Repair of DNA Double-Strand Breaks in Heterochromatin

DNA double-strand breaks (DSBs) are among the most damaging lesions in DNA, since, if not identified and repaired, they can lead to insertions, deletions or chromosomal rearrangements. DSBs can be in the form of simple or complex breaks, and may be repaired by one of a number of processes, the natur...

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Main Author: Watts, Felicity Z.
Format: Online
Language:English
Published: MDPI 2016
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5197957/
id pubmed-5197957
recordtype oai_dc
spelling pubmed-51979572017-01-04 Repair of DNA Double-Strand Breaks in Heterochromatin Watts, Felicity Z. Review DNA double-strand breaks (DSBs) are among the most damaging lesions in DNA, since, if not identified and repaired, they can lead to insertions, deletions or chromosomal rearrangements. DSBs can be in the form of simple or complex breaks, and may be repaired by one of a number of processes, the nature of which depends on the complexity of the break or the position of the break within the chromatin. In eukaryotic cells, nuclear DNA is maintained as either euchromatin (EC) which is loosely packed, or in a denser form, much of which is heterochromatin (HC). Due to the less accessible nature of the DNA in HC as compared to that in EC, repair of damage in HC is not as straightforward as repair in EC. Here we review the literature on how cells deal with DSBs in HC. MDPI 2016-12-16 /pmc/articles/PMC5197957/ /pubmed/27999260 http://dx.doi.org/10.3390/biom6040047 Text en © 2016 by the author; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Watts, Felicity Z.
spellingShingle Watts, Felicity Z.
Repair of DNA Double-Strand Breaks in Heterochromatin
author_facet Watts, Felicity Z.
author_sort Watts, Felicity Z.
title Repair of DNA Double-Strand Breaks in Heterochromatin
title_short Repair of DNA Double-Strand Breaks in Heterochromatin
title_full Repair of DNA Double-Strand Breaks in Heterochromatin
title_fullStr Repair of DNA Double-Strand Breaks in Heterochromatin
title_full_unstemmed Repair of DNA Double-Strand Breaks in Heterochromatin
title_sort repair of dna double-strand breaks in heterochromatin
description DNA double-strand breaks (DSBs) are among the most damaging lesions in DNA, since, if not identified and repaired, they can lead to insertions, deletions or chromosomal rearrangements. DSBs can be in the form of simple or complex breaks, and may be repaired by one of a number of processes, the nature of which depends on the complexity of the break or the position of the break within the chromatin. In eukaryotic cells, nuclear DNA is maintained as either euchromatin (EC) which is loosely packed, or in a denser form, much of which is heterochromatin (HC). Due to the less accessible nature of the DNA in HC as compared to that in EC, repair of damage in HC is not as straightforward as repair in EC. Here we review the literature on how cells deal with DSBs in HC.
publisher MDPI
publishDate 2016
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5197957/
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