Bioorganic Chemistry (2020)
Update date:2022-08-10
Topics:
Jeanneau, Erwann
Queneau, Yves
Soulère, Laurent
Zhang, Qiang
The synthesis and the QS modulation activity of diastereoisomerically pure 2-hydroxy-N-acyl-L-homoserine lactones (2-OH-AHLs) are unveiled. (2R)- and (2S)- 2-hydroxy-N-hexanoyl-L-homoserine lactone and 2-hydroxy-N-octanoyl-L-homoserine lactone have been identified as very potent QS agonists and antagonists on the Vibrio fischeri-quorum sensing system with opposite activities depending on the configuration of the carbon atom with the hydroxyl group. Flexible molecular docking showed that the (2R)–OH configuration in the antagonist isomer induces new hydrogen bonds with Tyr70 and Asp79, two importantly conserved residues in the LuxR protein family, while the (2S)–OH agonist configuration exhibits a binding mode comparable to the natural ligand 3-oxo-hexanoyl-L-homoserine lactone (OHHL). For the analogs with long alkyl chain 3a and 3b and aromatic analogs, all are antagonists with no effect of the configuration at C-2.
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