Role of Polo-like kinase CDC5 in programming meiosis I chromosome segregation

被引:194
|
作者
Lee, BH [1 ]
Amon, A [1 ]
机构
[1] MIT, Ctr Canc Res, Howard Hughes Med Inst, Cambridge, MA 02139 USA
关键词
D O I
10.1126/science.1081846
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Meiosis is a specialized cell division in which two chromosome segregation phases follow a single DNA replication phase. The budding yeast Polo-like kinase Cdc5 was found to be instrumental in establishing the meiosis I chromosome segregation program. Cdc5 was required to phosphorylate and remove meiotic cohesin from chromosomes. Furthermore, in the absence of CDC5 kinetochores were bioriented during meiosis I, and Mam1, a protein essential for coorientation, failed to associate with kinetochores. Thus, sister-kinetochore coorientation and chromosome segregation during meiosis I are coupled through their dependence on CDC5.
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页码:482 / 486
页数:5
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