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PMID:20844556

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Citation

Salje, J, Gayathri, P and Löwe, J (2010) The ParMRC system: molecular mechanisms of plasmid segregation by actin-like filaments. Nat. Rev. Microbiol. 8:683-92

Abstract

The ParMRC plasmid partitioning apparatus is one of the best characterized systems for bacterial DNA segregation. Bundles of actin-like filaments are used to push plasmids to opposite poles of the cell, whereupon they are stably inherited on cell division. This plasmid-encoded system comprises just three components: an actin-like protein, ParM, a DNA-binding adaptor protein, ParR, and a centromere-like region, parC. The properties and interactions of these components have been finely tuned to enable ParM filaments to search the cell space for plasmids and then move ParR-parC-bound DNA molecules apart. In this Review, we look at some of the most exciting questions in the field concerning the exact molecular mechanisms by which the components of this self-contained system modulate one another's activity to achieve bipolar DNA segregation.

Links

PubMed Online version:10.1038/nrmicro2425

Keywords

Actins/chemistry; Actins/metabolism; Bacteria/genetics; Bacteria/metabolism; DNA, Bacterial/metabolism; Escherichia coli Proteins/chemistry; Escherichia coli Proteins/metabolism; Models, Molecular; Plasmids/genetics; Protein Binding

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

Notes

See also

References

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