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Elucidation of a novel process in neurotransmitter release

Research Project

Project/Area Number 22500334
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neurochemistry/Neuropharmacology
Research InstitutionKobe University

Principal Investigator

SAKISAKA Toshiaki  神戸大学, 大学院・医学研究科, 教授 (80359843)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords神経伝達物質の放出機構 / SNARE複合体 / トモシン / 小胞融合 / SNARE
Research Abstract

The main process in synaptic transmission is neurotransmitter release. It is important to elucidate the processes of neurotransmitter release for understanding synaptic plasticity and memory formation. So far, we have revealed that a SNARE regulator protein named tomosyn negatively regulates neurotransmitter release. In this study, we showed that tomosyn directly binds to Ca^<2+> sensor protein named synaptotagmin-1 in a Ca^<2+>-dependent manner. Tomosyn negatively regulates synaptotagmin-1-mediated step of Ca^<2+>-dependent neurotransmitter release. Tomosyn-synaptotagmin1 complex forms a novel process named closing and regulates continuous neurotransmitter release.

Report

(3 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • Research Products

    (13 results)

All 2011 2010 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (4 results) Remarks (3 results)

  • [Journal Article] Dual regulation of RA-RhoGAP activity by phosphatidic acid and Rap1 during neurite outgrowth2011

    • Author(s)
      Kurooka, T., Yamamoto, Y., Takai, Y., and Sakisaka, T.
    • Journal Title

      J. Biol. Chem

      Volume: 286巻 Pages: 6832-6848

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dual regulation of RA-RhoGAP activity by phosphatidic acid and Rapl during neurite outgrowth2011

    • Author(s)
      Takao Kurooka
    • Journal Title

      The Journal of Biological Chemistry

      Volume: 286巻 Pages: 6832-6843

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tomosyn inhibits synaptotagmin-1-mediated step of Ca^<2+>-dependent neurotransmitter release through its N-terminal WD40 repeats2010

    • Author(s)
      Yamamoto, Y., Mochida, S., Miyazaki, N., Kawai, K., Fujikura, K., Kurooka, T., Iwasaki, K., and Sakisaka, T.
    • Journal Title

      J. Biol. Chem

      Volume: 285巻 Pages: 40943-40955

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] The tail domain of tomosyn controls membrane fusion through tomosyn displacement by VAMP22010

    • Author(s)
      Yamamoto, Y., Fujikura, K., Sakaue, M., Okimura, K., Kobayashi, Y., Nakamura, T., and Sakisaka, T.
    • Journal Title

      Biochem. Biophys. Res. Commun

      Volume: 399巻 Pages: 24-30

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Tomosyn inhibits synaptotagmin-1-mediated step of Ca^<2+>-dependent neurotransmitter release through its N-terminal WD40 repeats2010

    • Author(s)
      Yasunori Yamamoto
    • Journal Title

      The Journal of Biological Chemistry

      Volume: 285巻 Pages: 40943-40955

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The tail domain of tomosyn controls membrane fusion through tomosyn displacement by VAMP22010

    • Author(s)
      Yasunori Yamamoto
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 339巻 Pages: 24-30

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] 小胞体局在タンパク質p38による尾部アンカー型膜タンパク質の生合成調節機構2011

    • Author(s)
      山本泰憲、匂坂敏朗
    • Organizer
      第84回日本生化学会大会
    • Place of Presentation
      京都国際会館
    • Year and Date
      2011-09-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 小胞体局在タンパク質p38による尾部アンカー型膜タンパク質の生合成調節機構2011

    • Author(s)
      山木泰憲
    • Organizer
      第84回日本生化学会大会
    • Place of Presentation
      国立京都国際会館(京都府)
    • Year and Date
      2011-09-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] シナプス小胞エキソサイトーシスにおけるSNARE制御分子トモシンの役割2010

    • Author(s)
      山本泰憲、藤倉航平、阪上海央、置村健二郎、小林雄太、中村俊宏、匂坂敏朗
    • Organizer
      BMB2010第33回日本分子生物学会年会・第83回日本生化学会大会合同大会
    • Place of Presentation
      神戸国際展示場
    • Year and Date
      2010-12-07
    • Related Report
      2011 Final Research Report
  • [Presentation] シナプス小胞エキソサイトーシスにおけるSNARE制御分子トモシンの役割2010

    • Author(s)
      山本泰憲
    • Organizer
      BMB2010
    • Place of Presentation
      神戸ポートアイランド(兵庫県)
    • Year and Date
      2010-12-07
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.med.kobe-u.ac.jp/membrd/

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://www.med.kobe-u.ac.jp/membrd/

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.med.kobe-u.ac.jp/membrd/

    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2016-04-21  

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