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High-speed motility originates from cooperatively pushing and pulling flagella bundles in bilophotrichous bacteria.
Bente, Klaas; Mohammadinejad, Sarah; Charsooghi, Mohammad Avalin; Bachmann, Felix; Codutti, Agnese; Lefèvre, Christopher T; Klumpp, Stefan; Faivre, Damien.
Afiliação
  • Bente K; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
  • Mohammadinejad S; Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
  • Charsooghi MA; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Zanjan, Islamic Republic of Iran.
  • Bachmann F; Institute for the Dynamics of Complex Systems, University of Göttingen, Göttingen, Germany.
  • Codutti A; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
  • Lefèvre CT; Department of Physics, Institute for Advanced Studies in Basic Sciences, Zanjan, Islamic Republic of Iran.
  • Klumpp S; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
  • Faivre D; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
Elife ; 92020 01 28.
Article em En | MEDLINE | ID: mdl-31989923
Bacteria propel and change direction by rotating long, helical filaments, called flagella. The number of flagella, their arrangement on the cell body and their sense of rotation hypothetically determine the locomotion characteristics of a species. The movement of the most rapid microorganisms has in particular remained unexplored because of additional experimental limitations. We show that magnetotactic cocci with two flagella bundles on one pole swim faster than 500 µm·s-1 along a double helical path, making them one of the fastest natural microswimmers. We additionally reveal that the cells reorient in less than 5 ms, an order of magnitude faster than reported so far for any other bacteria. Using hydrodynamic modeling, we demonstrate that a mode where a pushing and a pulling bundle cooperate is the only possibility to enable both helical tracks and fast reorientations. The advantage of sheathed flagella bundles is the high rigidity, making high swimming speeds possible.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Alphaproteobacteria / Flagelos Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Alphaproteobacteria / Flagelos Idioma: En Ano de publicação: 2020 Tipo de documento: Article