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Title: EzrA contributes to the regulation of cell size in Staphylococcus aureus
Author: Jorge, A.M.
Hoiczyk, E.
Gomes, João Paulo
Pinho, M.G.
Keywords: Infecções Respiratórias
Staphylococcus Aureus
Issue Date: 2011
Publisher: Public Library of Science
Citation: PLoS One. 2011;6(11):e27542. Epub 2011 Nov 14
Abstract: EzrA is a negative regulator of FtsZ in Bacillus subtilis, involved in the coordination between cell growth and cell division and in the control of the cell elongation-division cycle. We have now studied the role of the Staphylococcus aureus homologue of the B. subtilis EzrA protein and shown that it is not essential for cell viability. EzrA conditional and null mutants have an overall increase of the average cell size, compared to wild type strains. In the larger ezrA mutant S. aureus cells, cell division protein FtsZ and the cell wall synthesizing Penicillin Binding Proteins (PBPs) are not properly localized. This suggests that there may be a maximum cell diameter that allows formation of a Z-ring capable of recruiting the other components of the divisome and of driving cytokinesis. We propose that the major role of EzrA in S. aureus is in cell size homeostasis.
Peer review: yes
ISSN: 1932-6203
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Appears in Collections:DDI - Artigos em revistas internacionais

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