Effect of a trifluoromethyl ketone on the motility of proton pump-deleted mutant of Escherichia coli strain and its wild-type

Annamaria Molnár, Krisztina Wolfart, Masami Kawase, Noboru Motohashi, Joseph Molnár

Research output: Contribution to journalArticle

7 Citations (Scopus)


We have recently found that 1-(2-benzoxazolyl)-3,3,3-trifluoro-2-propanone [TF18] exhibited the most potent antibacterial activity among 30 trifluoromethyl ketones against various prokaryotes, such as Escherichia coli (E. coli). In the present study, the inhibition of E. coli motility by TF18 was investigated. TF18 showed the lowest minimum inhibitory concentration (MIC) and highest inhibitory effect on the motility of E. coli strains. The wild-type E. coli was more sensitive to inhibition of motility than its proton pump-deleted mutant strain at subinhibitory concentrations. These data suggest that one of the targets of the antibacterial effect of the trifluoromethyl ketone is the proton pump system.

Original languageEnglish
Pages (from-to)505-508
Number of pages4
JournalIn Vivo
Issue number4
Publication statusPublished - Jul 1 2004



  • Escherichia coli
  • Motility
  • Proton pump
  • Trifluoromethyl ketone

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology

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