N-Acetyltyramine is the active compound extracted from a fermentation broth of strain M3-10 which produces quorum-sensing inhibitor (QSI) compound. N-Acetyltyramine inhibits Chromobacterium violaceum ATCC 12472 violacein production and virulence factors, such as pyoverdine production, as well as swarming and twitching motilities, produced by Pseudomonas aeruginosa PAO1.

Indolicidin is comprised of 13 amino acids, 5 of which are tryptophan residues, and the carboxylterminal arginine is carboxamidated. Indolicidin has the highest tryptophan content of any known protein.Indolicidin is comprised of 13 amino acids, 5 of which are tryptophan residues, and the carboxylterminal arginine is carboxamidated.

JCP251 is a selective small molecule inhibitor of S. aureus serine hydrolase FphB, effectively reduces infectivity in vivo.