Broad-spectrum peptide inhibitors of aminoglycoside antibiotic resistance enzymes

David D. Boehr, Kari Ann Draker, Kalinka Koteva, Manjeet Bains, Robert E. Hancock, Gerard D. Wright

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


The action of aminoglycoside antibiotics is inhibited by chemical modification catalyzed by aminoglycoside inactivating enzymes, which bind these cationic saccharides with active site pockets that contain a preponderance of negatively charged residues. In this study, it was observed that several cationic antimicrobial peptides, representing different structural classes, could serve as inhibitors of such aminoglycoside resistance enzymes. The bovine antimicrobial peptide indolicidin and synthetic analogs appeared to be especially effective against a range of resistance enzymes, inhibiting enzymes belonging to both aminoglycoside phosphotransferase and aminoglycoside acetyltransferase classes, where the mode of action was dependent on the class of antibiotic resistance enzyme. These peptides represent the first example of broad-spectrum inhibitors of aminoglycoside resistance enzymes.

Original languageEnglish
Pages (from-to)189-196
Number of pages8
JournalChemistry and Biology
Issue number2
Publication statusPublished or Issued - 1 Feb 2003
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmacology
  • Drug Discovery
  • Clinical Biochemistry

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