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Quorum sensing is a regulatory system used by bacteria for controlling gene expression in response to increasing cell density. Controlling bacterial infections by quenching their quorum sensing systems is a promising field of study. The expression of specific target genes, such as transcriptional regulators belonging to the LuxR family of proteins, is coordinated by the synthesis of diffusible acylhomoserine lactone (AHL) molecules. N-tetradecanoyl-L-Homoserine lactone (C14-HSL) is a small diffusible signaling molecule involved in quorum sensing, thereby controlling gene expression and affecting cellular metabolism in bacteria.[1],[2],[3] It appears later than shorter acyl chain AHLs in developing biofilms[4] and, like other long chain AHLs, stimulates bacterial growth.[5] C14-HSL also alters the proteolytic activity and enhances the migration of some strains of Proteus mirabilis.[6]

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