Cited by 190Metalloenzymes and iron-sulfur proteinsMitochondrial Function and PathologyRedox biology and oxidative stress

Superoxide-Driven Aconitase FE-S Center Cycling

Gardner, Paul R.·1997·Bioscience Reports

Abstract

O−2 produced by the autoxidation of respiratory chain electron carriers, and other cellular reductants, inactivates bacterial and mammalian iron-sulfur-containing (de)hydratases including the citric acid cycle enzyme aconitase. Release of the solvent-exposed iron atom and oxidation of the [4Fe-4S]2+ cluster accompanies loss of catalytic activity. Rapid reactivation is achieved by iron-sulfur cluster reduction and Fe2+ insertion. Inactivation-reactivation is a dynamic and cyclical process which modulates aconitase and (de)hydratase activities in Escherichia coli and mammalian cells. The balance of inactive and active aconitase provides a sensitive measure of the changes in steady-statO−2 levels occuring in living cells and mitochondria under stress conditions. Aconitases are also inactivated by other oxidants including O2, H2O2, NO., and ONOO− which are associated with inflammation, hyperoxia and other pathophysiological conditions. Loss of aconitase activity during oxidant stress may impair energy production, and the liberation of reactive iron may further enhance oxidative damage. Iron-sulfur center cycling may also serve adaptive functions by modulating gene expression or by signaling metabolic quiescence.

Integrity signals

Registry

Crossref · 10.1023/a:1027383100936

Cites

53 of 53 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gardner, P. R.
Affiliations
Cincinnati Children's Hospital Medical Center (US)
Corresponding author
Gardner, Paul R.
Venue
Bioscience Reports
Published
1997-02-01
Volume
17
Issue
1
Pages
33-42
ISSN
  • 0144-8463 (ISSN-L)
  • 1573-4935
OpenAlex
W73773881
Cited by
190
References
53
Citations by year
2026: 5 · 2025: 6 · 2024: 6 · 2023: 5 · 2022: 4 · 2021: 5 · 2020: 8 · 2019: 3 · 2018: 7 · 2017: 8 · 2016: 7 · 2015: 6 · 2014: 8 · 2013: 8 · 2012: 9
FWCI
8.91
Type
journal article
Language
en
Open access
closed
Locations
  • Bioscience Reports (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • American Lung Association
  • National Institutes of Health
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Metalloenzymes and iron-sulfur proteins
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
aconitase, iron-sulfur clusters, [4Fe-4S] cluster, superoxide, autoxidation, enzyme inactivation, reactivation, oxidative stress, reactive oxygen species, mitochondrial iron metabolism, Escherichia coli, metabolic quiescence, oxidative damage
MeSH terms
Aconitate Hydratase, Animals, Humans, Iron-Sulfur Proteins, Superoxides

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