The Swi/Snf chromatin remodeling complex has been previously demonstrated to be required for transcriptional activation and repression of a subset of genes in Saccharomyces cerevisiae. In this work we demonstrate that Swi/Snf is also required for repression of RNA polymerase II-dependent transcription in the ribosomal DNA (rDNA) locus (rDNA silencing). This repression appears to be independent of both Sir2 and Set1, two factors known to be required for rDNA silencing. In contrast to many other rDNA silencing mutants that have elevated levels of rDNA recombination, snf2Delta mutants have a significantly decreased level of rDNA recombination. Additional studies have demonstrated that Swi/Snf is also required for silencing of genes near telomeres while having no detectable effect on silencing of HML or HMR.
机构:
Inst Curie, Unite Genet Somat, F-75248 Paris, FranceInst Curie, Unite Genet Somat, F-75248 Paris, France
Masliah-Planchon, Julien
Bieche, Ivan
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Inst Curie, Unite Pharmacogen, F-75248 Paris, France
Univ Paris 05, Fac Sci Pharmaceut & Biol, Sorbonne Paris Cite, F-75006 Paris, FranceInst Curie, Unite Genet Somat, F-75248 Paris, France
Bieche, Ivan
Guinebretiere, Jean-Marc
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Inst Curie, Dept Biol Tumeurs, F-75248 Paris, FranceInst Curie, Unite Genet Somat, F-75248 Paris, France
Guinebretiere, Jean-Marc
Bourdeaut, Franck
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Inst Curie, Dept Pediat, F-75248 Paris, FranceInst Curie, Unite Genet Somat, F-75248 Paris, France
Bourdeaut, Franck
Delattre, Olivier
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Inst Curie, Unite Genet Somat, F-75248 Paris, France
Inst Curie, INSERM, U830, Unite Genet & Biol Canc, F-75248 Paris, FranceInst Curie, Unite Genet Somat, F-75248 Paris, France
Delattre, Olivier
ANNUAL REVIEW OF PATHOLOGY: MECHANISMS OF DISEASE, VOL 10,
2015,
10
: 145
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171