ArticleDNA repair2021
Sequence context effects of replication of Fapy•dG in three mutational hot spot sequences of the p53 gene in human cells.
Article in DNA repair, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
12 citing papers in PubMed, 15 citations in OpenAlex.
- OGG1 and MUTYH DNA Glycosylases, the Dynamic Duo Against 8-Oxoguanine DNA Lesion: Structure, Regulation, and Novel Emerging Roles.Biomolecules · 2026Review
- A human high-fidelity DNA polymerase holoenzyme has a wide range of lesion bypass activities.Nucleic acids research · 2025Article
- Inhibition by 4-(4-Bromo-2-oxo-3Biochemistry · 2025Article
- A human high-fidelity DNA polymerase holoenzyme has a wide range of lesion bypass activities.bioRxiv : the preprint server for biology · 2024Article
- Promoter dependent RNA polymerase II bypass of the epimerizable DNA lesion, Fapy•dG and 8-Oxo-2'-deoxyguanosine.Nucleic acids research · 2024Article
- Biochemical and structural characterization of Fapy•dG replication by Human DNA polymerase β.Nucleic acids research · 2024Article
- Molecular Mechanism of RNA Polymerase II Transcriptional Mutagenesis by the Epimerizable DNA Lesion, Fapy·dG.Journal of the American Chemical Society · 2024Article
- Article
- 8-Oxo-2'-deoxyguanosine Replication in Mutational Hot Spot Sequences of theChemical research in toxicology · 2023Article
- Establishing Linkages Among DNA Damage, Mutagenesis, and Genetic Diseases.Chemical research in toxicology · 2022Review
- Structural Dynamics of a Common Mutagenic Oxidative DNA Lesion in Duplex DNA and during DNA Replication.Journal of the American Chemical Society · 2022Article
- Beyond the Lesion: Back to High Fidelity DNA Synthesis.Frontiers in molecular biosciences · 2021Review
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
Fapy•dG and 8-OxodGuo are formed in DNA from a common N7-dG radical intermediate by reaction with hydroxyl radical. Although cellular levels of Fapy•dG are often greater, its effects on replication are less well understood than those of 8-OxodGuo. In this study plasmid DNA containing Fapy•dG in three mutational hotspots of human cancers, codons 248, 249, and 273 of the p53 tumor suppressor gene, was replicated in HEK 293T cells. TLS efficiencies for the Fapy•dG containing plasmids varied from 72 to 89%, and were further reduced in polymerase-deficient cells. The mutation frequency (MF) of Fapy•dG ranged from 7.3 to 11.6%, with G→T and G→A as major mutations in codons 248 and 249 compared to primarily G→T in codon 273. Increased MF in hPol ι-, hPol κ-, and hPol ζ-deficient cells suggested that these polymerases more frequently insert the correct nucleotide dC opposite Fapy•dG, whereas decreased G→A in codons 248 and 249 and reduction of all mutations in codon 273 in hPol λ-deficient cells indicated hPol λ's involvement in Fapy•dG mutagenesis. In vitro kinetic analysis using isolated translesion synthesis polymerases and hPol λ incompletely corroborated the mutagenesis experiments, indicating codependence on other proteins in the cellular milieu. In conclusion, Fapy•dG mutagenesis is dependent on the DNA sequence context, but its bypass by the TLS polymerases is largely error-free.
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