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Proc Natl Acad Sci U S A. 1974 Sep;71(9):3410-4.

Dissociation and interaction of individual components of a degradative plasmid aggregate in Pseudomonas.


The transfer of the OCT plasmid from Pseudomonas oleovorans to Pseudomonas putida strain PpGl results in the acquisition of three independent replicons: OCT, factor K, and the MER plasmid. OCT is a nontransmissible plasmid harboring genes that code for the enzymes responsible for the degradation of n-octane. Factor K is a transfer plasmid capable of mobilizing OCT as well as chromosomal genes but incapable of enhancing transfer frequencies of other transmissible plasmids such as CAM, SAL, or RP-1. MER is a self-transmissible plasmid which can confer resistance to high concentrations of mercury salts. While OCT and MER are incompatible with CAM, factor K is compatible with it. Transmissible plasmids such as SAL, CAM, MER, or RP-1 cannot mobilize OCT to any significant extent, and exert strong repression on factor K-mediated transfer of chromosomal genes.

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