Cited by 333Redox biology and oxidative stressSulfur Compounds in BiologyAdvanced Fluorescence Microscopy Techniques

Monitoring disulfide bond formation in the eukaryotic cytosol

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Østergaard, Henrik, Tachibana, Christine, Winther, Jakob R.·2004·The Journal of Cell Biology

Abstract

Glutathione is the most abundant low molecular weight thiol in the eukaryotic cytosol. The compartment-specific ratio and absolute concentrations of reduced and oxidized glutathione (GSH and GSSG, respectively) are, however, not easily determined. Here, we present a glutathione-specific green fluorescent protein–based redox probe termed redox sensitive YFP (rxYFP). Using yeast with genetically manipulated GSSG levels, we find that rxYFP equilibrates with the cytosolic glutathione redox buffer. Furthermore, in vivo and in vitro data show the equilibration to be catalyzed by glutaredoxins and that conditions of high intracellular GSSG confer to these a new role as dithiol oxidases. For the first time a genetically encoded probe is used to determine the redox potential specifically of cytosolic glutathione. We find it to be −289 mV, indicating that the glutathione redox status is highly reducing and corresponds to a cytosolic GSSG level in the low micromolar range. Even under these conditions a significant fraction of rxYFP is oxidized.

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Crossref · 10.1083/jcb.200402120

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  • Protein-based redox probes have drawbacks due, in part, to their reliance on cellular Grxs and their lag-time to equilibrate with cellular GSSG.

    “Despite the advantage of the real-time values that can be tracked by these intracellular sensors, there may be other drawbacks of these protein-based probes due, in part, on their reliance on cellular Grxs and their lag-time to equilibrate with cellular GSSG (178, 319).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [319]

  • In yeast cells, a redox-sensitive yellow fluorescent protein (rxYFP) forms disulfide bonds in proportion to intracellular GSH redox potential.

    “In yeast cells, this has been accomplished by using a redox-sensitive yellow fluorescent protein (rxYFP) that forms disulfide bonds in proportion to intracellular GSH redox potential (319).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [319]

  • Equilibration of the rxYFP sensor with intracellular GSH:GSSG relies on intracellular glutaredoxin.

    “Using a series of genetically deficient yeast lines, it was shown that equilibration of the sensor with intracellular GSH:GSSG relies on intracellular Grx.”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [319]

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Authors
Østergaard, H., Tachibana, C., & Winther, J. R.
Affiliations
  • Carlsberg Laboratory (DK)
  • University of Washington (US)
Venue
The Journal of Cell Biology
Published
2004-07-26
Volume
166
Issue
3
Pages
337-345
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W1998049513
Cited by
333
References
49
Citations by year
2026: 6 · 2025: 12 · 2024: 16 · 2023: 8 · 2022: 10 · 2021: 11 · 2020: 10 · 2019: 17 · 2018: 16 · 2017: 19 · 2016: 15 · 2015: 17 · 2014: 22 · 2013: 16 · 2012: 22
FWCI
4.03
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Advanced Fluorescence Microscopy Techniques
Keywords
disulfide bond formation, glutathione, glutathione disulfide, glutaredoxin, yeast, thiol redox state
MeSH terms
Cystine, Cytosol, Disulfides, Glutathione, Oxidation-Reduction, Oxidoreductases, Proteins, Saccharomyces cerevisiae, Genes, Reporter, Glutaredoxins

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