Results 31 to 40 of about 10,030 (185)

LuxS influencesEscherichia colibiofilm formation through autoinducer-2-dependent and autoinducer-2-independent modalities [PDF]

FEMS Microbiology Ecology, 2012
Escherichia coli produces biofilms in response to the small molecule autoinducer-2 (AI-2), a product of the LuxS enzyme. LuxS is part of the activated methyl cycle and could also affect biofilm development by AI-2-independent effects on metabolism. A luxS deletion mutant of E.
Chen, Niu, Chandan M, Robbins, Kelly J, Pittman, joDi L, Osborn, Bryan A, Stubblefield, Robert B, Simmons, Eric S, Gilbert   +6 more
openaire   +2 more sources

Ιn Vitro Screening of γ-Aminobutyric Acid and Autoinducer-2 Signalling in Lactic Acid Bacteria Exhibiting Probiotic Potential Isolated from Natural Black Conservolea Olives. [PDF]

Foods, 2019
In the present study, 33 strains of lactic acid bacteria (LAB) previously isolated from natural black Conservolea olives were assessed for their probiotic potential in vitro, as well as for their autoinducer-2 (AI-2) activity under standard growth ...
Pavli F, Gkana E, Adebambo O, Karatzas KA, Panagou E, Nychas GE.   +5 more
europepmc   +3 more sources

Identification of Functional LsrB-Like Autoinducer-2 Receptors [PDF]

Journal of Bacteriology, 2009
ABSTRACTAlthough a variety of bacterial species have been reported to use the interspecies communication signal autoinducer-2 (AI-2) to regulate multiple behaviors, the molecular mechanisms of AI-2 recognition and signal transduction remain poorly understood.
Pereira, C. S., De Regt, Anna Katherine, , '09, Brito, P. H., Miller, Stephen T., Xavier, K. B.   +4 more
openaire   +4 more sources

Analysis of Autoinducer-2 Quorum Sensing in Yersinia pestis [PDF]

Infection and Immunity, 2013
ABSTRACT The autoinducer-2 (AI-2) quorum-sensing system has been linked to diverse phenotypes and regulatory changes in pathogenic bacteria. In the present study, we performed a molecular and biochemical characterization of the AI-2 system in Yersinia pestis , the causative agent of plague. In strain CO92,
Jing, Yu, Melissa L, Madsen, Michael D, Carruthers, Gregory J, Phillips, Jeffrey S, Kavanaugh, Jeff M, Boyd, Alexander R, Horswill, F Chris, Minion   +7 more
openaire   +2 more sources

Autoinducer-2 May Be a New Biomarker for Monitoring Neonatal Necrotizing Enterocolitis. [PDF]

Front Cell Infect Microbiol, 2020
El autoinductor-2 (AI-2) tiene un papel ampliamente aceptado en la comunicación bacteriana intra e interespecie. Poco se sabe sobre las relaciones entre AI-2 y NEC. Este estudio encontró que los niveles de AI-2 en pacientes y en un modelo de ratón NEC se detectaron utilizando el sistema de ensayo Vibrio harveyi BB170.
Fu CY, Li LQ, Yang T, She X, Ai Q, Wang ZL.   +5 more
europepmc   +5 more sources

Sinorhizobium Meliloti, A Bacterium Lacking The Autoinducer-2 (AI-2) Synthase, Responds To AI-2 Supplied By Other Bacteria [PDF]

, 2008
Many bacterial species respond to the quorum-sensing signal autoinducer-2 (AI-2) by regulating different niche-specific genes. Here, we show that Sinorhizobium meliloti, a plant symbiont lacking the gene for the AI-2 synthase, while not capable of ...
McAuley, J. R., Miller, Stephen T., Pereira, C. S., Taga, M. E., Xavier, K. B.   +4 more
core   +2 more sources

A Facile HPLC-UV-Based Method for Determining the Concentration of the Bacterial Universal Signal Autoinducer-2 in Environmental Samples

Applied Sciences, 2021
As a universal quorum sensing (QS) signal, autoinducer-2 (AI-2) is utilized by both Gram-negative and Gram-positive bacteria to coordinate several group behaviors, such as biofilm formation, virulence, and motility, when the bacterial cell density ...
Kibaek Lee, Chung-Hak Lee, Kwang-Ho Choo
doaj   +1 more source

Quorum sensing signaling molecules produced by reference and emerging soft-rot bacteria (Dickeya and Pectobacterium spp.). [PDF]

PLoS ONE, 2012
BackgroundSeveral small diffusible molecules are involved in bacterial quorum sensing and virulence. The production of autoinducers-1 and -2, quinolone, indole and γ-amino butyrate signaling molecules was investigated in a set of soft-rot bacteria ...
Alexandre Crépin, Corinne Barbey, Amélie Beury-Cirou, Valérie Hélias, Laure Taupin, Sylvie Reverchon, William Nasser, Denis Faure, Alain Dufour, Nicole Orange, Marc Feuilloley, Karin Heurlier, Jean-François Burini, Xavier Latour   +13 more
doaj   +1 more source

Peptides as quorum sensing molecules : measurement techniques and obtained levels in vitro and in vivo [PDF]

, 2017
The expression of certain bacterial genes is regulated in a cell-density dependent way, a phenomenon called quorum sensing. Both Gram-negative and Gram-positive bacteria use this type of communication, though the signal molecules (auto-inducers) used by ...
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core   +2 more sources

Salmonella Typhimurium and Multidirectional Communication in the Gut [PDF]

, 2016
The mammalian digestive tract is home to trillions of microbes, including bacteria, archaea, protozoa, fungi and viruses. In monogastric mammals the stomach and small intestine harbor diverse bacterial populations but are typically less populated than ...
Alaniz, Robert, Gart, Elena, Jr., Lawhon, Sara, Randel, Ronald, Suchodolski, Jan, Welsh, Thomas   +6 more
core   +5 more sources