The Order Bacillales Hosts Functional Homologs of the Worrisome cfr Antibiotic Resistance Gene

Lykke H. Hansen, Mercè H. Planellas, Katherine S. Long, Birte Vester

Research output: Contribution to journalJournal articleResearchpeer-review

479 Downloads (Pure)

Abstract

The cfr gene encodes the Cfr methyltransferase that methylates a single adenine in the peptidyl transferase region of bacterial ribosomes. The methylation provides resistance to several classes of antibiotics that include drugs of clinical and veterinary importance. This paper describes a first step toward elucidating natural residences of the worrisome cfr gene and functionally similar genes. Three cfr-like genes from the order Bacillales were identified from BLAST searches and cloned into plasmids under the control of an inducible promoter. Expression of the genes was induced in Escherichia coli, and MICs for selected antibiotics indicate that the cfr-like genes confer resistance to PhLOPSa (phenicol, lincosamide, oxazolidinone, pleuromutilin, and streptogramin A) antibiotics in the same way as the cfr gene. In addition, modification at A2503 on 23S rRNA was confirmed by primer extension. Finally, expression of the Cfr-like proteins was verified by SDS gel electrophoresis of whole-cell extracts. The work shows that cfr-like genes exist in the environment and that Bacillales are natural residences of cfr-like genes.
Original languageEnglish
JournalAntimicrobial Agents and Chemotherapy
Volume56
Issue number7
Pages (from-to)3563-3567
ISSN0066-4804
DOIs
Publication statusPublished - 2012

Fingerprint Dive into the research topics of 'The Order Bacillales Hosts Functional Homologs of the Worrisome cfr Antibiotic Resistance Gene'. Together they form a unique fingerprint.

Cite this