Thiol-specific oxidant diamide downregulates whiA gene of Corynebacterium glutamicum, thereby suppressing cell division and metabolism
Copyright © 2020 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved..
The whiA (NCgl1527) gene from Corynebacterium glutamicum plays a crucial role during cell growth, and WhiA is recognized as the transcription factor for genes involved in cell division. In this study, we assessed the regulatory role of the gene in cell physiology. Transcription of the gene was specifically downregulated by the thiol-specific oxidant, diamide, and by heat stress. Cells exposed to diamide showed decreased transcription of genes involved in cell division and these effects were more profound in ΔwhiA cells. In addition, the ΔwhiA cells showed sensitivity to thiol-specific oxidants, DNA-damaging agents, and high temperature. Further, downregulation of sigH (NCgl0733), the central regulator in stress responses, along with master regulatory genes in cell metabolism, was observed in the ΔwhiA strain. Moreover, the amount of cAMP in the ΔwhiA cells in the early stationary phase was only at 30% level of that for the wild-type strain. Collectively, our data indicate that the role of whiA is to downregulate genes associated with cell division in response to heat or thiol-specific oxidative stress, and may suggest a role for the gene in downshifting cell metabolism by downregulating global regulatory genes when growth condition is not optimal for cells.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:171 |
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| Enthalten in: |
Research in microbiology - 171(2020), 8 vom: 15. Dez., Seite 331-340 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jeong, Haeri [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 30.06.2021 Date Revised 30.06.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.resmic.2020.07.005 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM313257329 |
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| 500 | |a published: Print-Electronic | ||
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| 520 | |a Copyright © 2020 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved. | ||
| 520 | |a The whiA (NCgl1527) gene from Corynebacterium glutamicum plays a crucial role during cell growth, and WhiA is recognized as the transcription factor for genes involved in cell division. In this study, we assessed the regulatory role of the gene in cell physiology. Transcription of the gene was specifically downregulated by the thiol-specific oxidant, diamide, and by heat stress. Cells exposed to diamide showed decreased transcription of genes involved in cell division and these effects were more profound in ΔwhiA cells. In addition, the ΔwhiA cells showed sensitivity to thiol-specific oxidants, DNA-damaging agents, and high temperature. Further, downregulation of sigH (NCgl0733), the central regulator in stress responses, along with master regulatory genes in cell metabolism, was observed in the ΔwhiA strain. Moreover, the amount of cAMP in the ΔwhiA cells in the early stationary phase was only at 30% level of that for the wild-type strain. Collectively, our data indicate that the role of whiA is to downregulate genes associated with cell division in response to heat or thiol-specific oxidative stress, and may suggest a role for the gene in downshifting cell metabolism by downregulating global regulatory genes when growth condition is not optimal for cells | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Corynebacterium glutamicum | |
| 650 | 4 | |a Diamide | |
| 650 | 4 | |a Oxidative stress | |
| 650 | 4 | |a whiA | |
| 650 | 7 | |a Bacterial Proteins |2 NLM | |
| 650 | 7 | |a DNA-Binding Proteins |2 NLM | |
| 650 | 7 | |a Oxidants |2 NLM | |
| 650 | 7 | |a Sulfhydryl Compounds |2 NLM | |
| 650 | 7 | |a Sulfhydryl Reagents |2 NLM | |
| 650 | 7 | |a Transcription Factors |2 NLM | |
| 650 | 7 | |a Diamide |2 NLM | |
| 650 | 7 | |a 10465-78-8 |2 NLM | |
| 650 | 7 | |a Cyclic AMP |2 NLM | |
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| 700 | 1 | |a Lee, Jae-Hyun |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Younhee |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Heung-Shick |e verfasserin |4 aut | |
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