Book chapter
Modulation of DNA Damage and DNA Repair in Chromatin
Progress in Nucleic Acid Research and Molecular Biology, pp.227-255
Elsevier Science & Technology
1998
Handle:
https://hdl.handle.net/2376/113949
PMID: 9932456
Abstract
DNA is packaged in the highly compact and dynamic structure of chromatin in eukaryotic cells. It is generally accepted that DNA processing events in the nucleus, such as transcription, replication, recombination, and repair, are restricted by this packaging. For some processes (e.g., transcription), the chromatin fiber is “preset” in a more open structure to allow access of proteins to specific regions of DNA within this structural hierarchy. These regions contain modified nucleosomes that accommodate a less compact state of chromatin and allow access to specific regions of DNA. DNA repair proteins, however, must access DNA lesions in all structural domains of chromatin after sudden insult to the genome. Damaged DNA must be recognized, removed, and replaced by repair enzymes at all levels of chromatin packaging. Therefore, the modulation of DNA damage and its repair in chromatin is crucial to our understanding of the fate of potential mutagenic and carcinogenic lesions in DNA. In this review, we discuss the modulation of DNA damage and DNA repair by chromatin structure, and the modulation of chromatin structure by these events.
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Details
- Title
- Modulation of DNA Damage and DNA Repair in Chromatin
- Creators
- Michael J SmerdonAntonio Conconi
- Publication Details
- Progress in Nucleic Acid Research and Molecular Biology, pp.227-255
- Academic Unit
- Molecular Biosciences, School of
- Publisher
- Elsevier Science & Technology
- Identifiers
- 99900547907801842
- Language
- English
- Resource Type
- Book chapter