Cited by 77Metal-Catalyzed Oxygenation MechanismsRedox biology and oxidative stressMetalloenzymes and iron-sulfur proteins

Reductive elimination of superoxide: Structure and mechanism of superoxide reductases

Pinto, Ana Filipa, Rodrigues, João V., Teixeira, Miguel·2010·Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics

Abstract

Superoxide anion is among the deleterious reactive oxygen species, towards which all organisms have specialized detoxifying enzymes. For quite a long time, superoxide elimination was thought to occur through its dismutation, catalyzed by Fe, Cu, and Mn or, as more recently discovered, by Ni-containing enzymes. However, during the last decade, a novel type of enzyme was established that eliminates superoxide through its reduction: the superoxide reductases, which are spread among anaerobic and facultative microorganisms, from the three life kingdoms. These enzymes share the same unique catalytic site, an iron ion bound to four histidines and a cysteine that, in its reduced form, reacts with superoxide anion with a diffusion-limited second order rate constant of approximately 10(9) M(-1) s(-1). In this review, the properties of these enzymes will be thoroughly discussed.

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Crossref · 10.1016/j.bbapap.2009.10.011

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  • Based on the number of metal centres, there are two types of Fe-SORs: neelaredoxins (1Fe-SORs) and desulfoferrodoxins (2Fe-SOR).

    “Based on the number of metal centres, there are two types of Fe-SORs: neelaredoxins (1Fe-SORs) and desulfoferrodoxins (2Fe-SOR) [89].”

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Authors
Pinto, A. F., Rodrigues, J. V., & Teixeira, M.
Affiliations
Universidade Nova de Lisboa (PT)
Corresponding author
Teixeira, Miguel
Venue
Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics
Publisher
Elsevier BV
Published
2010-02
Volume
1804
Issue
2
Pages
285-297
ISSN
1570-9639 (ISSN-L)
OpenAlex
W2034538188
Cited by
76
References
69
Citations by year
2026: 2 · 2025: 1 · 2024: 18 · 2023: 6 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 4 · 2014: 9 · 2013: 5 · 2012: 5
FWCI
0.10
Type
journal article
Language
en
Open access
closed
Locations
  • Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics (publishedVersion)
  • PubMed (publishedVersion)
Funders
Fundação para a Ciência e a Tecnologia
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Metalloenzymes and iron-sulfur proteins
Keywords
superoxide reductase, superoxide, reductive elimination, reactive oxygen species scavenging, iron-sulfur clusters, enzyme mechanism, enzyme structure, anaerobic microorganisms, diffusion-controlled kinetics
MeSH terms
Amino Acid Sequence, Animals, Humans, Molecular Sequence Data, Oxidoreductases, Superoxides, Sequence Homology, Amino Acid

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