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. Author manuscript; available in PMC: 2008 Nov 28.
Published in final edited form as: Chem Soc Rev. 2008 Jun 2;37(7):1432–1447. doi: 10.1039/b703021p

Fig. 3.

Fig. 3

Autoinduction loop in QS: (1) AHLs are produced by LuxI-type synthase proteins (I); (2) above a critical concentration they bind to a LuxR-type receptor (R), (3) following dimerization, this receptor:ligand complex acts as a transcription factor to produce more I protein and control other essential functions of QS.