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. It appears later than shorter acyl chain AHLs in developing biofilms4 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
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