Properties of an R Factor from Bordetella bronchiseptica
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چکیده
منابع مشابه
Properties of an R factor from Bordetella bronchiseptica.
R906, a plasmid derived from a wild strain of Bordetella bronchiseptica, was transferred to Escherichia coli K I ~ . In this host it is stably heritable, replicating as a DNA molecule with a molecular weight of 34-6 megadaltons. There are approximately three copies of the plasmid per chromosome. It is a member of compatibility group P. In E. coli, R906 confers resistance to ampicillin, streptom...
متن کاملProperties of R factors from Bordetella bronchiseptica.
Genetic properties and host ranges of R factors derived from Bordetella bronchiseptica of pig origin were examined. All of 61 R factors tested could confer resistance to streptomycin, sulfonamide, and aminobenzyl penicillin on their host bacteria. All of them were identified as fi(-) (no fertility inhibition) type and were found to exhibit no restriction of phages lambda, phi80, P1, P2, T1, T3,...
متن کاملBiochemical properties of a penicillin beta-lactamase mediated by R factor from Bordetella bronchiseptica.
The beta-lactamase specified by an R(te16) plasmid in Bordetella bronchiseptica was purified 200-fold by carboxymethyl-Sephadex column chromatography and electrofocusing. The enzyme has a molecular weight of 46,000 +/- 3,000 and an isoelectric point of 8.3 and was highly active against phenethicillin, oxacillin, and propicillin. The enzyme activity was inhibited by sodium chloride but not by fe...
متن کاملBordetella bronchiseptica bronchitis.
The clinical course of a patient with bronchitis caused by Bordetella bronchiseptica is described. The organism was recovered on one occasion from a protected catheter brush specimen obtained at bronchoscopy and on two occasions from expectorated sputum specimens. The infection was eradicated with antimicrobial therapy.
متن کاملAntimicrobial susceptibility of Bordetella avium and Bordetella bronchiseptica isolates.
Two veterinary pathogens, Bordetella bronchiseptica and Bordetella avium, were tested for their antimicrobial susceptibilities. Of the 20 antimicrobial agents tested, both species were consistently resistant to penicillin and cefuroxime but susceptible to mezlocillin, piperacillin, gentamicin, amikacin, and cefoperazone.
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1974
ISSN: 0022-1287
DOI: 10.1099/00221287-84-1-199