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Construction of Hfr-like donors of the obligate methanol-oxidizing bacterium Methylobacillus flagellatum KT. 1989

I G Serebrijski, and S M Kazakova, and Y D Tsygankov
Institute of Genetics and Selection of Industrial Microorganisms, Moscow, U.S.S.R.

The transposon-loaded plasmid pAS8-121, incapable of autonomous replication in Gram-negative bacteria of non-enteric group, was transferred to Methylobacillus flagellatum KT wild type strain MFK1. The transconjugants arose at a frequency of 10(-7) per donor cell. The majority of the transconjugants tested exhibited the transfer of all selected chromosomal markers at rather high (10(-4)-10(-6) per donor cell) but similar frequencies. Only one of the obtained donors, designated MFK 64, was capable of mobilizing M. flagellatum KT chromosome in a polarized manner. The integrated nature of the plasmid in this and other MFK1 (pAS8-121) derivatives was supported by the results of DNA-DNA hybridization.

UI MeSH Term Description Entries
D008772 Methylococcaceae A family of gram-negative, aerobic bacteria utilizing only one-carbon organic compounds and isolated from in soil and water. Methane-Oxidizing Bacteria,Methanomonadaceae,Methylomonadaceae,Methane Oxidizing Bacteria,Methylmonadaceae
D003227 Conjugation, Genetic A parasexual process in BACTERIA; ALGAE; FUNGI; and ciliate EUKARYOTA for achieving exchange of chromosome material during fusion of two cells. In bacteria, this is a uni-directional transfer of genetic material; in protozoa it is a bi-directional exchange. In algae and fungi, it is a form of sexual reproduction, with the union of male and female gametes. Bacterial Conjugation,Conjugation, Bacterial,Genetic Conjugation
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli

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