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Genes 2013, 4(3), 388-434; doi:10.3390/genes4030388
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Replication Checkpoint: Tuning and Coordination of Replication Forks in S Phase

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Received: 7 May 2013 / Revised: 30 July 2013 / Accepted: 2 August 2013 / Published: 19 August 2013
(This article belongs to the Special Issue DNA Replication)
View Full-Text   |   Download PDF [2237 KB, 20 August 2013; original version 19 August 2013]   |   Browse Figures

Abstract

Checkpoints monitor critical cell cycle events such as chromosome duplication and segregation. They are highly conserved mechanisms that prevent progression into the next phase of the cell cycle when cells are unable to accomplish the previous event properly. During S phase, cells also provide a surveillance mechanism called the DNA replication checkpoint, which consists of a conserved kinase cascade that is provoked by insults that block or slow down replication forks. The DNA replication checkpoint is crucial for maintaining genome stability, because replication forks become vulnerable to collapse when they encounter obstacles such as nucleotide adducts, nicks, RNA-DNA hybrids, or stable protein-DNA complexes. These can be exogenously induced or can arise from endogenous cellular activity. Here, we summarize the initiation and transduction of the replication checkpoint as well as its targets, which coordinate cell cycle events and DNA replication fork stability.
Keywords: checkpoint; replication; Mec1/ATR; Tel1/ATM; kinases checkpoint; replication; Mec1/ATR; Tel1/ATM; kinases
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Hustedt, N.; Gasser, S.M.; Shimada, K. Replication Checkpoint: Tuning and Coordination of Replication Forks in S Phase. Genes 2013, 4, 388-434.

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