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Wrestling off RAD51: a novel role for RecQ helicases

✍ Scribed by Leonard Wu

Book ID
101711542
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
195 KB
Volume
30
Category
Article
ISSN
0265-9247

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✦ Synopsis

Abstract

Homologous recombination (HR) is essential for the accurate repair of DNA double‐strand breaks and damaged replication forks. However, inappropriate or aberrant HR can also result in genome rearrangements. The maintenance of cell viability is, therefore, a careful balancing act between the benefits of HR (the error‐free repair of DNA strand breaks) and the potential detrimental outcomes of HR (chromosomal rearrangements). Two papers have recently provided a mechanistic insight into how HR may be tempered by RecQ helicases to prevent genome instability and diseases that are a consequence of this, such as cancer.1,2 BioEssays 30:291–295, 2008. © 2008 Wiley Periodicals, Inc.

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The RecQ family of DNA helicases have been shown to be important for the maintenance of genomic integrity in all organisms analysed to date. In human cells, representatives of this family include the proteins defective in the cancer predisposition disorder Bloom's syndrome and the premature ageing c