Journal
CHROMOSOMA
Volume 117, Issue 4, Pages 333-338Publisher
SPRINGER
DOI: 10.1007/s00412-008-0152-x
Keywords
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Funding
- Cancer Research UK Funding Source: Medline
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Ordered progression through the cell cycle is essential to maintain genomic stability, and fundamental to this is ubiquitin-mediated proteolysis. In particular, the anaphase-promoting complex/cyclosome (APC/C) ubiquitin ligase destabilises specific regulators at defined times in the cycle to ensure that each round of DNA replication is followed by cell division. Thus, the proper regulation of the APC/C is crucial in each cell cycle. There are several APC/C regulators that restrict its activity to specific cell cycle phases, and amongst these the early mitotic inhibitor 1 (Emi1) protein has recently come to prominence. Emi1 has been proposed to control APC/C in early mitosis; however, recent evidence questions this role. In this review we discuss new evidence that indicates that Emi1 is essential to restrict APC/C activity in interphase and, by doing so, ensure the proper coordination between DNA replication and mitosis.
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