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Plasmid pGP1 carrying a penP-lacZ fusion was used to study structural plasmid instability in Bacillus subtilis. In only one of 28 sequenced deletion junction points in the penP-lacZ region short… (More)
Plasmid pGP1, containing a fusion between the penicillinase gene of Bacillus licheniformis and the beta-galactosidase gene of Escherichia coli, was constructed. This plasmid enabled a study of… (More)
Plasmid deletion formation was compared in wild-type, recE4, and addB72 strains of Bacillus subtilis. Deletion frequencies in plasmid pGP1, as monitored with a penP-lacZ fusion, were low in recE4 and… (More)