Transregio TRR 174 Seminar

The seminar will start later (on 15:00 h) due to a snow storm in Munich "Architecture and biogenesis of an antibacterial speargun: the type VI secretion system"

  • Date: Jan 22, 2018
  • Time: 15:00
  • Speaker: Dr. Eric Cascales
  • CNRS, Laboratory of Engineering of Macromolecular Systems, Marseille, France
  • Location: MPI for Terrestrial Microbiology
  • Room: Lecture hall
  • Host: TRR 174
  • Contact: thanbichler@uni-marburg.de

The type VI secretion system (T6SS) delivers protein effectors to diverse cell types including prokaryotic and eukaryotic cells, therefore participating in inter-bacterial competition and pathogenesis. The T6SS is constituted of an envelope-spanning complex anchoring a cytoplasmic tubular edifice. This tubular structure is evolutionarily, functionally and structurally related to the tail of contractile phages. It is composed of an inner tube tipped by a spike complex, and engulfed within a sheath-like structure. This structure assembles onto a platform called "baseplate" that is connected to the membrane sub-complex. The T6SS functions as a nano-speargun: upon contraction of the sheath, the inner tube is propelled towards the target cell, allowing effector delivery. During this presentation, I will present our recent results regarding the architecture, biogenesis and function of this fascinating secretion machine.

 
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