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  • Title: [High frequency conjugative mobilization in natural strains of Bacillus subtilis, bearing a large plasmid].
    Author: Lotareva OV, Nezametdinova VZ, Fedorina EA, Poluéktova EU, Titok MA, Prozorov AA.
    Journal: Genetika; 2001 Dec; 37(12):1598-603. PubMed ID: 11785285.
    Abstract:
    Conjugative properties of the strain Bacillus subtilis that carrying a large plasmid approximately 95 kb in size and isolated in Belarus from forest soil were described. The staphylococcal plasmid pUB110 that had previously been introduced into this strain was transferred to recipient cells of the Bacillus subtilis 168 strain with a frequency of approximately 10(-2). The transfer occurred with approximately the same frequency both upon donor and recipient cell contact on the surface of membranes and in a liquid medium. The latter fact makes this system suitable as a model for studying conjugal mobilization in bacilli. A large plasmid cannot be transferred to recipients. An optimal temperature for conjugation of donor and recipient cells was 37 degrees C, but conjugation also proceeded at lower temperatures, up to 21 degrees C.
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