Reference: Araki H (2010) Cyclin-dependent kinase-dependent initiation of chromosomal DNA replication. Curr Opin Cell Biol 22(6):766-71

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Abstract


Cyclin-dependent kinase (CDK) is essential for the initiation of chromosomal DNA replication. CDK phosphorylates two yeast replication proteins, Sld2 and Sld3, both of which bind to another replication protein, Dpb11 when phosphorylated. These interactions are essential and are the minimal requirements for CDK activation of chromosomal DNA replication. This review discusses how these phosphorylation-dependent interactions initiate DNA replication through the formation of the pre-loading complex (pre-LC) and its interaction with phosphorylated Sld3 on replication origins. These steps are further regulated by multisite phosphorylation of Sld2. Sld3, on the other hand, must be turned over to reassociate with origins. Pol ɛ functions as a component of the pre-LC as well as a replicative DNA polymerase at replication forks.

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Journal Article | Review
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Araki H
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