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The packaging of the eukaryotic genome into chromatin is likely to have a profound influence on transcription from the underlying genes. We have previously shown that the disassembly of promoter nucleosomes is obligatory for activation of the yeast PHO5 and PHO8 genes. Here, we show that the PHO5 promoter nucleosomes are reassembled concomitant with transcriptional repression and displacement of the...
Nucleosome loss from a promoter region has recently been described as a potential mechanism for transcriptional regulation. We investigated whether H3/H4 histone chaperones mediate the loss of nucleosomes from the promoter of the yeast PHO5 gene during transcriptional activation. We found that antisilencing function 1 (Asf1p) mediates nucleosome disassembly from the PHO5 promoter in vivo. We show...
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