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"
Transregio TRR 174 Seminar
- 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: email@example.com
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.