
Meiosis-specific cohesin, required for the linking of the sister chromatids, plays a critical role in various chromosomal events during meiotic prophase I, such as chromosome morphogenesis and dynamics, as well as recombination. Rad61/Wpl1 (Wapl in other organisms) negatively regulates cohesin functions. In this study, we show that meiotic chromosome axes are shortened in the budding yeast rad61/wpl1 mutant, suggesting that Rad61/Wpl1 negatively regulates chromosome axis compaction. Rad61/Wpl1 is required for efficient resolution of telomere clustering during meiosis I, indicating a positive effect of Rad61/Wpl1 on the cohesin function required for telomere dynamics. Additionally, we demonstrate distinct activities of Rad61/Wpl1 during the meiotic recombination, including its effects on the efficient processing of intermediates. Thus, Rad61/Wpl1 both positively and negatively regulates various cohesin-mediated chromosomal processes during meiosis.
Recombination, Genetic, Saccharomyces cerevisiae Proteins, Chromosomal Proteins, Non-Histone, Saccharomyces cerevisiae, Genome Integrity, Repair and Replication, Telomere, Meiosis, Mutation, Chromosomes, Fungal
Recombination, Genetic, Saccharomyces cerevisiae Proteins, Chromosomal Proteins, Non-Histone, Saccharomyces cerevisiae, Genome Integrity, Repair and Replication, Telomere, Meiosis, Mutation, Chromosomes, Fungal
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