The active partition gene incC of IncP plasmids is required for stable maintenance in a broad range of hosts
Journal of Bacteriology, ISSN: 0021-9193, Vol: 184, Issue: 6, Page: 1788-1793
2002
- 25Citations
- 27Captures
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Metrics Details
- Citations25
- Citation Indexes25
- CrossRef25
- 24
- Captures27
- Readers27
- 27
Article Description
Plasmids of incompatibility group P (IncP) are capable of replication and stable inheritance in a wide variety of gram-negative bacteria. Three determinants of IncP plasmids are components of an active partition locus that is predicted to function in the segregation of plasmid copies to daughter cells. These determinants are incC, which codes for a member of the ParA family of partition ATPases; korB, which specifies a DNA-binding protein that also functions as a global transcriptional repressor; and O, the DNA target for KorB, which occurs at multiple locations on IncP plasmids. To determine the importance and host range of the IncC/KorB partition system in the maintenance of IncP plasmids, we constructed an in-frame deletion of incC in the otherwise intact 60-kb IncPα plasmid R995. R995ΔincC was found to be highly unstable in Escherichia coli, Pseudomonas aeruginosa, Pseudomonas putida, Agrobacterium tumefaciens, and Acinetobacter calcoaceticus, whereas wild-type R995 is stable in all these hosts. In addition, R995ΔincC could not be established in Actinobacillus actinomycetemcomitans. trans-Complementation analysis showed that the coding region for IncC2 polypeptide, which is expressed from an internal translational start within the incC gene, was sufficient to restore stable maintenance to wild-type levels. The results show that the IncC/KorB active partition system of IncP plasmids is remarkably proficient for stable maintenance in diverse bacteria.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0036190997&origin=inward; http://dx.doi.org/10.1128/jb.184.6.1788-1793.2002; http://www.ncbi.nlm.nih.gov/pubmed/11872733; https://journals.asm.org/doi/10.1128/JB.184.6.1788-1793.2002; http://jb.asm.org/cgi/doi/10.1128/JB.184.6.1788-1793.2002; https://syndication.highwire.org/content/doi/10.1128/JB.184.6.1788-1793.2002; https://dx.doi.org/10.1128/jb.184.6.1788-1793.2002; https://jb.asm.org/content/184/6/1788
American Society for Microbiology
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