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pSK41 is a prototypical 46-kb conjugative multiresistance plasmid of Staphylococcus aureus. The pSK41 replication initiation protein (Rep) is rate-limiting for plasmid replication, and its expression is negatively regulated by a small, non-coding antisense transcript, RNAI, that is complementary to the rep mRNA leader region. In this study, enzymatic probing was used to verify the predicted secondary...
The widespread replicons of repABC and repC families from α-proteobacteria share high similarity in their replication initiator proteins (RepC). Here we describe the minimal region required for stable replication of a member of the repC family, the low copy-number plasmid pRmeGR4a from Sinorizobium meliloti GR4. This region contains only two genes: one encoding the initiator protein RepC (46.8kDa)...
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