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Title: Phosphorylation of the Bacillus subtilis Replication Controller YabA Plays a Role in Regulation of Sporulation and Biofilm Formation

Abstract

Bacillus subtilis cells can adopt different life-styles in response to various environmental cues, including planktonic cells during vegetative growth, sessile cells during biofilm formation and sporulation. While switching life-styles, bacteria must coordinate the progression of their cell cycle with their physiological status. Our current understanding of the regulatory pathways controlling the decision-making processes and triggering developmental switches highlights a key role of protein phosphorylation. The regulatory mechanisms that integrate the bacterial chromosome replication status with sporulation involve checkpoint proteins that target the replication initiator DnaA or the kinase phosphorelay controlling the master regulator Spo0A. B. subtilis YabA is known to interact with DnaA to prevent over-initiation of replication during vegetative growth. Here, we report that YabA is phosphorylated by YabT, a Ser/Thr kinase expressed during sporulation and biofilm formation. The phosphorylation of YabA has no effect on replication initiation control but hyper-phosphorylation of YabA leads to an increase in sporulation efficiency and a strong inhibition of biofilm formation. We also provide evidence that YabA phosphorylation affects the level of Spo0A-P in cells. In conclusion, these results indicate that YabA is a multifunctional protein with a dual role in regulating replication initiation and life-style switching, thereby providing a potential mechanism formore » cross-talk and coordination of cellular processes during adaptation to environmental change.« less

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
European Commission - Community Research and Development Information Service (CORDIS) - Seventh Framework Programme (FP7); USDOE Office of Science (SC)
OSTI Identifier:
1427555
Alternate Identifier(s):
OSTI ID: 1460839
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Frontiers in Microbiology
Additional Journal Information:
Journal Name: Frontiers in Microbiology Journal Volume: 9; Journal ID: ISSN 1664-302X
Publisher:
Frontiers Media SA
Country of Publication:
Switzerland
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Bacillus subtilis; Ser/Thr kinase; biofilm; replication initiation control; sporulation

Citation Formats

García García, Tránsito, Ventroux, Magali, Derouiche, Abderahmane, Bidnenko, Vladimir, Correia Santos, Sara, Henry, Céline, Mijakovic, Ivan, Noirot-Gros, Marie-Françoise, and Poncet, Sandrine. Phosphorylation of the Bacillus subtilis Replication Controller YabA Plays a Role in Regulation of Sporulation and Biofilm Formation. Switzerland: N. p., 2018. Web. doi:10.3389/fmicb.2018.00486.
García García, Tránsito, Ventroux, Magali, Derouiche, Abderahmane, Bidnenko, Vladimir, Correia Santos, Sara, Henry, Céline, Mijakovic, Ivan, Noirot-Gros, Marie-Françoise, & Poncet, Sandrine. Phosphorylation of the Bacillus subtilis Replication Controller YabA Plays a Role in Regulation of Sporulation and Biofilm Formation. Switzerland. https://doi.org/10.3389/fmicb.2018.00486
García García, Tránsito, Ventroux, Magali, Derouiche, Abderahmane, Bidnenko, Vladimir, Correia Santos, Sara, Henry, Céline, Mijakovic, Ivan, Noirot-Gros, Marie-Françoise, and Poncet, Sandrine. Wed . "Phosphorylation of the Bacillus subtilis Replication Controller YabA Plays a Role in Regulation of Sporulation and Biofilm Formation". Switzerland. https://doi.org/10.3389/fmicb.2018.00486.
@article{osti_1427555,
title = {Phosphorylation of the Bacillus subtilis Replication Controller YabA Plays a Role in Regulation of Sporulation and Biofilm Formation},
author = {García García, Tránsito and Ventroux, Magali and Derouiche, Abderahmane and Bidnenko, Vladimir and Correia Santos, Sara and Henry, Céline and Mijakovic, Ivan and Noirot-Gros, Marie-Françoise and Poncet, Sandrine},
abstractNote = {Bacillus subtilis cells can adopt different life-styles in response to various environmental cues, including planktonic cells during vegetative growth, sessile cells during biofilm formation and sporulation. While switching life-styles, bacteria must coordinate the progression of their cell cycle with their physiological status. Our current understanding of the regulatory pathways controlling the decision-making processes and triggering developmental switches highlights a key role of protein phosphorylation. The regulatory mechanisms that integrate the bacterial chromosome replication status with sporulation involve checkpoint proteins that target the replication initiator DnaA or the kinase phosphorelay controlling the master regulator Spo0A. B. subtilis YabA is known to interact with DnaA to prevent over-initiation of replication during vegetative growth. Here, we report that YabA is phosphorylated by YabT, a Ser/Thr kinase expressed during sporulation and biofilm formation. The phosphorylation of YabA has no effect on replication initiation control but hyper-phosphorylation of YabA leads to an increase in sporulation efficiency and a strong inhibition of biofilm formation. We also provide evidence that YabA phosphorylation affects the level of Spo0A-P in cells. In conclusion, these results indicate that YabA is a multifunctional protein with a dual role in regulating replication initiation and life-style switching, thereby providing a potential mechanism for cross-talk and coordination of cellular processes during adaptation to environmental change.},
doi = {10.3389/fmicb.2018.00486},
journal = {Frontiers in Microbiology},
number = ,
volume = 9,
place = {Switzerland},
year = {Wed Mar 21 00:00:00 EDT 2018},
month = {Wed Mar 21 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.3389/fmicb.2018.00486

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