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G3 (Bethesda). 2012 Oct;2(10):1161-8. doi: 10.1534/g3.112.003327. Epub 2012 Oct 1.

A genetic screen to discover pathways affecting cohesin function in Schizosaccharomyces pombe identifies chromatin effectors.

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1
Stowers Institute for Medical Research, Kansas City, Missouri 64110, USA.

Abstract

Cohesion, the force that holds sister chromatids together from the time of DNA replication until separation at the metaphase to anaphase transition, is mediated by the cohesin complex. This complex is also involved in DNA damage repair, chromosomes condensation, and gene regulation. To learn more about the cellular functions of cohesin, we conducted a genetic screen in Schizosaccharomyces pombe with two different cohesin mutants (eso1-G799D and mis4-242). We found synthetic negative interactions with deletions of genes involved in DNA replication and heterochromatin formation. We also found a few gene deletions that rescued the growth of eso1-G799D at the nonpermissive temperature, and these genes partially rescue the lagging chromosome phenotype. These genes are all chromatin effectors. Overall, our screen revealed an intimate association between cohesin and chromatin.

PMID:
23050226
PMCID:
PMC3464108
DOI:
10.1534/g3.112.003327
[Indexed for MEDLINE]
Free PMC Article
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