Quorum sensing by peptide pheromones and two‐component signal‐transduction systems in Gram‐positive bacteria
نویسندگان
چکیده
منابع مشابه
Quorum sensing in bacteria.
Quorum sensing is the regulation of gene expression in response to fluctuations in cell-population density. Quorum sensing bacteria produce and release chemical signal molecules called autoinducers that increase in concentration as a function of cell density. The detection of a minimal threshold stimulatory concentration of an autoinducer leads to an alteration in gene expression. Gram-positive...
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Large populations of bacteria communicate by sending into the environment some specific signalling molecules. A bacterium will sense the population density by the concentration of the signalling molecule. This process, known as “quorum sensing”, is used in this paper to show the emergent behaviour of a bacterium colony in various circumstances. The biochemistry associated with quorum sensing ha...
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Communication among bacterial cells through quorum-sensing (QS) systems is used to regulate ecologically and medically important traits, including virulence to hosts. QS is widespread in bacteria; it has been demonstrated experimentally in diverse phylogenetic groups, and homologs to the implicated genes have been discovered in a large proportion of sequenced bacterial genomes. The widespread d...
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Bacterial cells can produce and sense signal molecules, allowing the whole population to initiate a concerted action once a critical concentration (corresponding to a particular population density) of the signal has been reached, a phenomenon known as quorum sensing. One of the possible quorum sensing-regulated phenotypes is swarming, a flagella-driven movement of differentiated swarmer cells (...
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Cell communication in bacteria occurs through a vernacular of small diffusible chemical signals that impact gene regulation during times of high cell density. This form of intercellular signaling, known as quorum sensing, optimizes the metabolic and behavioral activities of a community of bacteria for life in close quarters. Quorum sensing is best characterized as a means of communication withi...
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ژورنال
عنوان ژورنال: Molecular Microbiology
سال: 1997
ISSN: 0950-382X,1365-2958
DOI: 10.1046/j.1365-2958.1997.4251782.x