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Quorum sensing (QS) pathways of Pseudomonas aeruginosa. P. aeruginosa uses N-acylhomoserine lactones (AHLs) and alkylquinolines (AQ) mediated QS systems to control the production of virulence factors and the interaction with the host. The balance between these signalling mechanisms is also a key determinant in biofilm formation. 3OC12-HSL: N-(3-oxo-dodecanoyl)-L-homoserine lactone; C4-HSL: N-butanoyl-L-homoserine lactone; HHQ: 2-heptyl-4-quinolone; PQS: Pseudomonas quinolone signal.
