Biological role of condensin in chromosome condensation

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Chromosome condensation is a basic cellular process that ensure the faithful segregation of chromosomes during cell division. This process is required not only for shrinking the length of chromosome arms, but also for resolving entanglements between sister-chromatids that created during DNA replication. In addition, chromosome condensation plays an important role in maintenance of the stability of repetitive structure in genome such as rDNA repeat. Studies in the past decade have demonstrated that chromosome condensation is mainly achieved by condensin, a multi-subunit protein complex widely conserved from yeast to human. In this study, we showed that condensin contributes for transcriptional-and recombinational-repressions within the rDNA repeat in Saccharomyces cerevisiae.