Global and Gene-specific Transcriptional Responses to Acute Stress
Global and Gene-specific Transcriptional Responses to Acute Stress
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对急性应激的整体和基因特异性转录反应
DOI:
10.1101/2021.07.16.452657
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Fischl H
中科院分区:
文献类型:
--
作者:
Fischl H
Nucleosomes may regulate transcription by controlling access to promoters by transcription factors and RNA polymerase II (Pol2). Potentially active genes display nucleosome depleted regions flanked by positioned -1 and +1 nucleosomes. On yeast genes, the transcription start site (TSS) is on the upstream face of the +1 nucleosome, but whether precise +1 nucleosome positioning controls Pol2 access to the TSS remains unclear. Here, using acute nutrient starvation to rapidly reprogramme the genome, we show highly dynamic upstream or downstream shifts in the position of +1 nucleosomes, coincident with levels of transcriptionally engaged Pol2 at 58% of genes. Transcript level changes broadly reflect Pol2 occupancy changes with a delay but can be further influenced by Pub1 or Puf3 dependent changes in transcript degradation rates. The response to acute stress has a second component as we also observed genome-wide changes in Pol2 distribution on genes, independent of changes in Pol2 occupancy, with Pol2 accumulating upstream of a +170 nt stalling site. Mathematical modelling supports a global increase in promoter-proximal early transcription termination as a major component of the global stress response. Thus, we uncover a two-component transcriptional response to stress, one focused on the +1 nucleosome, the second on Pol2 itself.A two-component responses to acute stress involving a gene-specific response and a global responseDynamic shifting of +1 nucleosome position with transcriptional activation or repression.Global targeting of Pol2 leading to early transcription termination on acute stress
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影响因子:
--
作者:
Fendt SM;Sauer U
通讯作者:
Sauer U
影响因子:
3.3
作者:
Berry, David B.;Gasch, Audrey P.
通讯作者:
Gasch, Audrey P.
影响因子:
16
作者:
Vasudevan,S;Peltz,SW
通讯作者:
Peltz,SW
DOI:
10.1038/nrm.2017.47
发表时间:
2017-09
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Lai WKM;Pugh BF
通讯作者:
Pugh BF
DOI:
10.1101/833921
发表时间:
2019
期刊:
--
影响因子:
--
作者:
Feltham J
通讯作者:
Feltham J