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J Bacteriol. 1985 June; 162(3): 1238-1243

Plasmid transduction by Bacillus subtilis bacteriophage SPP1: effects of DNA homology between plasmid and bacteriophage.

ABSTRACT

Any SPP1 DNA restriction fragment cloned into Bacillus subtilis plasmid pC194 or pUB110 increased the transduction frequency of the plasmid by SPP1 100- to 1,000-fold over the transduction level of the plasmid alone. This increment was observed irrespective of whether a fragment contained the SPP1 packaging origin (pac). Furthermore, an SPP1 derivative into whose genome pC194 DNA had been integrated transduced pC194 DNA with a greatly enhanced frequency. Transduction enhancement mediated by DNA-DNA homology between plasmid and SPP1 was independent of the extent of homology (size range analyzed, 0.5 to 3.9 kilobases) and the recombination proficiency of donor or recipient.

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