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  • Title: RepFIB: a basic replicon of large plasmids.
    Author: Gibbs MD, Spiers AJ, Bergquist PL.
    Journal: Plasmid; 1993 May; 29(3):165-79. PubMed ID: 8356112.
    Abstract:
    The distribution of the RepFIB replicon among a total of 20 plasmid incompatibility groups was determined using Southern blot and polymerase chain reaction analysis. The presence of the replicon was confirmed in 25 of 55 plasmids tested. The majority of plasmids carrying RepFIB are from the IncF incompatibility groups, but one plasmid from IncI and one plasmid from IncP also possess the replicon. Seven different examples of RepFIB were sequenced in the minimal replicon region to obtain 1525 bp of sequence information covering the repA gene and flanking repeat regions for comparison. An analysis of these sequences plus three sequences previously reported showed almost perfect conservation of the predicted protein sequence of RepA and of the flanking DNA repeats. DNA sequence data were analyzed using maximum parsimony techniques to describe the possible evolutionary relationships of the 10 examples of RepFIB.
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