Results 41 to 50 of about 3,713 (189)

Quorum Sensing Activity of Serratia fonticola Strain RB-25 Isolated from an Ex-landfill Site

open access: yesSensors, 2014
Quorum sensing is a unique bacterial communication system which permits bacteria to synchronize their behaviour in accordance with the population density.
Robson Ee   +4 more
doaj   +1 more source

Negative regulation of violacein biosynthesis in Chromobacterium violaceum [PDF]

open access: yes, 2017
In Chromobacteium violaceum, the purple pigment violacein is under positive regulation by the N-acylhomoserine lactone CviI/R quorum sensing system and negative regulation by an uncharacterized putative repressor.
Aguilar   +47 more
core   +2 more sources

PfmA, a novel quorum-quenching N-acylhomoserine lactone acylase from Pseudoalteromonas flavipulchra

open access: yesMicrobiology, 2017
Many bacteria, such as Proteobacteria, Cyanobacteria and Bacteroidetes, use N-acylhomoserine lactones (AHLs) as quorum-sensing (QS) signal molecules for communication. Enzymatic degradation of AHLs, such as AHL acylase and AHL lactonase, can degrade AHLs (quorum quenching, QQ) to attenuate or disarm the virulence of pathogens.
Na, Liu   +5 more
openaire   +2 more sources

Quorum Sensing Activity of Hafnia alvei Isolated from Packed Food

open access: yesSensors, 2014
Quorum sensing (QS) is a mechanism adopted by bacteria to regulate expression of genes according to population density. N-acylhomoserine lactones (AHLs) are a type of QS signalling molecules commonly found in Gram-negative bacteria which have been ...
Jia-Yi Tan, Wai-Fong Yin, Kok-Gan Chan
doaj   +1 more source

Social interactions in the Burkholderia cepacia complex : biofilms and quorum sensing [PDF]

open access: yes, 2010
Burkholderia cepacia complex bacteria are opportunistic pathogens that cause respiratory tract infections in susceptible patients, mainly people with cystic fibrosis. There is convincing evidence that B.
Coenye, Tom
core   +2 more sources

A novel medium for the isolation of N-acylhomoserine lactone-degrading bacteria

open access: yesJournal of Industrial Microbiology & Biotechnology, 2008
A novel chemically defined medium, named KG medium, supplemented with N-3-oxo-hexanoylhomoserine lactone (3-oxo-C6-HSL), an acylhomoserine lactone (AHL) used as signalling molecules in Gram-negative bacterial cell-to-cell communication, as the sole source of carbon and nitrogen, was designed and successfully used for the enrichment and isolation of AHL-
Kok-Gan, Chan   +3 more
openaire   +2 more sources

Effects of natural and chemically synthesized furanones on quorum sensing in Chromobacterium violaceum

open access: yesBMC Microbiology, 2004
Background Cell to cell signaling systems in Gram-negative bacteria rely on small diffusible molecules such as the N-acylhomoserine lactones (AHL). These compounds are involved in the production of antibiotics, exoenzymes, virulence factors and biofilm ...
Brandl Helmut   +4 more
doaj   +1 more source

Novel Bifunctional Acylase from Actinoplanes utahensis: A Versatile Enzyme to Synthesize Antimicrobial Compounds and Use in Quorum Quenching Processes

open access: yesAntibiotics, 2021
Many intercellular communication processes, known as quorum sensing (QS), are regulated by the autoinducers N-acyl-l-homoserine lactones (AHLs) in Gram-negative bacteria.
Lara Serrano-Aguirre   +5 more
doaj   +1 more source

Interference with the germination and growth of Ulvazoospores by quorum-sensing molecules from Ulva-associated epiphytic bacteria [PDF]

open access: yes, 2013
Ulva zoospores preferentially settle on N-acylhomoserine lactone (AHL) producing marine bacterial biofilms. To investigate whether AHL signal molecules also affect the success and rate of zoospore germination in addition to zoospore attraction, the ...
Atkinson, S   +4 more
core   +2 more sources

Identification of QuiP, the Product of Gene PA1032, as the Second Acyl-Homoserine Lactone Acylase of Pseudomonas aeruginosa PAO1 [PDF]

open access: yes, 2006
The relevance of the acyl homoserine lactone (acyl-HSL) quorum signals N-3-oxododecanoyl-homoserine lactone (3OC12HSL) and N-butanoyl-homoserine lactone to the biology and virulence of Pseudomonas aeruginosa is well investigated.
Huang, Jean J.   +3 more
core   +1 more source

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