Results 41 to 50 of about 9,304 (223)

Ahl al-Ka'f [PDF]

open access: yesEncyclopédie berbère, 1986
Cette expression sert a designer les Sept Dormants, mot a mot « les gens de la caverne », par allusion a la sourate du meme nom (Coran, XVII, 9-27). Elle est connue dans tout le monde musulman. Son origine remonte a la legende chretienne des Sept Dormants d’Ephese adolescents qui, lors de la persecution de Dece, furent emmures vifs dans une caverne ...
openaire   +2 more sources

Simultaneous molecular docking of different ligands to His6-tagged organophosphorus hydrolase as an effective tool for assessing their effect on the enzyme [PDF]

open access: yesPeerJ, 2019
Background Enzymatic hydrolysis of N-acyl homoserine lactones (AHLs), which are signaling molecules responsible for the development of antibiotic resistance in gram-negative bacteria, is a potential solution to overcoming antibiotic resistance problem ...
Aysel Aslanli, Elena Efremenko
doaj   +2 more sources

A rhlI 5′ UTR-Derived sRNA Regulates RhlR-Dependent Quorum Sensing in Pseudomonas aeruginosa [PDF]

open access: yes, 2019
N-Acyl homoserine lactone (AHL) quorum sensing (QS) controls expression of over 200 genes in Pseudomonas aeruginosa. There are two AHL regulatory systems: the LasR-LasI circuit and the RhlR-RhlI system.
Addis, Victoria   +7 more
core   +1 more source

Detection, Characterization, and Biological Effect of Quorum-Sensing Signaling Molecules in Peanut-Nodulating Bradyrhizobia

open access: yesSensors, 2012
Bacteria of the genus Bradyrhizobium are able to establish a symbiotic relationship with peanut (Arachis hypogaea) root cells and to fix atmospheric nitrogen by converting it to nitrogenous compounds.
Walter Giordano   +3 more
doaj   +1 more source

Effects of gelling agent and extracellular signaling molecules on the culturability of marine bacteria [PDF]

open access: yes, 2017
Only 1% of marine bacteria are currently culturable using standard laboratory procedures, and this is a major obstacle for our understanding of the biology of marine microorganisms and for the discovery of novel microbial natural products. Therefore, the
Bentzon-Tilia, Mikkel   +4 more
core   +1 more source

The Presence of Plant-Associated Bacteria Alters Responses to N-acyl Homoserine Lactone Quorum Sensing Signals that Modulate Nodulation in Medicago Truncatula

open access: yesPlants, 2020
Bacteria use quorum sensing signaling for cell-to-cell communication, which is also important for their interactions with plant hosts. Quorum sensing via N-acyl-homoserine lactones (AHLs) is important for successful symbioses between legumes and nitrogen-
Debora F. Veliz-Vallejos   +2 more
doaj   +1 more source

Heterocyclic Chemistry Applied to the Design of N-Acyl Homoserine Lactone Analogues as Bacterial Quorum Sensing Signals Mimics

open access: yesMolecules, 2021
N-acyl homoserine lactones (AHLs) are small signaling molecules used by many Gram-negative bacteria for coordinating their behavior as a function of their population density.
Qiang Zhang   +6 more
doaj   +1 more source

The phenazine pyocyanin is a terminal signalling factor in the quorum sensing network of Pseudomonas aeruginosa [PDF]

open access: yes, 2006
Certain members of the fluorescent pseudomonads produce and secrete phenazines. These heterocyclic, redox-active compounds are toxic to competing organisms, and the cause of these antibiotic effects has been the focus of intense research efforts.
Dietrich, Lars E. P.   +4 more
core   +1 more source

Sulfakinin Signaling Sense Circulating Fructose and Suppresses Food Consumption via Insulin‐Like Peptide in Bactrocera Dorsalis

open access: yesAdvanced Science, EarlyView.
This study discovered a new pathway that tells fruit flies when to stop eating. It found that rising blood sugar (fructose) is detected by a sensor called GR43a. This triggers a chain reaction involving the satiety signal sulfakinin and its receptor, ultimately activating a final satiety signal, ILP5.
Hong‐Fei Li   +7 more
wiley   +1 more source

A Sinorhizobium meliloti-specific N-acyl homoserine lactone quorum-sensing signal increases nodule numbers in Medicago truncatula independent of autoregulation

open access: yesFrontiers in Plant Science, 2014
N-acyl homoserine lactones (AHLs) act as quorum sensing signals that regulate cell-density dependent behaviors in many gram-negative bacteria, in particular those important for plant-microbe interactions.
Debora Fabiola Veliz Vallejos   +3 more
doaj   +1 more source

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