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The cryptic 95-kb plasmid p19 of the Bacillus subtilis 19 soil strain promotes the transfer of a small kanamycin resistance plasmid pUB110. To facilitate direct selection for p19 transfer, a plasmid derivative carrying the chloramphenicol resistance gene was constructed. The frequency of transfer of the large plasmid between cells of B. subtilis 19 approached 100% but was more than two orders of magnitude...
We determined the complete sequence of a cryptic 7949-bp plasmid isolated from naturally occurring Bacillus subtilis found in Russian soil from Moscow. We found 15 putative open reading frames (ORFs), all of which were preceded by a ribosome binding site. One encodes the gene (rep) which should be essential for vegetative rolling circle replication (RCR). The putative double-stranded origin as well...
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