Table 1.

MICs (milligrams per liter) of various antimicrobial agents for HN891 (an overproducer of the Acr pump), SH5014 (parent strain), and SH7616 (an acr mutant)

Antimicrobial agentMIC for indicated strain
HN891SH5014SH7616
Sodium dodecyl sulfate>16,000>16,00064
Sodium deoxycholate>16,000>16,0001,024
Sodium cholate>64,000>64,0001,024
Triton X-100>64,000>64,000256
Crystal violet>256>2561
Acriflavine>128>12832
Fusidic acid>5125124
Novobiocin>256641
Erythromycin A1,0245128
Rifampin16168
Tetracycline210.25
Chloramphenicol840.25
Norfloxacin10.240.03
Nalidixic acid840.5
Penicillin G3280.25