Structure of a heteropolymeric type 4 pilus from a monoderm bacterium

Autor: Robin Anger, Laetitia Pieulle, Meriam Shahin, Odile Valette, Hugo Le Guenno, Artemis Kosta, Vladimir Pelicic, Rémi Fronzes

Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)

Abstract Type 4 pili (T4P) are important virulence factors, which belong to a superfamily of nanomachines ubiquitous in prokaryotes, called type 4 filaments (T4F). T4F are defined as helical polymers of type 4 pilins. Recent advances in cryo-electron

Externí odkaz: https://doaj.org/article/d90f3c04320e420fbf14aa209a87aebe

Dynamic proton-dependent motors power type IX secretion and gliding motility in Flavobacterium.

Autor: Maxence S Vincent, Caterina Comas Hervada, Corinne Sebban-Kreuzer, Hugo Le Guenno, Maïalène Chabalier, Artemis Kosta, Françoise Guerlesquin, Tâm Mignot, Mark J McBride, Eric Cascales, Thierry Doan

Publikováno v: PLoS Biology, Vol 20, Iss 3, p e3001443 (2022)

Motile bacteria usually rely on external apparatus like flagella for swimming or pili for twitching. By contrast, gliding bacteria do not rely on obvious surface appendages to move on solid surfaces. Flavobacterium johnsoniae and other bacteria in th

Externí odkaz: https://doaj.org/article/fef21294b1f549c1972e66c699c5fe6f

Collective magnetotaxis of microbial holobionts is optimized by the three-dimensional organization and magnetic properties of ectosymbionts

Autor: Daniel M. Chevrier, Amélie Juhin, Nicolas Menguy, Romain Bolzoni, Paul E. D. Soto-Rodriguez, Mila Kojadinovic-Sirinelli, Greig A. Paterson, Rachid Belkhou, Wyn Williams, Fériel Skouri-Panet, Artemis Kosta, Hugo Le Guenno, Eva Pereiro, Damien Faivre, Karim Benzerara, Caroline L. Monteil, Christopher T. Lefevre

Publikováno v: Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America, 2023, 120 (10), pp.e2216975120. ⟨10.1073/pnas.2216975120⟩
Chevrier, D M, Juhin, A, Menguy, N, Bolzoni, R, Soto-Rodriguez, P E D, Kojadinovic-Sirinelli, M, Paterson, G A, Belkhou, R, Williams, W, Skouri-Panet, F, Kosta, A, Le guenno, H, Pereiro, E, Faivre, D, Benzerara, K, Monteil, C L & Lefevre, C T 2023, ' Collective magnetotaxis of microbial holobionts is optimized by the three-dimensional organization and magnetic properties of ectosymbionts ', Proceedings of the National Academy of Sciences (PNAS), vol. 120, no. 10, e2216975120 . https://doi.org/10.1073/pnas.2216975120

Altres ajuts: D.M.C. and D.F. acknowledge awarded ALBA synchrotron beamtimes (Proposals 2018022677 and 2019023346), Mistral beamline staff for assistance in cryo-SXT experiments and CALIPSOplus funding for Proposal 2019023346. We acknowledge Soleil S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e563429a964c152e394446d3d5185c00
https://ddd.uab.cat/record/273038

Local pH Modulation during Electro-Enzymatic O2 Reduction: Characterization of the Influence of Ionic Strength by In Situ Fluorescence Microscopy

Autor: Hiu Mun Man, Ievgen Mazurenko, Hugo Le Guenno, Laurent Bouffier, Elisabeth Lojou, Anne de Poulpiquet

Publikováno v: Analytical Chemistry
Analytical Chemistry, 2022, 94 (45), pp.15604-15612. ⟨10.1021/acs.analchem.2c02135⟩

International audience; Understanding how environmental factors affect the bioelectrode efficiency and stability is of uttermost importance to develop high-performance bioelectrochemical devices. By coupling fluorescence confocal microscopy in situ t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93c345328f3d5eea3bda0db7801259da
https://hal.science/hal-03837132/document

In Situ Fluorescence Tomography Enables a 3D Mapping of Enzymatic O 2 Reduction at the Electrochemical Interface

Autor: Hugo Le Guenno, Hiu Mun Man, Bastien Tassy, Anne de Poulpiquet, Elisabeth Lojou, Alice L. Dauphin, Laurent Bouffier

Publikováno v: Analytical Chemistry
Analytical Chemistry, 2020, 92 (10), pp.7249-7256. ⟨10.1021/acs.analchem.0c00844⟩
Analytical Chemistry, American Chemical Society, 2020, 92 (10), pp.7249-7256. ⟨10.1021/acs.analchem.0c00844⟩

International audience; Getting information about the fate of immobilized biomolecules and the evolution of their environment during turnover is a mandatory step towards bioelectrode optimization for effective use in biodevices. We demonstrate here t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7eddbccdddd6aa380a6a5bcaffab8d02
https://hal.science/hal-02936237/document