An asymmetric sheath controls flagellar supercoiling and motility in the leptospira spirochete.Gibson, K.H., Trajtenberg, F., Wunder, E.A., Brady, M.R., San Martin, F., Mechaly, A., Shang, Z., Liu, J., Picardeau, M., Ko, A., Buschiazzo, A., Sindelar, C.V.
(2020) Elife 9: --
- PubMed: 32157997
- DOI: 10.7554/eLife.53672
- PubMed Abstract:
- FcpB Is a Surface Filament Protein of the Endoflagellum Required for the Motility of the Spirochete
Wunder, E.A.,Slamti, L.,Suwondo, D.N.,Gibson, K.H.,Shang, Z.,Sindelar, C.V.,Trajtenberg, F.,Buschiazzo, A.,Ko, A.I.,Picardeau, M.
(2018) Front Cell Infect Microbiol 8: 130
- A novel flagellar sheath protein, FcpA, determines filament coiling, translational motility and virulence for the Leptospira spirochete.
Wunder, E.A.,Figueira, C.P.,Benaroudj, N.,Hu, B.,Tong, B.A.,Trajtenberg, F.,Liu, J.,Reis, M.G.,Charon, N.W.,Buschiazzo, A.,Picardeau, M.,Ko, A.I.
(2016) Mol. Microbiol. 101: 457
- Crystallization of FcpA from Leptospira, a novel flagellar protein that is essential for pathogenesis.
San Martin, F.,Mechaly, A.E.,Larrieux, N.,Wunder, E.A.,Ko, A.I.,Picardeau, M.,Trajtenberg, F.,Buschiazzo, A.
(2017) Acta Crystallogr F Struct Biol Commun 73: 123
Spirochete bacteria, including important pathogens, exhibit a distinctive means of swimming via undulations of the entire cell. Motility is powered by the rotation of supercoiled 'endoflagella' that wrap around the cell body, confined within the peri ...
Spirochete bacteria, including important pathogens, exhibit a distinctive means of swimming via undulations of the entire cell. Motility is powered by the rotation of supercoiled 'endoflagella' that wrap around the cell body, confined within the periplasmic space. To investigate the structural basis of flagellar supercoiling, which is critical for motility, we determined the structure of native flagellar filaments from the spirochete Leptospira by integrating high-resolution cryo-electron tomography and X-ray crystallography. We show that these filaments are coated by a highly asymmetric, multi-component sheath layer, contrasting with flagellin-only homopolymers previously observed in exoflagellated bacteria. Distinct sheath proteins localize to the filament inner and outer curvatures to define the supercoiling geometry, explaining a key functional attribute of this spirochete flagellum.
Laboratory of Molecular and Structural Microbiology, Institut Pasteur de Montevideo, Montevideo, Uruguay.,Departament of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, United States.,Biology of Spirochetes Unit, Institut Pasteur, Paris, France.,Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Brazilian Ministry of Health, Salvador, Brazil.,Department of Microbial Pathogenesis, School of Medicine, Yale University, New Haven, United States.,Department of Molecular Biophysics and Biochemistry, Yale School of Medicine, New Haven, United States.,Integrative Microbiology of Zoonotic Agents, Department of Microbiology, Institut Pasteur, Paris, France.