Cited by 972DNA Repair MechanismsDNA and Nucleic Acid ChemistryEnzyme Structure and Function

Structural basis for recognition and repair of the endogenous mutagen 8-oxoguanine in DNA

Bruner, Steven D., Norman, Derek P. G., Verdine, Gregory L.·2000·Nature

Abstract

Spontaneous oxidation of guanine residues in DNA generates 8-oxoguanine (oxoG). By mispairing with adenine during replication, oxoG gives rise to a G x C --> T x A transversion, a frequent somatic mutation in human cancers. The dedicated repair pathway for oxoG centres on 8-oxoguanine DNA glycosylase (hOGG1), an enzyme that recognizes oxoG x C base pairs, catalysing expulsion of the oxoG and cleavage of the DNA backbone. Here we report the X-ray structure of the catalytic core of hOGG1 bound to oxoG x C-containing DNA at 2.1 A resolution. The structure reveals the mechanistic basis for the recognition and catalytic excision of DNA damage by hOGG1 and by other members of the enzyme superfamily to which it belongs. The structure also provides a rationale for the biochemical effects of inactivating mutations and polymorphisms in hOGG1. One known mutation, R154H, converts hOGG1 to a promutator by relaxing the specificity of the enzyme for the base opposite oxoG.

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Crossref · 10.1038/35002510

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Authors
Bruner, S. D., Norman, D. P. G., & Verdine, G. L.
Affiliations
Harvard University (US)
Corresponding author
Verdine, Gregory L.
Venue
Nature
Published
2000-02
Volume
403
Issue
6772
Pages
859-866
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1833739857
Cited by
972
References
47
Citations by year
2026: 22 · 2025: 31 · 2024: 30 · 2023: 25 · 2022: 34 · 2021: 34 · 2020: 30 · 2019: 28 · 2018: 33 · 2017: 29 · 2016: 28 · 2015: 39 · 2014: 41 · 2013: 44 · 2012: 41
FWCI
18.65
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
8-oxoguanine, OGG1, DNA glycosylase, DNA repair, base excision repair, transversions, guanine oxidation, DNA damage recognition, enzyme mechanism, X-ray crystal structure
MeSH terms
Amino Acid Sequence, Catalysis, Cloning, Molecular, Cytosine, DNA, DNA Repair, Escherichia coli, Guanine, Humans, Models, Molecular, Molecular Sequence Data, Mutagens, Mutation, Nucleic Acid Conformation, N-Glycosyl Hydrolases, Protein Binding, Protein Conformation, Structure-Activity Relationship, Sequence Alignment, Crystallography, X-Ray, Catalytic Domain, Escherichia coli Proteins, DNA-Formamidopyrimidine Glycosylase

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