Publication: Coupling morphogenesis to mitotic entry
Issued Date
2004-03-23
Resource Type
ISSN
00278424
Other identifier(s)
2-s2.0-12144286559
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Mahidol University
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SCOPUS
Bibliographic Citation
Proceedings of the National Academy of Sciences of the United States of America. Vol.101, No.12 (2004), 4124-4129
Suggested Citation
Krisada Sakchaisri, Satoshi Asano, Li Rong Yu, Mark J. Shulewitz, Chong J. Park, Jung Eun Park, Young Wook Cho, Timothy D. Veenstra, Jeremy Thorner, Kyung S. Lee Coupling morphogenesis to mitotic entry. Proceedings of the National Academy of Sciences of the United States of America. Vol.101, No.12 (2004), 4124-4129. doi:10.1073/pnas.0400641101 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/21833
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Title
Coupling morphogenesis to mitotic entry
Abstract
In eukaryotes, cyclin B-bound cyclin-dependent protein kinase 1 promotes mitotic entry but is held in check, in part, by Wee1 protein kinase. Timely mitotic entry in budding yeast requires inactivation of Swe1 (Wee1 ortholog). Perturbations of the septin collar at the bud neck lead to Swe1 stabilization, delaying the G2/M transition. Swe1 is recruited to the neck and hyperphosphorylated before ubiquitin-mediated degradation. Hsl1 kinase (Nim1 ortholog), a negative regulator of Wee1, is required for efficient Swe1 localization at the neck but seems not to phosphorylate Swe1. Here, we show that two other kinases targeted sequentially to the neck, Cla4/PAK and Cdc5/Polo, are responsible for stepwise phosphorylation and down-regulation of Swe1. This mechanism links assembly of a cellular structure to passage into mitosis.