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. 1984;194(1-2):65-72.
doi: 10.1007/BF00383499.

Plasmid RP4 encodes two forms of a DNA primase

E Lanka, R Lurz, M Kröger, J P Fürste

Plasmid RP4 encodes two forms of a DNA primase

E Lanka et al. Mol Gen Genet. 1984.

Abstract

The pri gene locus of the conjugative broad host range plasmid RP4 maps between coordinates 40.3 and 43.5 and encodes two antigenically related forms of a DNA primase with a molecular mass of 118 and 80 kDa (kilodalton). Genesis of these two products has been examined using Pri+-recombinant plasmids. As shown by deletion analysis, the primase polypeptides are tow separate translation products which arise from an in-phase overlapping gene arrangement. It is suggested that transcription of a set of RP4 genes including the pri gene starts at a promoter site within the Tra1 region. In vivo, RP4 mutant primase can apparently substitute for Escherichia coli primase as demonstrated by measuring suppression of the dnaG3 (ts) mutant.

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References

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