期刊
CELL
卷 133, 期 2, 页码 280-291出版社
CELL PRESS
DOI: 10.1016/j.cell.2008.02.032
关键词
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资金
- Howard Hughes Medical Institute Funding Source: Medline
- NIGMS NIH HHS [GM62207, R01 GM062207, R01 GM062207-07] Funding Source: Medline
In budding yeast, key meiotic events such as DNA replication, recombination, and the meiotic divisions are controlled by Clb cyclin-dependent kinases (Clb-CDKs). Using a novel synchronization procedure, we have characterized the activity of these Clb-CDKs and observed a surprising diversity in their regulation during the meiotic divisions. Clb1-CDK activity is restricted to meiosis I, and Clb3-CDK activity to meiosis II, through 5'UTR-mediated translational control of its transcript. The analysis of cells inappropriately producing Clb3-CDKs during meiosis I furthermore defines Clb3 as an inhibitor of the meiosis I chromosome segregation program. Our results demonstrate an essential role for Clb-CDK regulation in establishing the meiotic chromosome segregation pattern.
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