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Updated: May 7, 2026

Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair
Published on: May 24, 2017
Nucleotide excision repair in eukaryotes
1Department of Pharmacological Sciences and Department of Chemistry, Stony Brook University, Stony Brook, New York 11974-3400.
Abstract:
Nucleotide excision repair (NER) is the main pathway used by mammals to remove bulky DNA lesions such as those formed by UV light, environmental mutagens, and some cancer chemotherapeutic adducts from DNA. Deficiencies in NER are associated with the extremely skin cancer-prone inherited disorder xeroderma pigmentosum. Although the core NER reaction and the factors that execute it have been known for some years, recent studies have led to a much more detailed understanding of the NER mechanism, how NER operates in the context of chromatin, and how it is connected to other cellular processes such as DNA damage signaling and transcription. This review emphasizes biochemical, structural, cell biological, and genetic studies since 2005 that have shed light on many aspects of the NER pathway.
Insights
Nucleotide excision repair (NER) removes bulky DNA damage in mammals. Recent studies reveal NER
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Nucleotide excision repair (NER) is crucial for removing DNA lesions from UV radiation, mutagens, and chemotherapy.
- Defects in NER are linked to xeroderma pigmentosum, a disorder causing extreme sun sensitivity and high skin cancer risk.
Purpose of the Study:
- To provide a detailed overview of the NER pathway.
- To highlight recent advancements in understanding NER mechanisms, chromatin interactions, and connections to other cellular processes.
Main Methods:
- Biochemical studies
- Structural analyses
- Cell biological experiments
- Genetic studies
Main Results:
- Elucidation of the core NER reaction and involved factors.
- Detailed insights into NER's operation within chromatin.
- Understanding NER's integration with DNA damage signaling and transcription.
Conclusions:
- Recent research has significantly advanced the understanding of the NER pathway.
- NER is a complex process intricately linked with chromatin regulation and cellular signaling.
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