. Author manuscript; available in PMC: 2017 Jul 1.

Published in final edited form as: Appl Microbiol Biotechnol. 2016 May 28;100(14):6141–6148. doi: 10.1007/s00253-016-7596-3

Table 1.

Structure and functions of key alkyl-quinolones

	Nomenclature	Functions
PQS	2- heptyl-3-hydroxy-4(1H)-quinolone (Pseudomonas quinolone signal)	• quorum sensing - virulence gene expression • iron chelation • vesicle formation
HHQ	2-heptyl-4-hydroxyquinoline	• quorum sensing - virulence gene expression • signaling - phenazine production
HQNO	2-heptyl-4-hydroxyquinoline N-oxide	• cytochrome bc₁ complex inhibitor