Regulation of the protein disulfide proteome by mitochondria in mammalian cells
Open accessAbstract
The majority of protein disulfides in cells is considered an important inert structural, rather than a dynamic regulatory, determinant of protein function. Here, we show that some disulfides in proteins also are regulated by cell redox status with functional consequences. We find that reactive oxygen species (ROS) produced by mitochondria are actively used by cells to facilitate cell-surface protein disulfide formation, as well as folding and transport, in mammalian cells. Inhibition of mitochondrial ROS production suppresses protein disulfide formation and induces reductive stress, leading to dysfunction and retention (possibly in the Golgi, in part) of a group of cell-surface disulfide-containing proteins. Sparsely cultured cells produce less ROS than confluent cells do, which leads to decreased disulfide formation and decreased activity of a subgroup of disulfide-containing cell-surface receptors. These data support the concept of two subproteomes comprising the disulfide proteome, a structural group and a redox-sensitive regulatory group, with the latter having direct functional consequences for the cell.
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Mitochondrial ROS play a large role in maintaining the oxidative homeostasis of the proteome.
“Mitochondrial ROS play a large role in maintaining the oxidative homeostasis of the proteome as inhibition of mitochondrial ROS production drastically decreases the total number of cellular protein disulfide bonds 48.”
From Mitochondrial reactive oxygen species regulate cellular signaling and dictate biological outcomes (2010) · cites this paper as [48]
Inhibition of mitochondrial ROS production drastically decreases the total number of cellular protein disulfide bonds.
“inhibition of mitochondrial ROS production drastically decreases the total number of cellular protein disulfide bonds 48.”
From Mitochondrial reactive oxygen species regulate cellular signaling and dictate biological outcomes (2010) · cites this paper as [48]
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Self-citation
- Authors
- Yang, Y., Song, Y., & Loscalzo, J.
- Affiliations
- Brigham and Women's Hospital (US)
- Corresponding author
- Loscalzo, Joseph
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2007-06-26
- Volume
- 104
- Issue
- 26
- Pages
- 10813-10817
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC1904139
- OpenAlex
- W1988862712
- Cited by
- 129
- References
- 27
- Citations by year
- 2026: 5 · 2025: 3 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 6 · 2018: 8 · 2017: 8 · 2016: 4 · 2015: 7 · 2014: 13 · 2013: 10 · 2012: 8
- FWCI
- 2.92
- Type
- journal article
- Language
- en
- Update notices
- correction (2009-08-25)
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Education of the People's Republic of China
- National Institutes of Health (n01hv28178-12-0-0, HL55993, HL 58976, HL 61795, HV28178)
- National Heart, Lung, and Blood Institute (HL61795, HV-28178, HL58976, R01HL058976, P01HL081587, P01HL81587, N01-HV-028178, R01HL061795, P50HL055993, R37HL061795)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
- Keywords
- mitochondria, reactive oxygen species, redox regulation, cell surface proteins, protein folding, protein trafficking, reductive stress, Golgi retention, cell surface receptors, cell confluence, disulfide bond formation
- MeSH terms
- Animals, Cells, Disulfides, Mammals, Membrane Proteins, Mitochondria, Oxidation-Reduction, Reactive Oxygen Species, Oxidative Stress, Proteome
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