The replication fork's five degrees of freedom, their failure and genome rearrangements

Genome rearrangements are important in pathology and evolution. The thesis of this review is that the genome is in peril when replication forks stall, and stalled forks are normally rescued by error-free mechanisms. Failure of error-free mechanisms results in large-scale chromosome changes called gr...

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Bibliographic Details
Published inCurrent opinion in cell biology Vol. 21; no. 6; pp. 778 - 784
Main Authors Weinert, T, Kaochar, S, Jones, H, Paek, A, Clark, AJ
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.12.2009
Subjects
Animals
Cell Cycle Proteins - genetics
Cell Cycle Proteins - metabolism
Chromosomes - metabolism
DNA Breaks, Double-Stranded
DNA Replication
Gene Rearrangement - physiology
Genome
Genomic Instability
Humans
Internal Medicine
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Summary:Genome rearrangements are important in pathology and evolution. The thesis of this review is that the genome is in peril when replication forks stall, and stalled forks are normally rescued by error-free mechanisms. Failure of error-free mechanisms results in large-scale chromosome changes called gross chromosomal rearrangements, GCRs, by the aficionados. In this review we discuss five error-free mechanisms a replication fork may use to overcome blockage, mechanisms that are still poorly understood. We then speculate on how genome rearrangements may occur when such mechanisms fail. Replication fork recovery failure may be an important feature of the oncogenic process. (Feedback to the authors on topics discussed herein is welcome.)
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ISSN:0955-0674
1879-0410
DOI:10.1016/j.ceb.2009.10.004