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Cell. 1999 Apr 30;97(3):299-311.

Ordered recruitment of transcription and chromatin remodeling factors to a cell cycle- and developmentally regulated promoter.

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  • 1Research Institute of Molecular Pathology, Vienna, Austria.

Abstract

Gene activation in eukaryotes requires chromatin remodeling complexes like Swi/Snf and histone acetylases like SAGA. How these factors are recruited to promoters is not yet understood. Using CHIP, we measured recruitment of Swi/Snf, SAGA, the repressor Ash1p, and transcription factors Swi5p and SBF to the HO endonuclease promoter as cells progress through the yeast cell cycle. Swi5p's entry into nuclei at the end of anaphase recruits Swi/Snf, which then recruits SAGA. These two factors then facilitate SBF's binding. Ash1p, which only accumulates in daughter cell nuclei, binds to HO soon after Swi5p and aborts recruitment of Swi/Snf, SAGA, and SBF. Swi5p remains at HO for only 5 min. Swi/Snf's and SAGA's subsequent persistence at HO is self sustaining and constitutes an "epigenetic memory" of HO's transient interaction with Swi5p.

PMID:
10319811
[PubMed - indexed for MEDLINE]
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