Results 31 to 40 of about 3,735 (212)

Capsular polysaccharide biosynthesis and pathogenicity in Erwinia stewartii require induction by an N-acylhomoserine lactone autoinducer [PDF]

Journal of Bacteriology, 1995
N-Acylhomoserine lactone (acyl-HSL)-mediated gene expression, also called autoinduction, is conserved among diverse gram-negative bacteria. In the paradigm Vibrio fischeri system, bioluminescence is autoinducible, and the lux operon requires the transcriptional activator LuxR and the acyl-HSL autoinducer for expression.
Susanne B. von Bodman, Stephen K. Farrand   +1 more
openalex   +5 more sources

A second N-acylhomoserine lactone signal produced by Pseudomonas aeruginosa. [PDF]

Proceedings of the National Academy of Sciences, 1995
Quorum sensing systems are used by a number of Gram-negative bacterial species to regulate specific sets of genes in a cell density-dependent manner. Quorum sensing involves synthesis and detection of extracellular signals termed autoinducers. As shown in recombinant Escherichia coli, the Pseudomonas aeruginosa autoinducer (PAI) N-(3-oxododecanoyl ...
James P. Pearson, Luciano Passador, E. P. Greenberg, Barbara H. Iglewski   +3 more
openaire   +3 more sources

Distribution of N-Acylhomoserine Lactone-Producing Fluorescent Pseudomonads in the Phyllosphere and Rhizosphere of Potato (Solanum tuberosum L.)

Microbes and Environments, 2009
Four hundred and fifty nine isolates of fluorescent pseudomonads were obtained from the leaves and roots of potato plants. Of these, 20 leaf isolates and 28 root isolates induced violacein production in two N-acylhomoserine lactone (AHL)-reporter strains-Chromobacterium violaceum CV026 and VIR24.
Nobutaka Someya, Tomohiro Morohoshi, Nobuya Okano, Eiko Otsu, Kazuei Usuki, Mitsuru Sayama, Hiroyuki Sekiguchi, Tsukasa Ikeda, Shigeki Ishida   +8 more
openalex   +4 more sources

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

Microbiology, 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, Min Yu, Youbin Zhao, Jingguang Cheng, Ke An, Xiao‐Hua Zhang   +5 more
openalex   +4 more sources

Nocardioides kongjuensis sp. nov., an N-acylhomoserine lactone-degrading bacterium [PDF]

International Journal of Systematic and Evolutionary Microbiology, 2006
A Gram-positive, rod- or coccoid-shaped andN-hexanoyl-l-homoserine lactone-degrading bacterial strain, A2-4T, was isolated from a soil in Korea, and its taxonomic position was investigated by using a polyphasic approach. Strain A2-4Tgrew optimally at pH 7.0–8.0 and 30 °C without NaCl. Phylogenetic analyses based on 16S rRNA gene sequences revealed that
Tae-Kwang Oh, Seo-Youn Jung, Jung Kee Lee, Jung-Hoon Yoon, Ha-Kun Kim, Jung-Ae Kim   +5 more
openaire   +3 more sources

The Janthinobacterium sp. HH01 genome encodes a homologue of the V. cholerae CqsA and L. pneumophila LqsA autoinducer synthases [PDF]

, 2013
Janthinobacteria commonly form biofilms on eukaryotic hosts and are known to synthesize antibacterial and antifungal compounds. Janthinobacterium sp. HH01 was recently isolated from an aquatic environment and its genome sequence was established.
Blokesch, Melanie, Bode, Edna, Bode, Helge Björn, Bonge, Andreas, Daniel, Rolf, Dierking, Katja, Haack, Frederike Svenja, Hornung, Claudia, Jung, Kirsten, Krohn-Molt, Ines, Plener, Laure, Poehlein, Anja, Pohlen, Andrea, Pommerening-Röser, Andreas, Schmeißer, Christel, Schmidt, Martina, Schulenburg, Hinrich, Spieck, Eva, Streit, Wolfgang R., Timmermann, Gabriele, Utpatel, Christian   +20 more
core   +7 more sources

Quorum‐sensing in Acetobacter pasteurianus and its effect on acetic acid fermentation

Food Bioengineering, Volume 2, Issue 3, Page 233-241, September 2023., 2023
In this present work, the presence of quorum‐sensing (QS) in Acetobacter pasteurianus was demonstrated, and N‐acyl‐homoserine lactones N‐C4‐HSL and N‐C8‐HSL were identifying as the signal molecules. And, the effects of QS signal molecules and overexpression of a potential N‐acylhomoserine lactonase 0046 on acetic acid fermentation were analyzed ...
Hang Zhao, Zhiwei Feng, Xueli Han, Jiao Wang, Ying Xu, Weizhao Li, Yu Zheng, Min Wang   +7 more
wiley   +1 more source

5‐(3′,4′‐Dihydroxyphenyl)‐γ‐Valerolactone Is a Substrate for Human Paraoxonase: A Novel Pathway in Flavan‐3‐ol Metabolism

Molecular Nutrition &Food Research, Volume 67, Issue 17, September 2023., 2023
Flavan‐3‐ols are important food bioactives and levels of certain metabolites are thought to be solely derived from action of the gut microbiome. However, the authors show that a family of human enzymes, paraoxonases, are key players modulating levels of these metabolites.
Tony Y. Momma, Gunter G. C. Kuhnle, Reedmond Y. Fong, Jodi L. Ensunsa, Alan Crozier, Hagen Schroeter, Javier I. Ottaviani   +6 more
wiley   +1 more source

Labrenzia sp. BM1: A Quorum Quenching Bacterium That Degrades N-acyl Homoserine Lactones via Lactonase Activity

Sensors, 2014
We report the degradation of quorum sensing N-acylhomoserine lactone molecules by a bacterium isolated from a Malaysian marine water sample. MALDI-TOF and phylogenetic analysis indicated this isolate BM1 clustered closely to Labrenzia sp.
Norshazliza Ab Ghani, Siti Nur Maisarah Norizan, Xin Yue Chan, Wai-Fong Yin, Kok-Gan Chan   +4 more
doaj   +1 more source

Evaluation of a new high-throughput method for identifying quorum quenching bacteria [PDF]

, 2013
Quorum sensing (QS) is a population-dependent mechanism for bacteria to synchronize social behaviors such as secretion of virulence factors. The enzymatic interruption of QS, termed quorum quenching (QQ), has been suggested as a promising alternative ...
Bossier, Peter, Coenye, Tom, Shi, Xiaochong, Tang, Kaihao, Yu, Min, Zhang, Xiao-Hua, Zhang, Yunhui   +6 more
core   +2 more sources