The Mechanism of the Ion-Driven Flagellar Motor Rotation: Where Is the Rotational Force Generated?

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  • FUKUOKA Hajime
    Division of Biological Science, Graduate School of Science, Nagoya University
  • YAKUSHI Toshiharu
    Division of Biological Science, Graduate School of Science, Nagoya University
  • HOMMA Michio
    Division of Biological Science, Graduate School of Science, Nagoya University

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Other Title
  • イオン駆動型べん毛の回転機構：回転力はどこで発生しているのだろうか？
  • イオン クドウガタ ベンモウ ノ カイテン キコウ カイテンリョク ワ ドコ デ ハッセイ シテ イル ノ ダロウ カ

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Abstract

Bacterial flagellar motors are molecular machines powered by the electrochemical potential gradient of specific ions, H+ or Na+, across the membrane. The force is generated by the interaction between a stator and a rotor of the motor which is located at the base of flagellum. A mechanical model of the H+-driven motor rotation by electrostatic interactions between the stator protein, MotA, and the rotor protein, FliG, has been presented. In this review, we summarize recent studies of the Na+-driven motor and discuss the molecular mechanism of the rotation comparing with the H+-driven motor.<br>

Journal

  • Seibutsu Butsuri

    Seibutsu Butsuri 45 (1), 22-27, 2005

    The Biophysical Society of Japan General Incorporated Association

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