Results 51 to 60 of about 10,030 (185)

The luxS mutation causes loosely-bound biofilms in Shewanella oneidensis

BMC Research Notes, 2011
Background The luxS gene in Shewanella oneidensis was shown to encode an autoinducer-2 (AI-2)-like molecule, the postulated universal bacterial signal, but the impaired biofilm growth of a luxS deficient mutant could not be restored by AI-2, indicating ...
Wagner-Döbler Irene, Wissing Josef, Jänsch Lothar, Bodor Agnes M   +3 more
doaj   +1 more source

FabR regulates Salmonella biofilm formation via its direct target FabB [PDF]

, 2016
Background: Biofilm formation is an important survival strategy of Salmonella in all environments. By mutant screening, we showed a knock-out mutant of fabR, encoding a repressor of unsaturated fatty acid biosynthesis (UFA), to have impaired biofilm ...
De Coster, David, De Keersmaecker, Sigrid CJ, Hermans, Kim, Kint, Gwendoline, Marchal, Kathleen, Roberfroid, Stefanie, Steenackers, Hans P, Thijs, Inge M, Vanderleyden, Jos   +8 more
core   +4 more sources

Genome-wide survey and phylogeny of S-Ribosylhomocysteinase (LuxS) enzyme in bacterial genomes [PDF]

, 2016
Background: The study of survival and communication of pathogenic bacteria is important to combat diseases caused by such micro-organisms. Bacterial cells communicate with each other using a density-dependent cell-cell communication process called ...
Pasha, Shaik Naseer., Rao, Rajas.M., Sowdhamini, Ramanathan.   +2 more
core   +9 more sources

Quorum sensing in Porphyromonas gingivalis and oral microbial interactions: a scoping review

Frontiers in Oral Health
ObjectivePorphyromonas gingivalis, a major periodontal pathogen, interacts with other oral microbes through quorum sensing, enhancing its growth and virulence, which contributes to periodontitis.
Zelda Ziyi Zhao, Wenwen Shan, Lifeng Guo, Chun Hung Chu, Jing Zhang, Jing Zhang   +5 more
doaj   +1 more source

Dietary supplementation with D-ribose enhances growth performance, improves serum antioxidant capacity, and inhibits rumen microbial LuxS/AI-2 quorum sensing of Hu sheep [PDF]

Animal Bioscience
Objective The objective of this study was to investigate the effects of dietary D-ribose supplementation on the growth performance, nutrient digestibility, serum biochemistry, rumen fermentation characteristics, and microbial LuxS/autoinducer-2 (AI-2 ...
Jing Ge, Yanjiao Li, Xianghui Zhao, Kehui Ouyang, Mingren Qu, Qinghua Qiu   +5 more
doaj   +1 more source

Comment on "Effect of biofilm formation by clinical isolates of Helicobacter pylori on the efflux-mediated resistance to commonly used antibiotics". [PDF]

, 2017
Attaran et al[1] have recently shown that decreased susceptibility of established Helicobacter pylori (H. pylori) biofilms to specific antibiotics, was associated with the overtly enhanced transcription of two efflux pump genes, hp1165 and hefA, involved
Deretzi, Georgia, Dorrell, Nick, Kazakos, Evangelos I, Kountouras, Jannis, Polyzos, Stergios A   +4 more
core   +1 more source

Autoinducer-2 Production in Campylobacter jejuni Contributes to Chicken Colonization [PDF]

Applied and Environmental Microbiology, 2009
ABSTRACT Inactivation of luxS , encoding an AI-2 biosynthesis enzyme, in Campylobacter jejuni strain 81-176 significantly reduced colonization of the chick lower gastrointestinal tract, chemotaxis toward organic acids, and in vitro adherence to LMH chicken hepatoma cells. Thus, AI-2
Beatriz, Quiñones, William G, Miller, Anna H, Bates, Robert E, Mandrell   +3 more
openaire   +2 more sources

Assessment of the effect of a Salmonella enterica ser. Typhimurium culture supernatant on the single-cell lag time of foodborne pathogens [PDF]

, 2015
The objective of this study was the in vitro evaluation of the effect of a cell-free microbial supernatant, produced by a luxS-positive Salmonella enterica ser. Typhimurium strain, on the single-cell growth kinetic behavior of two strains of S. enterica (
Alexandra, Lianou, George-John, Nychas E., Vasiliki, Blana A.   +2 more
core   +1 more source

Autoinducer 2: a concentration‐dependent signal for mutualistic bacterial biofilm growth [PDF]

Molecular Microbiology, 2006
Summary4,5‐dihydroxy‐2,3‐pentanedione (DPD), a product of the LuxS enzyme in the catabolism of S‐ribosylhomocysteine, spontaneously cyclizes to form autoinducer 2 (AI‐2). AI‐2 is proposed to be a universal signal molecule mediating interspecies communication among bacteria.
Alexander H, Rickard, Robert J, Palmer, David S, Blehert, Shawn R, Campagna, Martin F, Semmelhack, Paul G, Egland, Bonnie L, Bassler, Paul E, Kolenbrander   +7 more
openaire   +2 more sources

Potential for luxS related signalling in marine bacteria and production of autoinducer-2 in the genus Shewanella [PDF]

, 2008
BACKGROUND: The autoinducer-2 (AI-2) group of signalling molecules are produced by both Gram positive and Gram negative bacteria as the by-product of a metabolic transformation carried out by the LuxS enzyme. They are the only non species-specific quorum
Agnes Bodor, Bettina Elxnat, Verena Thiel, Stefan Schulz, Irene Wagner-Döbler   +4 more
core   +1 more source