Cited by 951Protein Tyrosine PhosphatasesRedox biology and oxidative stressProtein Kinase Regulation and GTPase Signaling

Redox regulation of protein tyrosine phosphatase 1B involves a sulphenyl-amide intermediate

Salmeen, Annette, Andersen, Jannik N., Myers, Michael P., Meng, Tzu-Ching, Hinks, John A., Tonks, Nicholas K., Barford, David·2003·Nature

Abstract

The second messenger hydrogen peroxide is required for optimal activation of numerous signal transduction pathways, particularly those mediated by protein tyrosine kinases. One mechanism by which hydrogen peroxide regulates cellular processes is the transient inhibition of protein tyrosine phosphatases through the reversible oxidization of their catalytic cysteine, which suppresses protein dephosphorylation. Here we describe a structural analysis of the redox-dependent regulation of protein tyrosine phosphatase 1B (PTP1B), which is reversibly inhibited by oxidation after cells are stimulated with insulin and epidermal growth factor. The sulphenic acid intermediate produced in response to PTP1B oxidation is rapidly converted into a previously unknown sulphenyl-amide species, in which the sulphur atom of the catalytic cysteine is covalently linked to the main chain nitrogen of an adjacent residue. Oxidation of PTP1B to the sulphenyl-amide form is accompanied by large conformational changes in the catalytic site that inhibit substrate binding. We propose that this unusual protein modification both protects the active-site cysteine residue of PTP1B from irreversible oxidation to sulphonic acid and permits redox regulation of the enzyme by promoting its reversible reduction by thiols.

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Crossref · 10.1038/nature01680

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Authors
Salmeen, A., Andersen, J. N., Myers, M. P., Meng, T.-C., Hinks, J. A., Tonks, N. K., & Barford, D.
Affiliations
  • Institute of Cancer Research (GB)
  • Cold Spring Harbor Laboratory (US)
Corresponding author
Barford, David
Venue
Nature
Published
2003-06
Volume
423
Issue
6941
Pages
769-773
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2109734459
Cited by
951
References
26
Citations by year
2026: 11 · 2025: 17 · 2024: 32 · 2023: 40 · 2022: 32 · 2021: 27 · 2020: 30 · 2019: 37 · 2018: 31 · 2017: 41 · 2016: 31 · 2015: 43 · 2014: 42 · 2013: 63 · 2012: 46
FWCI
18.88
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
Cancer Research UK
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
PTP1B, redox regulation, hydrogen peroxide, protein dephosphorylation, insulin signaling, epidermal growth factor, conformational change, substrate binding, thiol reduction, protein oxidation
MeSH terms
Amides, Binding Sites, Cysteine, Epidermal Growth Factor, Insulin, Models, Molecular, Oxidation-Reduction, Phosphorylation, Protein Binding, Protein Conformation, Receptor, Insulin, Serine, Sulfenic Acids, Protein Tyrosine Phosphatases, Amino Acid Substitution, Protein Tyrosine Phosphatase, Non-Receptor Type 1

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