Role of Polo-like Kinase CDC5 in Programming Meiosis I Chromosome Segregation

Overview

Journal Science

Specialty Science

Date 2003 Mar 29

PMID 12663816

Citations 146

Authors

Brian H Lee

Angelika Amon

Affiliations

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Abstract

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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