Cited by 1,237DNA Repair MechanismsCarcinogens and Genotoxicity AssessmentEffects of Radiation Exposure

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

DNA repair in an active gene: Removal of pyrimidine dimers from the DHFR gene of CHO cells is much more efficient than in the genome overall

Bohr, V·1985·Cell

Abstract

DNA repair was measured in the dihydrofolate reductase gene in Chinese hamster ovary cells, amplified for the gene, by quantitating pyrimidine dimers with a specific UV-endonuclease. More than two thirds of the dimers had been removed from a 14.1 kb restriction fragment of the gene by 26 hr after irradiation (20 J/m2), while little removal was detected in fragments upstream of the gene and only 15% were removed from the genome overall. This suggests that damage processing can vary according to function or activity of affected sequences, which has general implications for correlations of DNA repair with survival and mutagenesis. Perhaps preferential repair of vital sequences facilitates UV-resistance of these cells despite low overall repair levels.

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Crossref · 10.1016/0092-8674(85)90150-3

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34 of 34 references verified0 citation errors · 0 not checkable

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  • XPA is an indispensable factor for both transcription-coupled NER and global genome NER.

    “XPA is an indispensable factor both for transcription-coupled NER and global genome NER [7], [8].”
  • Two subpathways of NER exist: transcription-blocking lesions in the transcribed strand of active genes are repaired quickly by transcription-coupled NER, whereas the rest of the genome, including the nontranscribed strand of active genes, is repaired more slowly by global genome NER.

    “Two subpathways of NER exist: transcription-blocking lesions in the transcribed strand (TS) of active genes are repaired quickly by transcription-coupled NER (TC-NER), whereas the rest of the genome, including the nontranscribed strand (NTS) of active genes, is repaired more slowly by global genome NER (GG-NER) (8, 33, 34, 44, 54).”

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Metadata

Authors
Bohr, V
Affiliations
Stanford University (US)
Corresponding author
Bohr, V
ORCID
Bohr, V
Venue
Cell
Publisher
Elsevier BV
Published
1985-02
Volume
40
Issue
2
Pages
359-369
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1984353960
Cited by
1,237
References
34
Citations by year
2026: 11 · 2025: 17 · 2024: 15 · 2023: 14 · 2022: 12 · 2021: 17 · 2020: 18 · 2019: 11 · 2018: 18 · 2017: 13 · 2016: 23 · 2015: 9 · 2014: 24 · 2013: 24 · 2012: 22
FWCI
15.13
Type
journal article
Language
en
Open access
closed
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (GM 09901)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
DNA repair, pyrimidine dimers, dihydrofolate reductase gene, UV-induced DNA damage, UV endonuclease, UV resistance, CHO cells, mutagenesis, cell survival
MeSH terms
Animals, Base Sequence, Cell Line, Cell Survival, Cricetulus, DNA Repair, Endodeoxyribonucleases, Female, Cricetinae, Multienzyme Complexes, N-Glycosyl Hydrolases, Pyrimidine Dimers, Tetrahydrofolate Dehydrogenase

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