Cited by 15Redox biology and oxidative stressGlutathione Transferases and PolymorphismsSulfur Compounds in Biology

The DOI matches its Crossref record; 69 of the 71 references it cites were found in a registry or an index.

Molecular basis for the enzymatic inactivity of class III glutaredoxin ROXY9 on standard glutathionylated substrates

Open access
Mrozek, Pascal, Grunewald, Stephan, Treffon, Katrin, Poschmann, Gereon, Rabe von Pappenheim, Fabian, Tittmann, Kai, Gatz, Christiane·2025·Nature Communications

Published version of a preprint

Abstract

Class I glutaredoxins (GRXs) are nearly ubiquitous proteins that catalyse the glutathione (GSH)-dependent reduction of mainly glutathionylated substrates. In land plants, a third class of GRXs has evolved (class III). Class III GRXs regulate the activity of TGA transcription factors through yet unexplored mechanisms. Here we show that Arabidopsis thaliana class III GRX ROXY9 is inactive as an oxidoreductase on widely used model substrates. Glutathionylation of the active site cysteine, a prerequisite for enzymatic activity, occurs only under highly oxidizing conditions established by the GSH/glutathione disulfide (GSSG) redox couple, while class I GRXs are readily glutathionylated even at very negative GSH/GSSG redox potentials. Thus, structural alterations in the GSH binding site leading to an altered GSH binding mode likely explain the enzymatic inactivity of ROXY9. This might have evolved to avoid overlapping functions with class I GRXs and raises questions of whether ROXY9 regulates TGA substrates through redox regulation.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/s41467-024-55532-z

Cites

69 of 69 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Flagged first, then by citations

2 of the 71 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Metadata

Authors
Mrozek, P., Grunewald, S., Treffon, K., Poschmann, G., Rabe von Pappenheim, F., Tittmann, K., & Gatz, C.
Affiliations
  • University of Göttingen (DE)
  • Düsseldorf University Hospital (DE)
  • Max Planck Institute for Multidisciplinary Sciences (DE)
Corresponding author
Gatz, Christiane
Venue
Nature Communications
Published
2025-01-11
Volume
16
Issue
1
Pages
589-589
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4406274885
Cited by
15
References
71
Citations by year
2026: 8 · 2025: 5
FWCI
3.89
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (publishedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Deutsche Forschungsgemeinschaft (GA330/25, GA330/27)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
Keywords
glutathionylation, oxidoreductase activity, TGA transcription factors, redox regulation, Arabidopsis thaliana, land plant evolution
MeSH terms
Cysteine, Glutathione, Oxidation-Reduction, Substrate Specificity, Arabidopsis, Glutathione Disulfide, Catalytic Domain, Arabidopsis Proteins, Glutaredoxins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review