Institut de Biologie StructuraleGrenoble / France

Contact person(s) related to this article / PELLEQUER Jean-Luc

T3SS needle represents an excellent drug target for small molecules acting as virulence blockers that could disrupt pathogenesis of a broad range of bacteria

We combined in vivo, in vitro, and in silico approaches to characterize the Pseudomonas aeruginosa T3SS needle and its major component PscF. Using a combination of mutagenesis, phenotypic analyses, immunofluorescence, proteolysis, mass spectrometry, atomic force microscopy, electron microscopy, and molecular modeling, we propose a model of the P. aeruginosa needle that exposes the N-terminal region of each PscF monomer toward the outside of the filament, while the core of the fiber is formed by the C-terminal helix.

Lombardi C, Tolchard J, Bouillot S, Signor L, Gebus C, Liebl D, Fenel D, Teulon J-M, Brock J, Habenstein B, Pellequer J-L, Faudry E, Loquet A, Attrée I, Dessen A and Job V (2019) Structural and functional characterization of the Type Three Secretion System (T3SS) needle of Pseudomonas aeruginosa. Front. Microbiol. 10 : 573.