Results 21 to 30 of about 5,057 (176)

Characterization of Quorum Sensing and Quorum Quenching Soil Bacteria Isolated from Malaysian Tropical Montane Forest

Sensors, 2012
We report the production and degradation of quorum sensing N-acyl-homoserine lactones by bacteria isolated from Malaysian montane forest soil. Phylogenetic analysis indicated that these isolates clustered closely to the genera of Arthrobacter, Bacillus ...
Kok-Gan Chan, Wai-Fong Yin, Yeun-Mun Choo, Choon-Kook Sam, Teik-Min Chong, Chong-Lek Koh   +5 more
doaj   +1 more source

Acyl homoserine-lactone quorum-sensing signal generation [PDF]

Proceedings of the National Academy of Sciences, 1999
Acyl homoserine lactones (acyl-HSLs) are important intercellular signaling molecules used by many bacteria to monitor their population density in quorum-sensing control of gene expression. These signals are synthesized by members of the LuxI family of proteins. To understand the mechanism of acyl-HSL synthesis we have purified the
M R, Parsek, D L, Val, B L, Hanzelka, J E, Cronan, E P, Greenberg   +4 more
openaire   +2 more sources

Long Chain N-acyl Homoserine Lactone Production by Enterobacter sp. Isolated from Human Tongue Surfaces

Sensors, 2012
We report the isolation of N-acyl homoserine lactone-producing Enterobacter sp. isolate T1-1 from the posterior dorsal surfaces of the tongue of a healthy individual. Spent supernatants extract from Enterobacter sp.
Kok-Gan Chan, Xin-Yue Chan, Shenyang Chin, Wai-Fong Yin, Kathiravan Purmal   +4 more
doaj   +1 more source

Identification of Quorum-Sensing Molecules of N-Acyl-Homoserine Lactone in Gluconacetobacter Strains by Liquid Chromatography-Tandem Mass Spectrometry

Molecules, 2019
Many Gram-negative bacteria can regulate gene expression in a cell density-dependent manner via quorum-sensing systems using N-acyl-homoserine lactones (AHLs), which are typical quorum-sensing signaling molecules, and thus modulate physiological ...
Ling-Pu Liu, Long-Hui Huang, Xiao-Tong Ding, Lin Yan, Shi-Ru Jia, Yu-Jie Dai, Yan-Yan Xie, Cheng Zhong   +7 more
doaj   +1 more source

Natural Lactone-Based Quorum Sensing Inhibitors Attenuate Virulence in Pseudomonas aeruginosa. [PDF]

Chem Biodivers
Targeting bacterial communication, lab‐generated lactones (Lx) inhibited biofilm formation and eliminated mature biofilms within 24–48 h. Lx treatment also suppressed pyocyanin and rhamnolipid production while downregulating rhlR expression, highlighting their promise as potent quorum‐sensing (QS) inhibitors and next‐generation antibiofilm therapeutics.
Chaturvedi S, Sharma A, Singh T, Das BB, Dutta T, Khare SK.   +5 more
europepmc   +2 more sources

Interkingdom signaling: Deciphering the language of acyl homoserine lactones [PDF]

FEMS Microbiology Reviews, 2005
Bacteria use small secreted chemicals or peptides as auto-inducers to coordinately regulate gene expression within a population in a process called quorum sensing. Quorum sensing controls several important functions in different bacterial species, including the production of virulence factors and biofilm formation in Pseudomonas aeruginosa and ...
Erin K, Shiner, Kendra P, Rumbaugh, Simon C, Williams   +2 more
openaire   +2 more sources

Acyl homoserine lactones from culture supernatants of Pseudomonas aeruginosa accelerate host immunomodulation. [PDF]

PLoS ONE, 2011
The virulence of Pseudomonas aeruginosa is multifactorial and under the control of quorum sensing signals, such as acyl homoserine lactones (AHLs). The importance of these molecules in the establishment of infection has been previously reported.
Ravi Kumar Gupta, Sanjay Chhibber, Kusum Harjai   +2 more
doaj   +1 more source

Defining the Structure and Function of Acyl-Homoserine Lactone Autoinducers [PDF]

, 2010
Quorum sensing plays a central role in regulating many community-derived symbiotic and pathogenic relationships of bacteria, and as such has attracted much attention in recent years. Acyl-homoserine lactones (AHLs) are important signaling molecules in the quorum sensing gene-regulatory processes found in numerous gram-negative species of bacteria that ...
Mair E A, Churchill, Hiruy M, Sibhatu, Charis L, Uhlson   +2 more
openaire   +2 more sources

In Planta Biocontrol of Pectobacterium atrosepticum by Rhodococcus erythropolis Involves Silencing of Pathogen Communication by the Rhodococcal Gamma-Lactone Catabolic Pathway. [PDF]

PLoS ONE, 2013
The virulence of numerous Gram-negative bacteria is under the control of a quorum sensing process based on synthesis and perception of N-acyl homoserine lactones.
Corinne Barbey, Alexandre Crépin, Dorian Bergeau, Asma Ouchiha, Lily Mijouin, Laure Taupin, Nicole Orange, Marc Feuilloley, Alain Dufour, Jean-François Burini, Xavier Latour   +10 more
doaj   +1 more source

Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones

Ecotoxicology and Environmental Safety, 2021
Given the high content of Ca2+ in waste paper recycling wastewater, the anaerobic granular sludge (AnGS) undergoes calcification during wastewater treatment and affects the treatment efficiency.
Meiling Li, Yueru Wu, Zhiwei Wang, Wencai Fu, Wenhao Dang, Yongli Chen, Yi Ning, Shuangfei Wang   +7 more
doaj   +1 more source