Controle de qualidade no início da replicação do DNA eucariótico: mero acaso, fortuita necessidade ou design inteligente???

quinta-feira, janeiro 19, 2012

Quality control in the initiation of eukaryotic DNA replication

John F. X. Diffley*

Author Affiliations

Cancer Research UK London Research Institute, Clare Hall Laboratories, South Mimms, Herts EN6 3LD, UK


Origins of DNA replication must be regulated to ensure that the entire genome is replicated precisely once in each cell cycle. In human cells, this requires that tens of thousands of replication origins are activated exactly once per cell cycle. Failure to do so can lead to cell death or genome rearrangements such as those associated with cancer. Systems ensuring efficient initiation of replication, while also providing a robust block to re-initiation, play a crucial role in genome stability. In this review, I will discuss some of the strategies used by cells to ensure once per cell cycle replication and provide a quantitative framework to evaluate the relative importance and efficiency of individual pathways involved in this regulation.

DNA replication, cell cycle, S phase


One contribution of 16 to a Theme Issue ‘The cell cycle’.

This journal is © 2011 The Royal Society


This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.