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  • Title: [Pseudomonas mallei and Pseudomonas pseudomallei: introduction and maintenance of natural and recombinant plasmid replicons].
    Author: Abaev IV, Astashkin EI, Pachkunov DM, Stagis NI, Shitov VT, Svetoch EA.
    Journal: Mol Gen Mikrobiol Virusol; 1995; (1):28-36. PubMed ID: 7541512.
    Abstract:
    Comparative analysis of recipient activity of Pseudomonas mallei, Pseudomonas pseudomallei, and Pseudomonas cepacia strains towards naturally occurring and recombinant plasmid replicons was carried out. Autonomic broad host range vector plasmids based on RSF1010(IncQ) and pSa(IncW) replicons as well as integrative vectors based on pSUP202(Co1E1) replicon have been constructed. The study has shown that naturally occurring plasmids RSF1010(IncQ), pSa(IncW), R15(IncN), and RP4(IncP) are being efficiently transferred and stably maintained in investigated Pseudomonas strains. However, recombinant plasmids with the mini-replicon pSa which are stable in Escherichia coli have shown segregative instability in Pseudomonas strains, whereas derivatives of plasmid RSF1010 demonstrated different stability depending on the type of insertion. Plasmid pSUP202 derivative integrative vector pSM525 is efficiently introduced and stably maintained in P. mallei C-5 strain. Two vector systems for genetic manipulations in P.mallei and P.pseudomallei cells have been developed.
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