Results 41 to 50 of about 5,057 (176)

The Assimilation of γ-Butyrolactone in Agrobacterium tumefaciens C58 Interferes with the Accumulation of the N-Acyl-Homoserine Lactone Signal

Molecular Plant-Microbe Interactions, 2004
Agrobacterium tumefaciens C58 communicates using N-acyl-homoserine lactones (acyl-HSL) and contains two lactonase-encoding genes, attM and aiiB, the products of which are capable of inactivating the acyl-HSL signal. In A.
Aurélien Carlier, Romain Chevrot, Yves Dessaux, Denis Faure   +3 more
doaj   +1 more source

Acyl homoserine lactone-based quorum sensing in a methanogenic archaeon [PDF]

The ISME Journal, 2012
Abstract Acyl homoserine lactone (AHL)-based quorum sensing commonly refers to cell density-dependent regulatory mechanisms found in bacteria. However, beyond bacteria, this cell-to-cell communication mechanism is poorly understood. Here we show that a methanogenic archaeon, Methanosaeta harundinacea 6Ac, encodes an active quorum sensing
Guishan, Zhang, Fan, Zhang, Gang, Ding, Jie, Li, Xiaopeng, Guo, Jinxing, Zhu, Liguang, Zhou, Shichun, Cai, Xiaoli, Liu, Yuanming, Luo, Guifeng, Zhang, Wenyuan, Shi, Xiuzhu, Dong   +12 more
openaire   +2 more sources

Quorum Sensing Activity of Aeromonas Caviae Strain YL12, A Bacterium Isolated from Compost

Sensors, 2014
Quorum sensing is a well-studied cell-to-cell communication method that involves a cell-density dependent regulation of genes expression mediated by signalling molecules. In this study, a bacterium isolated from a plant material compost pile was found to
Yan-Lue Lim, Robson Ee, Wai-Fong Yin, Kok-Gan Chan   +3 more
doaj   +1 more source

Evolution of Acyl-Substrate Recognition by a Family of Acyl-Homoserine Lactone Synthases

PLoS ONE, 2014
Members of the LuxI protein family catalyze synthesis of acyl-homoserine lactone (acyl-HSL) quorum sensing signals from S-adenosyl-L-methionine and an acyl thioester. Some LuxI family members prefer acyl-CoA, and others prefer acyl-acyl carrier protein (ACP) as the acyl-thioester substrate.
Christensen, Quin H., Brecht, Ryan M., Dudekula, Dastagiri, Greenberg, E. Peter, Nagarajan, Rajesh   +4 more
openaire   +5 more sources

Specificity of Acyl-Homoserine Lactone Synthases Examined by Mass Spectrometry [PDF]

Journal of Bacteriology, 2006
ABSTRACT Many gram-negative bacteria produce a specific set of N -acyl- l -homoserine-lactone (AHL) signaling molecules for the purpose of quorum sensing, which is a means of regulating coordinated gene expression in a cell-density-dependent manner.
Ty A, Gould, Jake, Herman, Jessica, Krank, Robert C, Murphy, Mair E A, Churchill   +4 more
openaire   +2 more sources

Selectivity and Efficiency of Conductive Molecularly Imprinted Polymer (c-MIP) Based on 5-Phenyl-Dipyrromethane and 5-Phenol-Dipyrromethane for Quorum Sensing Precursors Detection

Chemosensors, 2017
Functional polymers that selectively recognize target compounds are developed by imprinting polymerization. In the present paper, two different dipyrromethanes, 5-phenol-dipyrromethane (5-pOH-DP) and 5-phenyl-dipyrromethane (5-ph-DP), are synthetized and
Sabina Susmel, Clara Comuzzi
doaj   +1 more source

A New Acyl-homoserine Lactone Molecule Generated by Nitrobacter winogradskyi [PDF]

Scientific Reports, 2016
AbstractIt is crucial to reveal the regulatory mechanism of nitrification to understand nitrogen conversion in agricultural systems and wastewater treatment. In this study, the nwiI gene of Nitrobacter winogradskyi was confirmed to be a homoserine lactone synthase by heterologous expression in Escherichia coli that synthesized several acyl-homoserine ...
Qiuxuan Shen, Jie Gao, Jun Liu, Shuangjiang Liu, Zijun Liu, Yinghuan Wang, Baoyuan Guo, Xuliang Zhuang, Guoqiang Zhuang   +8 more
openaire   +2 more sources

Degradation of Bacterial Quorum Sensing Signaling Molecules by the Microscopic Yeast Trichosporon loubieri Isolated from Tropical Wetland Waters

Sensors, 2013
Proteobacteria produce N-acylhomoserine lactones as signaling molecules, which will bind to their cognate receptor and activate quorum sensing-mediated phenotypes in a population-dependent manner.
Cheng-Siang Wong, Chong-Lek Koh, Choon-Kook Sam, Jian Woon Chen, Yee Meng Chong, Wai-Fong Yin, Kok-Gan Chan   +6 more
doaj   +1 more source

Autonomous Control of Gene Expression Using Endogenous Transcription Signals

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Autonomous cell‐based control of heterologous gene expression can simplify batch‐culture bioprocessing by eliminating external monitoring and extrinsic control of culture conditions. Existing approaches use auto‐induction media, synthetic cell‐cell communication systems, or application‐specific biosensors.
Pakpoom Subsoontorn, Drew Endy, Olivier Borkowski   +2 more
wiley   +1 more source

Acyl Homoserine Lactone Production of Brewery Process Surface Bacteria [PDF]

Journal of the Institute of Brewing, 2011
The aim of this study was to find out whether the first bacterial colonizers of brewery process surfaces after washing produce acyl homoserine lactone (AHL) quorum sensing signalling molecules. Microbial attachment and biofilm formation was studied by mounting sterile uncoated and coated stainless steel coupons onto critical places of the filling ...
Priha, Outi, Juvonen, Riikka, Tapani, Kaisa, Storgårds, Erna   +3 more
openaire   +1 more source