Journal
SCIENCE
Volume 303, Issue 5662, Pages 1367-1370Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1094220
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- NIGMS NIH HHS [GM62207] Funding Source: Medline
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During meiosis, two chromosome segregation phases follow a single round of DNA replication. We identified factors required to establish this specialized cell cycle by examining meiotic chromosome segregation in a collection of yeast strains lacking all nonessential genes. This analysis revealed Sgo1, Chl4, and Iml3 to be important for retaining centromeric cohesin until the onset of anaphase II. Consistent with this role, Sgo1 localizes to centromeric regions but dissociates at the onset of anaphase II. The screen described here provides a comprehensive analysis of the genes required for the meiotic cell cycle and identifies three factors important for the stepwise loss of sister chromatid cohesion.
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