authors
Bien, M., Longen, S., Wagener, N., Chwalla, I., Herrmann, J. M., & Riemer, J.
Affiliations
  • University of Kaiserslautern (DE)
  • Ludwig-Maximilians-Universität München (DE)
Corresponding author
  • Herrmann, Johannes M.
  • Riemer, Jan
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2010-02
Volume
37
Issue
4
Pages
516-528
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2076363488
Cited by
179
References
30
Citations by year
2026: 4 · 2025: 7 · 2024: 7 · 2023: 9 · 2022: 7 · 2021: 14 · 2020: 5 · 2019: 8 · 2018: 10 · 2017: 13 · 2016: 5 · 2015: 13 · 2014: 16 · 2013: 16 · 2012: 27
FWCI
7.94
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
Erv1, Mia40, cytochrome c, protein dimerization, oxidative protein folding, glutathione, proofreading, mitochondrial biogenesis, in vitro reconstitution
MeSH terms
Mitochondrial Precursor Protein Import Complex Proteins, Amino Acid Sequence, Disulfides, Electron Transport, Glutathione, Mitochondria, Molecular Sequence Data, Oxidation-Reduction, Protein Binding, Saccharomyces cerevisiae, Sequence Alignment, Conserved Sequence, Protein Folding, Molecular Chaperones, Protein Subunits, Mitochondrial Proteins, Saccharomyces cerevisiae Proteins, Mitochondrial Membrane Transport Proteins, Oxidoreductases Acting on Sulfur Group Donors, Protein Multimerization

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