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• W2896857795 abstract "Quorum sensing (QS) allows many common bacterial pathogens to coordinate group behaviors such as virulence factor production, host colonization, and biofilm formation at high population densities. This cell–cell signaling process is regulated by N - acyl L-homoserine lactone (AHL) signals, or autoinducers, and LuxR-type receptors in Gram - negative bacteria. SdiA is an orphan LuxR-type receptor found in Escherichia, Salmonella, Klebsiella, and Enterobacter genera that responds to AHL signals produced by other species and regulates genes involved in several aspects of host colonization. The inhibition of QS using non-native small molecules that target LuxR-type receptors offers a non-biocidal approach for studying, and potentially controlling, virulence in these bacteria. To date, few studies have characterized the features of AHLs and other small molecules capable of SdiA agonism, and no SdiA antagonists have been reported. Herein, we report the screening of a set of AHL analogs to both uncover agonists and antagonists of SdiA and to start to delineate structure–activity relationships (SARs) for SdiA:AHL interactions. Using a cell-based reporter of SdiA in Salmonella enterica serovar Typhimurium, several non-natural SdiA agonists and the first set of SdiA antagonists were identified and characterized. These compounds represent new chemical probes for exploring the mechanisms by which SdiA functions during infection and its role in interspecies interactions. Moreover, as SdiA is highly stable when produced in vitro, these compounds could advance fundamental studies of LuxR-type receptor:ligand interactions that engender both agonism and antagonism." @default.
• W2896857795 created "2018-10-26" @default.
• W2896857795 creator A5071821542 @default.
• W2896857795 creator A5072500902 @default.
• W2896857795 date "2018-10-17" @default.
• W2896857795 modified "2023-10-17" @default.
• W2896857795 title "Non-native autoinducer analogs capable of modulating the SdiA quorum sensing receptor in <i>Salmonella enterica</i> serovar Typhimurium" @default.
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• W2896857795 doi "https://doi.org/10.3762/bjoc.14.243" @default.
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• W2896857795 hasPublicationYear "2018" @default.
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