Chromatin remodeling and transcription of the TPK1 subunit of PKA during stress in Saccharomyces cerevisiae
Copyright © 2020 Elsevier B.V. All rights reserved..
In response to environmental changes cells rapidly rearrange their gene expression pattern in order to adapt to the new conditions. Chromatin remodeling is critical for this process playing a major role in the induction of genes involved in stress responses. We demonstrated previously that TPK1, encoding one of the catalytic subunits of PKA from Saccharomyces cerevisiae, is upregulated under heat shock. Herein, we investigate the chromatin remodeling of the TPK1, TPK2 and TPK3 promoters under heat stress. The TPK1 promoter is the only one that presents three positioned nucleosomes. Upon heat stress or osmostress these nucleosomes are evicted in clear correlation with promoter activation and upregulation of TPK1 mRNA levels. We find that remodelers SWI/SNF, RSC, INO80 and ISW1 participate in chromatin remodeling of the TPK1 promoter under thermal stress conditions. RSC and INO80 are necessary for nucleosomes positioning and contribute to repression of the TPK1 promoter under normal conditions while SWI/SNF participates in the eviction of nucleosomes after heat stress. SWI/SNF complex is recruited to the TPK1 promoter upon heat shock in a Msn2/4-dependent manner. Finally, both Tpk1 and Tpk2 catalytic subunits are recruited to the TPK1 promoter with opposite association patterns. Tpk1 catalytic activity is necessary for nucleosome rearrangement on the TPK1 promoter while Tpk2 and Tpk3 inhibit the promoter activity and maintain a repressive chromatin conformation. This work enlightens the mechanism of regulation of TPK1 expression during heat-stress, contributing to the knowledge of specificity in fine-tuning the cAMP-PKA signaling circuit.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:1863 |
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| Enthalten in: |
Biochimica et biophysica acta. Gene regulatory mechanisms - 1863(2020), 9 vom: 15. Sept., Seite 194599 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Reca, Sol [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 07.12.2020 Date Revised 14.12.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.bbagrm.2020.194599 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM311771602 |
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| 100 | 1 | |a Reca, Sol |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Chromatin remodeling and transcription of the TPK1 subunit of PKA during stress in Saccharomyces cerevisiae |
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| 500 | |a Date Completed 07.12.2020 | ||
| 500 | |a Date Revised 14.12.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2020 Elsevier B.V. All rights reserved. | ||
| 520 | |a In response to environmental changes cells rapidly rearrange their gene expression pattern in order to adapt to the new conditions. Chromatin remodeling is critical for this process playing a major role in the induction of genes involved in stress responses. We demonstrated previously that TPK1, encoding one of the catalytic subunits of PKA from Saccharomyces cerevisiae, is upregulated under heat shock. Herein, we investigate the chromatin remodeling of the TPK1, TPK2 and TPK3 promoters under heat stress. The TPK1 promoter is the only one that presents three positioned nucleosomes. Upon heat stress or osmostress these nucleosomes are evicted in clear correlation with promoter activation and upregulation of TPK1 mRNA levels. We find that remodelers SWI/SNF, RSC, INO80 and ISW1 participate in chromatin remodeling of the TPK1 promoter under thermal stress conditions. RSC and INO80 are necessary for nucleosomes positioning and contribute to repression of the TPK1 promoter under normal conditions while SWI/SNF participates in the eviction of nucleosomes after heat stress. SWI/SNF complex is recruited to the TPK1 promoter upon heat shock in a Msn2/4-dependent manner. Finally, both Tpk1 and Tpk2 catalytic subunits are recruited to the TPK1 promoter with opposite association patterns. Tpk1 catalytic activity is necessary for nucleosome rearrangement on the TPK1 promoter while Tpk2 and Tpk3 inhibit the promoter activity and maintain a repressive chromatin conformation. This work enlightens the mechanism of regulation of TPK1 expression during heat-stress, contributing to the knowledge of specificity in fine-tuning the cAMP-PKA signaling circuit | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Chromatin remodeling | |
| 650 | 4 | |a Nucleosomes | |
| 650 | 4 | |a PKA | |
| 650 | 4 | |a Saccharomyces cerevisiae | |
| 650 | 4 | |a Signal transduction | |
| 650 | 4 | |a Transcription | |
| 650 | 7 | |a DNA-Binding Proteins |2 NLM | |
| 650 | 7 | |a Saccharomyces cerevisiae Proteins |2 NLM | |
| 650 | 7 | |a Cyclic AMP-Dependent Protein Kinases |2 NLM | |
| 650 | 7 | |a EC 2.7.11.11 |2 NLM | |
| 650 | 7 | |a Tpk1 protein, S cerevisiae |2 NLM | |
| 650 | 7 | |a EC 2.7.11.11 |2 NLM | |
| 700 | 1 | |a Galello, Fiorella |e verfasserin |4 aut | |
| 700 | 1 | |a Ojeda, Lucas |e verfasserin |4 aut | |
| 700 | 1 | |a Pautasso, Constanza |e verfasserin |4 aut | |
| 700 | 1 | |a Cañonero, Luciana |e verfasserin |4 aut | |
| 700 | 1 | |a Moreno, Silvia |e verfasserin |4 aut | |
| 700 | 1 | |a Portela, Paula |e verfasserin |4 aut | |
| 700 | 1 | |a Rossi, Silvia |e verfasserin |4 aut | |
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