Molecular mechanism of force generation by dynein, a molecular motor belonging to the AAA+ family

  • Naoki Numata
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Takahide Kon
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Tomohiro Shima
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Kenji Imamula
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Toshifumi Mogami
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Reiko Ohkura
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Keiko Sutoh
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan
  • Kazuo Sutoh
    Department of Life Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153-8902, Japan

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説明

<jats:p>Dynein is an AAA+ (ATPase associated with various cellular activities)-type motor complex that utilizes ATP hydrolysis to actively drive microtubule sliding. The dynein heavy chain (molecular mass &gt;500 kDa) contains six tandemly linked AAA+ modules and exhibits full motor activities. Detailed molecular dissection of this motor with unique architecture was hampered by the lack of an expression system for the recombinant heavy chain, as a result of its large size. However, the recent success of recombinant protein expression with full motor activities has provided a method for advances in structure–function studies in order to elucidate the molecular mechanism of force generation.</jats:p>

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