Results 11 to 20 of about 688,717 (308)

Sinorhizobium meliloti, a bacterium lacking the autoinducer‐2 (AI‐2) synthase, responds to AI‐2 supplied by other bacteria [PDF]

Molecular Microbiology, 2008
SummaryMany bacterial species respond to the quorum‐sensing signal autoinducer‐2 (AI‐2) by regulating different niche‐specific genes. Here, we show that Sinorhizobium meliloti, a plant symbiont lacking the gene for the AI‐2 synthase, while not capable of producing AI‐2 can nonetheless respond to AI‐2 produced by other species.
Pereira, C. S., McAuley, J. R., Taga, M. E., Xavier, K. B., Miller, Stephen T.   +4 more
openaire   +6 more sources

Processing the Interspecies Quorum-sensing Signal Autoinducer-2 (AI-2) [PDF]

Journal of Biological Chemistry, 2011
The molecule (S)-4,5-dihydroxy-2,3-pentanedione (DPD) is produced by many different species of bacteria and is the precursor of the signal molecule autoinducer-2 (AI-2).
João C. Marques, Pedro Lamosa, Caitlin Russell, Rita Ventura, Christopher Maycock, Martin F. Semmelhack, Stephen T. Miller, Karina B. Xavier   +7 more
openaire   +6 more sources

Photoplethysmogram Biometric Authentication Using a 1D Siamese Network

Sensors, 2023
In the head-mounted display environment for experiencing metaverse or virtual reality, conventional input devices cannot be used, so a new type of nonintrusive and continuous biometric authentication technology is required.
Chae Lin Seok, Young Do Song, Byeong Seon An, Eui Chul Lee   +3 more
doaj   +1 more source

Evaluation of multi-stage fracturing a horizontal well of low permeability reservoirs in East China Sea [PDF]

Youqicang pingjia yu kaifa, 2023
Staged fracturing technology for offshore horizontal wells is still in an exploratory phase due to operational limitations. The effectiveness of fracturing horizontal wells has a significant impact on their productivity.
ZHANG Fengxi, NIU Congcong, ZHANG Yichi
doaj   +1 more source

Modulation of Campylobacter jejuni Motility, Adhesion to Polystyrene Surfaces, and Invasion of INT407 Cells by Quorum-Sensing Inhibition

Microorganisms, 2020
Campylobacter jejuni is a major foodborne pathogen, and the LuxS-mediated quorum-sensing (QS) system influences its motility, biofilm formation, invasion, host colonization, and virulence. QS therefore represents a target for the control of C.
Katarina Šimunović, Dina Ramić, Changyun Xu, Sonja Smole Možina   +3 more
doaj   +1 more source

Integration of AI-2 Based Cell-Cell Signaling with Metabolic Cues in Escherichia coli [PDF]

, 2016
Citation: Mitra, A., Herren, C. D., Patel, I. R., Coleman, A., & Mukhopadhyay, S. (2016). Integration of AI-2 Based Cell-Cell Signaling with Metabolic Cues in Escherichia coli. Plos One, 11(6), 19.
Coleman, A., Herren, Christopher D., Mitra, A., Mukhopadhyay, S., Patel, I. R.   +4 more
core   +10 more sources

Let LuxS speak up in AI-2 signaling [PDF]

Trends in Microbiology, 2006
Quorum sensing is a process of bacterial cell-cell communication that uses small diffusible molecules to coordinate diverse behaviors in response to population density. The only quorum-sensing system shared by Gram-positive and Gram-negative bacteria involves the production of autoinducer-2 (AI-2). The AI-2 synthase LuxS is widely distributed among the
De Keersmaecker, Sigrid, Sonck, Kathleen, Vanderleyden, Jozef   +2 more
openaire   +3 more sources

AI-2-dependent gene regulation in Staphylococcus epidermidis [PDF]

BMC Microbiology, 2008
Abstract Background Autoinducer 2 (AI-2), a widespread by-product of the LuxS-catalyzed S-ribosylhomocysteine cleavage reaction in the activated methyl cycle, has been suggested to serve as an intra- and interspecies signaling molecule, but in many bacteria AI-2 control of gene expression is not completely understood.
Sturdevant Daniel E, Vadyvaloo Viveka, Villaruz Amer E, Li Min, Otto Michael   +4 more
openaire   +3 more sources

Effects of geometrical feature on Forchheimer-flow behavior through rough-walled rock fractures

Yantu gongcheng xuebao, 2021
In order to study the relationship between the geometrical feature and the nonlinear flow properties of rough-walled rock fractures, a numerical model based on the fractal behavior is proposed to characterize the three-dimensional geometry of rough ...
ZHOU Xin 1, 2, SHENG Jian-long 1, 2, YE Zu-yang 1, 2, LUO Wang 1, 2, HUANG Shi-bing 1, 2, CHENG Ai-ping 1, 2
doaj   +1 more source

Aspect-Based Sentiment Analysis Model with Multiple Grammatical Information [PDF]

Jisuanji kexue yu tansuo, 2022
The aim of aspect based sentiment analysis (ABSA) is to classify the sentiment polarity towards a particular aspect in a sentence. Existing approaches usually apply attention mechanism to modeling the connection between aspects and opinion expression in ...
XIAO Zeguan, CHEN Qingliang
doaj   +1 more source