Cited by 3,455Redox biology and oxidative stressMetal-Catalyzed Oxygenation MechanismsGlutathione Transferases and Polymorphisms

Superoxide radical and superoxide dismutases

Fridovich, Irwin·1995·Annual Review of Biochemistry

Abstract

O2- oxidizes the [4Fe-4S] clusters of dehydratases, such as aconitase, causing-inactivation and release of Fe(II), which may then reduce H2O2 to OH- +OH.. SODs inhibit such HO. production by scavengingO2-, but Cu, ZnSODs, by virtue of a nonspecific peroxidase activity, may peroxidize spin trapping agents and thus give the appearance of catalyzing OH. production from H2O2. There is a glycosylated, tetrameric Cu, ZnSOD in the extracellular space that binds to acidic glycosamino-glycans. It minimizes the reaction of O2- with NO. E. coli, and other gram negative microorganisms, contain a periplasmic Cu, ZnSOD that may serve to protect against extracellular O2-. Mn(III) complexes of multidentate macrocyclic nitrogenous ligands catalyze the dismutation of O2- and are being explored as potential pharmaceutical agents. SOD-null mutants have been prepared to reveal the biological effects of O2-. SodA, sodB E. coli exhibit dioxygen-dependent auxotrophies and enhanced mutagenesis, reflecting O2(-)-sensitive biosynthetic pathways and DNA damage. Yeast, lacking either Cu, ZnSOD or MnSOD, are oxygen intolerant, and the double mutant was hypermutable and defective in sporulation and exhibited requirements for methionine and lysine. A Cu, ZnSOD-null Drosophila exhibited a shortened lifespan.

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Crossref · 10.1146/annurev.bi.64.070195.000525

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281 of 281 references verified0 citation errors · 0 not checkable

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  • MnSOD is most abundant in the mitochondria, whereas Cu,Zn-SOD predominates in the cytoplasm.

    “MnSOD is most abundant in the mitochondria, whereas Cn, Zn-SOD predominates in the cytoplasm [11].”
  • Mammalian cells contain three forms of SOD: Mn-SOD, cytosolic Cu,Zn-SOD and extracellular Cu,Zn-SOD.

    “Mammalian cells contain three forms of SOD: Mn-SOD, cytosolic Cu, Zn-SOD and extracellular Cu, Zn-SOD.”
  • In some assays, O2 reduces tetranitro methane, cytochrome c or nitro tetrazolium blue, and in others it oxidises epinephrine, tiron pyrogallol or 6-hydroxydopamine.

    “Thus, in some assays, Oz reduces tetranitro methane [11], cytochrome c or nitro tetrazolium blue [100], and in others it oxidises epinephrine, tiron pyrogallol or 6-hydroxydopamine [101,102], Figure 38.”

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Authors
Fridovich, I.
Affiliations
Duke Medical Center (US)
Corresponding author
Fridovich, Irwin
Venue
Annual Review of Biochemistry
Published
1995-06
Volume
64
Issue
1
Pages
97-112
ISSN
  • 0066-4154 (ISSN-L)
  • 1545-4509
OpenAlex
W2114443210
Cited by
3,455
References
281
Citations by year
2026: 66 · 2025: 75 · 2024: 79 · 2023: 90 · 2022: 97 · 2021: 108 · 2020: 90 · 2019: 106 · 2018: 115 · 2017: 124 · 2016: 121 · 2015: 139 · 2014: 166 · 2013: 161 · 2012: 157
FWCI
15.61
Type
journal article
Language
en
Open access
closed
Locations
  • Annual Review of Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
Keywords
superoxide, superoxide dismutase, Cu/Zn superoxide dismutase, Mn superoxide dismutase, [4Fe-4S] cluster, aconitase, hydroxyl radical generation, peroxidase activity, glycosaminoglycans, nitric oxide, Escherichia coli, soft drinks, sodB, auxotrophy, mutagenesis, DNA damage, yeast, Drosophila, lifespan, manganese complexes
MeSH terms
Animals, Carbohydrates, Escherichia coli, Humans, Mutation, Superoxides, Superoxide Dismutase, Hydroxyl Radical, Carbohydrate Metabolism

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