A bacterial strain was isolated from soil and identified as Acinetobacter calcoaceticus var. lwoffii. The strain can utilize a wide spectrum of aromatic compounds. It carries a transmissive plasmid pBSW13 which determines resorcin utilization via the ortho pathway including the following steps: resorcin-hydroxyhydroquinone-maleylacetate-beta-ketoadipi c acid. The plasmid has been transferred by conjugation into the recipient strains of A. calcoaceticus 5734 CCM rifr, Escherichia coli J-53 met-pro-rifr and Klebsiella sp. Plasmid DNA with a molecular mass close to that of phage gamma was detected by electrophoresis in the donor and recombinant strains. The degradation of other substrates is not a phenotypic expression of the genes of this plasmid.
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