Acta Biologica
Previously: Zeszyty Naukowe Uniwersytetu Szczecińskiego. Acta Biologica
QS – systems communication of Gram-positive bacterial cells
DOI: 10.18276/ab.2017.24-06
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| ISSN: | 2450-8330 |
| Authors: |
Alicja
Ziemichód
University of Szczecin, Department of Genetics, Faculty of Biology Bogumiła Skotarczak University of Szczecin, Department of Genetics, Faculty of Biology |
| Keywords: | Quorum sensing Gram-positive bacteria signaling molecules gene expression competence of Streptococcus pneumoniae and Bacillus subtilis virulence of Staphylococcus aureus |
| Issue / book publication date: | 2017 |
| Page range: | 6 (51-56) |
| OAI-PMH: | Metadata |
Abstract
In Gram-positive bacteria, cell-to-cell communication, also called quorum sensing (QS) mainly
is dependent on extracellular signaling oligopeptide pheromones, which stimulate a response
either indirectly, by activating a two-component phosphorelay, or directly, by binding to
cytoplasmic effectors. The oligopeptide pheromones production and secretion are initiated in
response to specific environmental stimuli or stresses. These pheromones are biosynthesized
through different pathways and some have unusual functional chemistry as a result of posttranslational
modifications. In the cells of Bacillus subtilis and Streptococcus pneumoniae this
system controls the acquisition of the state of competence, while in Staphylococcus aureus it
regulates virulence. The review aims at giving an updated overview of these peptide-dependant
communication pathways.
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