Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>

ABSTRACT Bacteria organize many membrane-related signaling processes in functional microdomains that are structurally and functionally similar to the lipid rafts of eukaryotic cells. An important structural component of these microdomains is the protein flotillin, which seems to act as a chaperone i...

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Autores principales:	Benjamin Mielich-Süss, Johannes Schneider, Daniel Lopez
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2013
Materias:	Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/9176e3adaac64c689115cac2f67dfa6c
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spelling	oai:doaj.org-article:9176e3adaac64c689115cac2f67dfa6c2021-11-15T15:42:32ZOverproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>10.1128/mBio.00719-132150-7511https://doaj.org/article/9176e3adaac64c689115cac2f67dfa6c2013-12-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mBio.00719-13https://doaj.org/toc/2150-7511ABSTRACT Bacteria organize many membrane-related signaling processes in functional microdomains that are structurally and functionally similar to the lipid rafts of eukaryotic cells. An important structural component of these microdomains is the protein flotillin, which seems to act as a chaperone in recruiting other proteins to lipid rafts to facilitate their interaction. In eukaryotic cells, the occurrence of severe diseases is often observed in combination with an overproduction of flotillin, but a functional link between these two phenomena is yet to be demonstrated. In this work, we used the bacterial model Bacillus subtilis as a tractable system to study the physiological alterations that occur in cells that overproduce flotillin. We discovered that an excess of flotillin altered specific signal transduction pathways that are associated with the membrane microdomains of bacteria. As a consequence of this, we detected significant defects in cell division and cell differentiation. These physiological alterations were in part caused by an unusual stabilization of the raft-associated protease FtsH. This report opens the possibility of using bacteria as a working model to better understand fundamental questions related to the functionality of lipid rafts. IMPORTANCE The identification of signaling platforms in the membrane of bacteria that are functionally and structurally equivalent to eukaryotic lipid rafts reveals a level of sophistication in signal transduction and membrane organization unexpected in bacteria. It opens new and promising venues to address intricate questions related to the functionality of lipid rafts by using bacteria as a more tractable system. This is the first report that uses bacteria as a working model to investigate a fundamental question that was previously raised while studying the role of eukaryotic lipid rafts. It also provides evidence of the critical role of these signaling platforms in orchestrating diverse physiological processes in prokaryotic cells.Benjamin Mielich-SüssJohannes SchneiderDaniel LopezAmerican Society for MicrobiologyarticleMicrobiologyQR1-502ENmBio, Vol 4, Iss 6 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Microbiology QR1-502
spellingShingle	Microbiology QR1-502 Benjamin Mielich-Süss Johannes Schneider Daniel Lopez Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
description	ABSTRACT Bacteria organize many membrane-related signaling processes in functional microdomains that are structurally and functionally similar to the lipid rafts of eukaryotic cells. An important structural component of these microdomains is the protein flotillin, which seems to act as a chaperone in recruiting other proteins to lipid rafts to facilitate their interaction. In eukaryotic cells, the occurrence of severe diseases is often observed in combination with an overproduction of flotillin, but a functional link between these two phenomena is yet to be demonstrated. In this work, we used the bacterial model Bacillus subtilis as a tractable system to study the physiological alterations that occur in cells that overproduce flotillin. We discovered that an excess of flotillin altered specific signal transduction pathways that are associated with the membrane microdomains of bacteria. As a consequence of this, we detected significant defects in cell division and cell differentiation. These physiological alterations were in part caused by an unusual stabilization of the raft-associated protease FtsH. This report opens the possibility of using bacteria as a working model to better understand fundamental questions related to the functionality of lipid rafts. IMPORTANCE The identification of signaling platforms in the membrane of bacteria that are functionally and structurally equivalent to eukaryotic lipid rafts reveals a level of sophistication in signal transduction and membrane organization unexpected in bacteria. It opens new and promising venues to address intricate questions related to the functionality of lipid rafts by using bacteria as a more tractable system. This is the first report that uses bacteria as a working model to investigate a fundamental question that was previously raised while studying the role of eukaryotic lipid rafts. It also provides evidence of the critical role of these signaling platforms in orchestrating diverse physiological processes in prokaryotic cells.
format	article
author	Benjamin Mielich-Süss Johannes Schneider Daniel Lopez
author_facet	Benjamin Mielich-Süss Johannes Schneider Daniel Lopez
author_sort	Benjamin Mielich-Süss
title	Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
title_short	Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
title_full	Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
title_fullStr	Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
title_full_unstemmed	Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>
title_sort	overproduction of flotillin influences cell differentiation and shape in <named-content content-type="genus-species">bacillus subtilis</named-content>
publisher	American Society for Microbiology
publishDate	2013
url	https://doaj.org/article/9176e3adaac64c689115cac2f67dfa6c
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Overproduction of Flotillin Influences Cell Differentiation and Shape in <named-content content-type="genus-species">Bacillus subtilis</named-content>

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