Cited by 111Redox biology and oxidative stressNitric Oxide and Endothelin EffectsSulfur Compounds in Biology

Evidence against Stable Protein S-Nitrosylation as a Widespread Mechanism of Post-translational Regulation

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Wolhuter, Kathryn, Whitwell, Harry J., Switzer, Christopher H., Burgoyne, Joseph R., Timms, John F., Eaton, Philip·2018·Molecular Cell

Abstract

S-nitrosation, commonly referred to as S-nitrosylation, is widely regarded as a ubiquitous, stable post-translational modification that directly regulates many proteins. Such a widespread role would appear to be incompatible with the inherent lability of the S-nitroso bond, especially its propensity to rapidly react with thiols to generate disulfide bonds. As anticipated, we observed robust and widespread protein S-nitrosation after exposing cells to nitrosocysteine or lipopolysaccharide. Proteins detected using the ascorbate-dependent biotin switch method are typically interpreted to be directly regulated by S-nitrosation. However, these S-nitrosated proteins are shown to predominantly comprise transient intermediates leading to disulfide bond formation. These disulfides are likely to be the dominant end effectors resulting from elevations in nitrosating cellular nitric oxide species. We propose that S-nitrosation primarily serves as a transient intermediate leading to disulfide formation. Overall, we conclude that the current widely held perception that stable S-nitrosation directly regulates the function of many proteins is significantly incorrect.

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  • HOCl plays a major role in the microbicidal actions of neutrophils.

    “This highly reactive oxidizing and chlorinating agent plays a major role in the microbicidal actions of neutrophils (15, 1021).”

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Authors
Wolhuter, K., Whitwell, H. J., Switzer, C. H., Burgoyne, J. R., Timms, J. F., & Eaton, P.
Affiliations
  • St Thomas' Hospital (GB)
  • University College London (GB)
Corresponding author
Eaton, Philip
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2018-02
Volume
69
Issue
3
Pages
438-450.e5
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2784924795
Cited by
111
References
35
Citations by year
2026: 8 · 2025: 13 · 2024: 9 · 2023: 10 · 2022: 8 · 2021: 21 · 2020: 18 · 2019: 10 · 2018: 14
FWCI
5.60
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion, cc-by)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion, cc-by)
  • Spiral (Imperial College London) (submittedVersion, cc-by)
Funders
  • British Heart Foundation (BHF RG/12/12/29872)
  • Department of Health and Social Care
  • Medical Research Council (MR/L009684/1)
  • European Research Council (339095)
  • Guy's and St Thomas' NHS Foundation Trust
  • University College London Hospitals NHS Foundation Trust
  • National Institute for Health and Care Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
Keywords
S-nitrosylation, post-translational modification, nitric oxide, disulfide bond formation, lipopolysaccharide, transient intermediates, protein regulation
MeSH terms
Cysteine, Disulfides, Humans, Nitric Oxide, Oxidation-Reduction, Protein Processing, Post-Translational, Proteins, Sulfhydryl Compounds, Nitrosation, S-Nitrosothiols, Proteomics, Proteolysis

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