Many biological phenomena about quorum sensing in bacteria are driven by experimentally and mathematically in the last few decades. Symbiosis, virulence etc. are the major area in which these theoretical models work well. But no specific origin was established so far which can explain quorum sensing itself. This weakly nonlocal fluid dynamical model of bacterial communication system introduces ...

background: luxi is a component of the quorum sensing signaling pathway in vibrio fischeri responsible for the inducer synthesis that is essential for bioluminescence. methods: homology modeling of luxi was carried out using phyre2 and refined with the galaxyweb server. five models were generated and evaluated by errat, anolea, qmean6, and procheck. results: five refined models were generated b...

The etiologic agent of bubonic plague, Yersinia pestis, senses self-produced, secreted chemical signals in a process named quorum sensing. Though the closely related enteric pathogen Y. pseudotuberculosis uses quorum sensing system to regulate motility, the role of quorum sensing in Y. pestis has been unclear. In this study we performed transcriptional profiling experiments to identify Y. pesti...

A quorum-based distributed mutual exclusion protocol requires each processor in a distributed system to obtain permission from a quorum of processors before accessing a resource that cannot be concurrently shared. To prevent failed quorum members from blocking access to the resource, it is desirable to remove failed processors from quorums when failures are detected. This work addresses the pro...

Replication technology, such as Quorum NRW system, is the most effective technology to improve availability of SaaS. However, the variety of SaaS transaction will result in application unbalance. In this paper, we construct a new Quorum NRW system for multitenant database which is based on the method of sharing database and schema model. It can provide different R and W values for each tenant a...

BACKGROUND The light-emitting Vibrios provide excellent material for studying the interaction of cellular communication with growth rate because bioluminescence is a convenient marker for quorum sensing. However, the use of bioluminescence as a marker is complicated because bioluminescence itself may affect growth rate, e.g. by diverting energy. METHODOLOGY/PRINCIPAL FINDINGS The marker effec...

The increase in multidrug-resistant pathogens has created new anti-pathogenic and anti-virulence compounds. This is because of the behavioural changes bacteria acquire, such as increased antibiotic resistance virulence capacity. social behaviour maintained through a signalling transduction pathway called Quorum sensing. present study aims to evaluate inhibition quorum sensing Bacillus subtilis ...

We describe here a role for quorum sensing in the detachment, or sloughing, of Serratia marcescens filamentous biofilms, and we show that nutrient conditions affect the biofilm morphotype. Under reduced carbon or nitrogen conditions, S. marcescens formed a classical biofilm consisting of microcolonies. The filamentous biofilm could be converted to a microcolony-type biofilm by switching the med...

Adresa za dopisivanje Dr. sc. Ivan Puhar Zavod za parodontologiju Stomatološki fakultet Gundulićeva 5 10000 Zagreb, Hrvatska tel: +38514899219 [email protected] Sažetak Pojam quorum sensing označava međustaničnu komunikaciju bakterija kojom koordiniraju gensku ekspresiju populacije sukladno njezinoj gustoći. Bakterije proizvode i ispuštaju u međustanični prostor male molekule, tzv. autoinduktore, č...

While a functional quorum sensing system has been identified in the acidophilic chemolithoautotrophic Acidithiobacillus ferrooxidans ATCC 23270(T) and shown to modulate cell adhesion to solid substrates, nothing is known about the genes it regulates. To address the question of how quorum sensing controls biofilm formation in A. ferrooxidans (T), the transcriptome of this organism in conditions ...