Characterization of the replicon from plasmid pAC1 from Acetobacter pasteurianus.

A panel of recombinant plasmids pACK5 and pACT7 was prepared by introducing kanamycin and tetracycline resistance into the partially split plasmid pAC1 which contained replicon isolated from Acetobacter pasteurianus. The replicon in plasmid pAC1 is compatible with the ColE1 replicon. Compared to pBR322, the plasmid had more than 30 copies per chromosome in Escherichia coli cells. Plasmids were transformed into E. coli DH1, Acetobacter pasteurianus 3614, Acetobacter aceti 3620, Shigella, Citrobacter, and Brevibacterium flavum cells, and the stability of plasmid DNA was tested after cultivation in nonselective conditions.