[Functional characteristics of the individual genomic condensin binding sites of Saccharomyces cerevisiae using minichromosome mitotic segregation stability model].

Proper chromatin compaction in mitosis (condensation) is required for equal chromosome distribution and precise genetic information inheritance. Protein complex named condensin is responsible for the mitotic condensation, it also individualizes chromosomes, and ensures chromatin separation between sister chromatids in mitosis as well as proper mitotic spindle tension. Mitotic condensin function depends on recognition of the specific binding sites on the chromosome. Mechanism of condensin binding on the individual sites of the mitotic chromosomes, as well as molecular anatomy of these sites remains to be unclear. Even less known is how condensin binding on the individual sites helps separating chromosomes in anaphase. In current paper using minichromosome test, we analyze seven individual condensin binding sites in Saccharomyces cerevisiae found in previous all-genome CHIP on CHIP screening in our lab. This approach allowed us to find out what was the individual contribution of condensin binding sites in securing mitotic stability of the minichromosomes.

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