Naturally occurring R.ColBM plasmids belonging to the IncFIII incompatibility group

Journal of General Microbiology
A SasarmanR Morisset

Abstract

Two Escherichia coli strains isolated from urinary tract infections were resistant to streptomycin, kanamycin, neomycin, tetracycline and sulphonamides. The strains also produced colicins B and M. The resistance to streptomycin, kanamycin and neomycin and the ability to produce colicins B and M could be transferred to an E. coli K12 recipient. Resistance and colicinogeny markers were transferred together by conjugation, and did not segregate even after interrupted mating or phage P1-mediated transduction. Hence, the drug-resistance and colicinogeny markers were carried by the same plasmid, designated as R.ColBM plasmid. The two R.ColBM plasmids were Fi+ and produced an F-like pilus. They belonged to the IncFIII incompatibility group, being thus the first R plasmids identified in this group. The two plasmids were isolated and their molecular sizes were determined by electrophoresis in agarose gels and by contour length measurements. Both methods showed that both plasmids were about 52 megadaltons.

Citations

Sep 1, 1988·European Journal of Epidemiology·E FileticiM Fantasia
Jan 1, 1984·Molecular & General Genetics : MGG·T OlschlägerV Braun
Dec 1, 2009·Microbiology and Molecular Biology Reviews : MMBR·Timothy J Johnson, Lisa K Nolan
Nov 13, 2010·BMC Microbiology·Simona KamenšekDarja Zgur-Bertok
Feb 21, 2013·BMC Microbiology·Simona Kamenšek, Darja Žgur-Bertok
Apr 18, 2009·Microbiology·Julia K Christenson, David M Gordon

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