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Conjugative Pili of Plasmids in Escherichia coli K-12 and Pseudomonas Species

  • David E. Bradley

Summary

There are three basic morphological forms of conjugative pili for plasmids transferable to Escherichia coli K-12: thin flexible, thick flexible, and rigid. Plasmids determining rigid pili transfer at least 2000X more efficiently on a solid surface compared with in a liquid. The majority of such plasmids are naturally derepressefor transfer and pilus synthesis. The following Pseudomonas plasmids determine rigid pili: Rmsl48 (IncP-7), TOL (IncP-9), and R91.5 (IncP-10). Several new plasmid-specific bacteriophages have been found to adsorb to the sides or tips of conjugative pili.

Keywords

Nalidixic Acid Incompatibility Group Serological Relationship Immune Electron Microscopy Rigid Pilus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1981

Authors and Affiliations

  • David E. Bradley
    • 1
  1. 1.Faculty of Medicine Memorial University of NewfoundlandSt. John’s, NewfoundlandCanada

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