Cited by 91Metal-Catalyzed Oxygenation MechanismsRedox biology and oxidative stressNeutrophil, Myeloperoxidase and Oxidative Mechanisms

Reactions of Bovine Liver Catalase with Superoxide Radicals and Hydrogen Peroxide

Lardinois, Olivier M.·1995·Free Radical Research

Abstract

The oxidized intermediates generated upon exposure of bovine liver catalase to hydrogen peroxide (H2O2) and superoxide radical (O2-) fluxes were examined with UV-visible spectrophotometry. H2O2 and O2- were generated by means of glucose/glucose oxidase and xanthine/xanthine oxidase systems. Serial overlay of absorption spectra in the Soret (350-450 nm) and visible (450-700 nm) regions showed that three oxidized intermediates, namely Compounds I, II and III, can be observed upon exposure of catalase to enzymatically generated H2O2 and O2-. Compound I is formed during the reaction of native enzyme with H2O2 and disappears in two ways: (i) via the catalytic reaction with H2O2 to restore native catalase and (ii) via the reaction with O2- to form Compound II. At low H2O2 concentrations (< 4.8 x 10(-9) M H2O2), Compound II reverts towards the native state mainly in a direct one-step reaction, whereas at higher H2O2 concentrations the pathway of Compound II back to the native enzyme involves Compound III. Formation of the latter from Compound II and H2O2 is irreversible and the rate constant of this reaction is 6.1 +/- 0.2 x 10(4) M-1 s-1. The formation of Compound III through the direct reaction of O2- with native enzyme has also been observed. Depending on the experimental conditions, the inactivation of catalase by O2- can be due to accumulation of Compound II ("slow" inhibition) or to the formation of Compound III ("rapid" inhibition) part of which leads to a dead end product. Formation of Compound III and of this dead end product are responsible for the irreversible inactivation in presence of an excess of H2O2.

Integrity signals

Registry

Crossref · 10.3109/10715769509147544

Cites

62 of 62 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?

  • The catalase reaction proceeds in two steps: reduction of the first H2O2 molecule forms oxyferryl species (FeIVO), and the second H2O2 molecule reduces FeIVO to O2, H2O, and free enzyme.

    “The reaction proceeds in two steps; the first step involves the reduction of the first molecule of H2O2 accompanied by the formation of oxyferryl species (FeIVO) and in the course of the second step, the FeIVO complex is reduced by the second molecule of H2O2 to O2, and H2O molecules and free enzyme (Lardinois 1995; Nandi et al. 2019)14and15”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lardinois, O. M.
Affiliations
UCLouvain (BE)
Corresponding author
Lardinois, Olivier M.
Venue
Free Radical Research
Published
1995-01
Volume
22
Issue
3
Pages
251-274
ISSN
  • 1029-2470 (ISSN-L)
  • 1071-5762
OpenAlex
W2149817242
Cited by
91
References
62
Citations by year
2026: 2 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 1 · 2020: 1 · 2019: 6 · 2018: 2 · 2017: 3 · 2015: 2 · 2014: 3 · 2013: 3 · 2012: 4
FWCI
2.08
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Research (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Access to Libraries (submittedVersion)
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
Keywords
catalase, superoxide, hydrogen peroxide, enzyme inactivation, irreversible inactivation, compound I, compound II, compound III, hydrogen peroxide catalysis, bovine liver
MeSH terms
Animals, Catalase, Cattle, Free Radicals, Hydrogen Peroxide, Liver

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