Results 71 to 80 of about 13,467 (186)

TraI, a LuxI homologue, is responsible for production of conjugation factor, the Ti plasmid N-acylhomoserine lactone autoinducer. [PDF]

Proceedings of the National Academy of Sciences, 1994
Conjugal transfer of the nopaline-type Agrobacterium Ti plasmid pTiC58 is regulated by a transcriptional activator, TraR, and a diffusible signal molecule, conjugation factor (CF). CF is a member of a family of substituted homoserine lactones (HSLs) that act as coinducers for regulating gene expression in diverse Gram-negative bacteria by a mechanism ...
Hwang, Ingyu, Li, Pei-Li, Zhang, Lianhui, Piper, Kevin R., Cook, David M., Tate, Max E., Farrand, Stephen K.   +6 more
openaire   +4 more sources

Screening of Synergistic Composite Essential Oil Targeting Quorum Sensing Inhibition in Pseudomonas fluorescens and Its Effect on the Quality of Freshly Prepared Meat

Journal of Food Processing and Preservation, Volume 2026, Issue 1, 2026.
This study aimed to develop plant‐derived green preservatives for freshly prepared meat. Using Chromobacterium violaceum 026 (CV026) as the reporter strain and Pseudomonas fluorescens, a dominant meat spoilage bacterium, as the target, we screened for a composite essential oil (CEO) with quorum sensing (QS) inhibitory and synergistic antibacterial ...
Yuhua Zhang, Yi Meng, Shumei Wang, Lijuan Li, Qianqian Ma, Lin Xu, Yijing Li, Changfeng Zhang, Essam Hebishy   +8 more
wiley   +1 more source

Design and Synthesis of Triazole‐Based p‐tert‐Butylcalix[4]Arene Conjugates and Evaluation of Their Antimicrobial, Antibiofilm, and Anti‐Quorum‐Sensing Activities

Biotechnology and Applied Biochemistry, Volume 72, Issue 6, Page 1546-1559, December 2025.
ABSTRACT Macrocyclic calix[n]arenes have many applications, with diverse structures that can easily be functionalized either on upper or lower rims, mostly to impart solubility and improve biological activities. In this study, triazole‐based p‐tert‐butylcalix[4]arene conjugates (AT10a and AT10b) and their p‐tert‐butylphenol analogs (AT10b and AT11b ...
Alfred Ngenge Tamfu, Selahattin Bozkurt, Ozgur Ceylan   +2 more
wiley   +1 more source

Bacterial N-acylhomoserine lactone-induced apoptosis in breast carcinoma cells correlated with down-modulation of STAT3 [PDF]

Oncogene, 2004
Cell growth is promoted by mitogens and survival factors, which activate intracellular signalling pathways to control cell cycle progression and cellular integrity. Proliferation signals are transmitted through Ras and Rho family small G-proteins coupled to mitogen-activated protein kinase (MAPK) cascades, while survival signals are propagated by lipid-
Li, Li, Doreen, Hooi, Siri Ram, Chhabra, David, Pritchard, Peter E, Shaw   +4 more
openaire   +2 more sources

Characteristics of N-Acylhomoserine Lactones Produced by Hafnia alvei H4 Isolated from Spoiled Instant Sea Cucumber

Sensors, 2017
This study aimed to identify N-acylhomoserine lactone (AHL) produced by Hafnia alvei H4, which was isolated from spoiled instant sea cucumber, and to investigate the effect of AHLs on biofilm formation.
Hong-Man Hou, Yao-Lei Zhu, Jia-Ying Wang, Feng Jiang, Wen-Yan Qu, Gong-Liang Zhang, Hong-Shun Hao   +6 more
doaj   +1 more source

Attenuated Strains of Pseudomonas aeruginosa: A Promising Cell Factory for Rhamnolipid Production

Microbial Biotechnology, Volume 18, Issue 11, November 2025.
PGN strains are generated by the deletion of virulence factor genes. The metabolic pathways and regulatory frameworks that lead to high‐efficiency production of rhamnolipids in P. aeruginosa are preserved in these strains. Therefore, PGN strains are promising bio‐safe cell factories for the industrial production of rhamnolipids.
Parvathy V. Das, Meagan E. Valentine, Timothy E. Long, Hongwei D. Yu   +3 more
wiley   +1 more source

N-acetylglucosamine inhibits LuxR, LasR and CviR based quorum sensing regulated gene expression levels

Frontiers in Microbiology, 2016
N-acetyl glucosamine, the monomer of chitin, is an abundant source of carbon and nitrogen in nature as it is the main component and breakdown product of many structural polymers. Some bacteria use N-acyl-L-homoserine lactone (AHL) mediated quorum sensing
Onder Kimyon, Zehra Ipek Uluturk, Shashidhar Nizalapur, Matthew Lee, Samuel K Kutty, Sabrina Beckmann, Naresh Kumar, Mike Manefield   +7 more
doaj   +1 more source

Serratia spp. bacteria evolved in Aotearoa‐New Zealand for infection of endemic scarab beetles

New Zealand Journal of Zoology, Volume 52, Issue 2, Page 121-143, June 2025.
ABSTRACT The Melolonthinae branch of the beetle family Scarabaeidae has evolved in isolation in Aotearoa, radiating into >100 endemic species, since Aotearoa separated from Gondwanaland 82 million years ago. The group includes important pasture pests, such as the New Zealand grass grub Costelytra giveni and the manuka beetle Pyronota festiva.
Mark R. H. Hurst, Maureen O’Callaghan, Travis R. Glare, Trevor A. Jackson   +3 more
wiley   +1 more source

Classifying the Topology of AHL-Driven Quorum Sensing Circuits in Proteobacterial Genomes

Sensors, 2012
Virulence and adaptability of many Gram-negative bacterial species are associated with an <em>N</em>-acylhomoserine lactone (AHL) gene regulation mechanism called quorum sensing (QS).
Sándor Pongor, Vittorio Venturi, Borisz Galbáts, Zsolt Gelencsér, Kumari Sonal Choudhary, Bruna Goncalves Coutinho, Sanjarbek Hudaiberdiev   +6 more
doaj   +1 more source

Diversity‐Oriented Synthesis and Antibiofilm Evaluation of Furan‐2‐Carboxamides

ChemMedChem, Volume 20, Issue 9, May 5, 2025.
Navigating through the chemical space of antibiofilm agents! Furan‐2‐carboxamides inhibit the production of this extracellular shield in Pseudomonas aeruginosa by modulating the linkers and substituents of the central core. The discovery offers a solution to the metabolically unstable antibiofilm agents based on furanones, leading to the design of more
Ana C. Muñoz‐Estrada, Cesar E. Tovar‐Roman, Carlos D. García‐Mejía, Rodolfo García‐Contreras, Eduardo Hernández‐Vázquez   +4 more
wiley   +1 more source