Promoter selectivity of the RhlR quorum-sensing transcription factor receptor in Pseudomonas aeruginosa is coordinated by distinct and overlapping dependencies on C4-homoserine lactone and PqsE. - Keegan NR; Colón Torres NJ; Stringer AM; Prager LI; Brockley MW; McManaman CL; Wade JT; Paczkowski JE (PLoS genetics, 2023)