Details

Autor(en) / Beteiligte

• Mueller, Britta
• Mieczkowski, Jakub
• Kundu, Sharmistha
• Wang, Peggy
• Sadreyev, Ruslan
• Tolstorukov, Michael Y
• Kingston, Robert E

Titel

Widespread changes in nucleosome accessibility without changes in nucleosome occupancy during a rapid transcriptional induction

Ist Teil von

• Genes & development, 2017-03, Vol.31 (5), p.451-462

Ort / Verlag

United States: Cold Spring Harbor Laboratory Press

Erscheinungsjahr

2017

Quelle

The Electronic Journals Library

Beschreibungen/Notizen

• Activation of transcription requires alteration of chromatin by complexes that increase the accessibility of nucleosomal DNA. Removing nucleosomes from regulatory sequences has been proposed to play a significant role in activation. We tested whether changes in nucleosome occupancy occurred on the set of genes that is activated by the unfolded protein response (UPR). We observed no decrease in occupancy on most promoters, gene bodies, and enhancers. Instead, there was an increase in the accessibility of nucleosomes, as measured by micrococcal nuclease (MNase) digestion and ATAC-seq (assay for transposase-accessible chromatin [ATAC] using sequencing), that did not result from removal of the nucleosome. Thus, changes in nucleosome accessibility predominate over changes in nucleosome occupancy during rapid transcriptional induction during the UPR.