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Cited by 444

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

In vivo mutagenesis by O6-methylguanine built into a unique site in a viral genome.

Open access
Loechler, E L, Green, C L, Essigmann, J M·1984·Proceedings of the National Academy of Sciences

Abstract

The mutagenicity of O6-methylguanine (O6MeGua), a chemical carcinogen-DNA adduct, has been studied in vivo by using a single-stranded M13mp8 genome in which a single O6MeGua residue was positioned in the unique recognition site for the restriction endonuclease Pst I. Transformation of Escherichia coli MM294A cells with this vector gave progeny phage, of which 0.4% were mutated in their Pst I site. In a separate experiment, cellular levels of O6MeGua-DNA methyltransferase (an O6MeGua-repair protein) were depleted by treatment with N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) prior to viral DNA uptake. In these cells, the mutation frequency due to O6MeGua increased with increasing MNNG dose (the highest mutation frequency observed was 20%). DNA sequence analysis of 60 mutant genomes revealed that O6MeGua induced exclusively G-to-A transitions.

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Metadata

Authors
Loechler, E. L., Green, C. L., & Essigmann, J. M.
Venue
Proceedings of the National Academy of Sciences
Published
1984-10
Volume
81
Issue
20
Pages
6271-6275
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2026195203
Cited by
444
References
1
FWCI
5.60
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: In vivo mutagenesis by O6-methylguanine built into a unique site in a viral genome. https://app.cochat.ai/papers/10.1073/pnas.81.20.6271
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Loechler, E. L., Green, C. L., & Essigmann, J. M. (1984). In vivo mutagenesis by O6-methylguanine built into a unique site in a viral genome. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.81.20.6271

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