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Reference: Kunkel TA and Burgers PM (2008) Dividing the workload at a eukaryotic replication fork. Trends Cell Biol 18(11):521-7

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Abstract

Efficient and accurate replication of the eukaryotic nuclear genome requires DNA polymerases (Pols) alpha, delta and epsilon. In all current replication fork models, polymerase alpha initiates replication. However, several models have been proposed for the roles of Pol delta and Pol epsilon in subsequent chain elongation and the division of labor between these two polymerases is still unclear. Here, we revisit this issue, considering recent studies with diagnostic mutator polymerases that support a model wherein Pol epsilon is primarily responsible for copying the leading-strand template and Pol delta is primarily responsible for copying the lagging-strand template. We also review earlier studies in light of this model and then consider prospects for future investigations of possible variations on this simple division of labor.

Reference Type
Journal Article | Review | Research Support, N.I.H., Extramural | Research Support, N.I.H., Intramural
Authors
Kunkel TA, Burgers PM
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