Crossref journal-article
The Company of Biologists
Journal of Cell Science (237)
Abstract

ABSTRACT The exact duplication of a genome once per cell division is required of every proliferating cell. To achieve this goal, eukaryotes adopt a strategy that limits every replication origin to a single initiation event within a narrow window of the cell cycle by temporally separating the assembly of the pre-replication complex (pre-RC) from the initiation of DNA synthesis. A key component of the pre-RC is the hexameric MCM complex, which is also the presumed helicase of the growing forks. An elaborate mechanism recruits the MCM complex to replication origins, and a regulatory chain reaction converts the poised, but inactive, MCM complex into an enzymatically active helicase. A growing list of proteins, including Mcm10 and Cdt1, are involved in the recruitment process. Two protein kinases, the Cdc7-Dbf4 kinase (DDK) and the cyclin-dependent kinase (CDK), trigger a chain reaction that results in the phosphorylation of the MCM complex and finally in the initiation of DNA synthesis. A composite picture from recent studies suggests that DDK is recruited to the pre-RC during G1 phase but must wait until S phase to phosphorylate the MCM complex. CDK is required for the recruitment of Cdc45 and other downstream components of the elongation machinery.

Bibliography

Lei, M., & Tye, B. K. (2001). Initiating DNA synthesis: from recruiting to activating the MCM complex. Journal of Cell Science, 114(8), 1447–1454.

Authors 2
  1. Ming Lei (first)
  2. Bik K. Tye (additional)
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Dates
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Created 4 years, 4 months ago (April 24, 2021, 5:14 a.m.)
Deposited 1 year, 5 months ago (March 20, 2024, 7:57 p.m.)
Indexed 1 month, 3 weeks ago (July 7, 2025, 8:28 a.m.)
Issued 24 years, 4 months ago (April 15, 2001)
Published 24 years, 4 months ago (April 15, 2001)
Published Online 24 years, 4 months ago (April 15, 2001)
Published Print 24 years, 4 months ago (April 15, 2001)
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@article{Lei_2001, title={Initiating DNA synthesis: from recruiting to activating the MCM complex}, volume={114}, ISSN={1477-9137}, url={http://dx.doi.org/10.1242/jcs.114.8.1447}, DOI={10.1242/jcs.114.8.1447}, number={8}, journal={Journal of Cell Science}, publisher={The Company of Biologists}, author={Lei, Ming and Tye, Bik K.}, year={2001}, month=apr, pages={1447–1454} }