Interfacial Interactions of Pore-Forming Colicins

  • Helen Ridleya
  • Christopher L. Johnson
  • Jeremy H. Lakey
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 677)


Colicins are water soluble toxins secreted by E. coli cells to kill other E. coli and related species. To do this they need to cross the outer membrane, periplasm and inner membrane. Pore forming colicins, as their name suggests form a voltage dependent pore in the inner membrane. This chapter deals with the interfaces, both lipid and protein, that the colicins experience as they make the short but complex journey that brings them to the point of pore formation. The succession of molecular interactions with lipid and protein receptors causes a series of conformational changes which allow these large >40 kDa proteins to outwit the normally tight defensive shield of the target cell. This is done by combining general physico-chemical interfacial interactions, such as the use of amphipathic helical peptides, with precisely targeted protein-protein interactions involving both rigid and natively disordered protein domains.


Pore Formation Membrane Binding Yersinia Pestis Membrane Insertion Lytic Peptide 
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

© Landes Bioscience and Springer Science+Business Media 2010

Authors and Affiliations

  • Helen Ridleya
    • 1
  • Christopher L. Johnson
    • 1
  • Jeremy H. Lakey
    • 1
  1. 1.Institute for Cell and Molecular BiosciencesUniversity of Newcastle upon TyneNewcastle upon TyneUK

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