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新規パルミトイル化酵素群の活性制御機構の解明

Research Project

Project/Area Number 18687008
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Functional biochemistry
Research InstitutionNational Institute for Physiological Sciences (2007-2008)
National Institute for Longevity Sciences,NCGG (2006)

Principal Investigator

深田 正紀  National Institute for Physiological Sciences, 細胞器官研究系, 教授 (00335027)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥30,030,000 (Direct Cost: ¥23,100,000、Indirect Cost: ¥6,930,000)
Fiscal Year 2008: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2007: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2006: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Keywords脂質修飾 / パルミトイル化 / 酵素 / シナプス / 細胞内情報伝達 / 蛋白質膜輸送 / 質量分析 / グルタミン酸受容体 / 蛋白質輸送 / 生化学
Research Abstract

パルミトイル化は他の脂質修飾とは異なり可逆的であり、外界刺激依存性にサイクリングしている。これまでに、我々は全23種類からなる新規パルミトイル化酵素群をゲノムワイドに単離し、その機能解析を進めてきた。今年度はパルミトイル化酵素ファミリーの活性制御機構を明らかにするために、DHHCパルミトイル化酵素に結合する蛋白質を脳組織から特異性高く精製し、高感度質量分析装置を駆使してその構成蛋白質を明らかにした。具体的にはDHHC2結合蛋白質としてDHHC20を含む複数の蛋白質を見出した。また、DHHC3結合蛋白質としてintegrinなど複数の膜蛋白質を同定した。さらに、DHHC8,DHHC21に結合する蛋白質を同様の手法を用いて次々に同定しつつある。これらの解析を通じて、パルミトイル化酵素群のサブファミリー特異的な活性制御機構の一端を明らかにした。
一方、我々は前年度までに神経活動の下流でPSD-95パルミトイル化酵素DHHC2の活性がダイナミックに変化することを見出している。今年度はDendra2融合蛋白質を用いたphotoconversion法を駆使して、PSD-95やDHHC2酵素の動態を神経細胞で可視化し、これら蛋白質の動態制御機構を検討した。興味深いことに、神経活動を遮断することによりPSD-95はより膜近傍に集積し、AMPA受容体の恒常性維持に重要な役割を果たしていることを明らかにした。本研究課題は平成20年度科学研究費補助金(若手研究(S))に係る交付内定通知の受理(5月)に伴い、若手研究(S)に専念するため廃止した。

Report

(3 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (27 results)

All 2008 2007 2006 Other

All Journal Article (12 results) (of which Peer Reviewed: 5 results) Presentation (10 results) Book (3 results) Remarks (2 results)

  • [Journal Article] Discovery of protein-palmitoylating enzymes2008

    • Author(s)
      Tsutsumi, R., et.al.
    • Journal Title

      Pflugers Arch-Eur. J. Physiol. (in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Discovery of protein-palmitoylating enzymes.2008

    • Author(s)
      Tsutsumi, R., et. al.,
    • Journal Title

      Pflugers Arch-Eur. J. Physiol. (in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] GM1-ganglioside-induced Aβ assembly at synaptic sites of cultured neurons.2007

    • Author(s)
      Yamamoto, N., et. al.,
    • Journal Title

      Biochim Biophys Acta 1768

      Pages: 1128-1137

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural basis for tubulin recognition by cytoplasmic linker protein 170 and its autoinhibition.2007

    • Author(s)
      Mishima, M., et. al.,
    • Journal Title

      Proc Natl Acad Sci U S A. 104

      Pages: 10346-10351

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Renal defects associated with improper polarization of the CRB and DLG polarity complexes in MALS-3 knockout mice.2007

    • Author(s)
      Olsen, O., et. al.,
    • Journal Title

      J. Cell Biol. 179

      Pages: 151-164

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IQGAP3, a novel effector of Rac1 and Cdc42, regulates neurite outgrowth.2007

    • Author(s)
      Wang, S. et al.
    • Journal Title

      J. Cell Sci. 120

      Pages: 567-577

    • Related Report
      2006 Annual Research Report
  • [Journal Article] GM1-ganglioside-induced Aβ assembly at synaptic sites of cultured neurons.2007

    • Author(s)
      Yamamoto, N. et al.
    • Journal Title

      Biochim. Biophys. Acta. (In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Epilepsy-related ligand/receptor complex LGI1 and ADAM22 regulates synaptic transmission.2006

    • Author(s)
      Fukata Y., et al.
    • Journal Title

      Science 313

      Pages: 1792-1795

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Impaired activation and localization of LAT in anergic T cells as a consequence of a selective palmitoylation defect.2006

    • Author(s)
      Hundt, M., et al.
    • Journal Title

      Immunity 24

      Pages: 513-522

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Identification of Golgi-localized acyl transferases that palmitoylate and regulate endothelial nitric oxide synthase.2006

    • Author(s)
      Fernandez-Hernando, C., et al.
    • Journal Title

      J. Cell Biol. 174

      Pages: 369-377

    • Related Report
      2006 Annual Research Report
  • [Journal Article] GODZ-mediated palmitoylation of GABA-A receptors is required for normal assembly and function of GABAergic inhibitory synapses.2006

    • Author(s)
      Fang, C. et al.
    • Journal Title

      J. Neurosci. 26

      Pages: 12758-12768

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Systematic screening for palmitoyl transferase activity of the DHHC protein family in mammalian cells.2006

    • Author(s)
      Fukata, Y. et al.
    • Journal Title

      Methods 40

      Pages: 177-182

    • Related Report
      2006 Annual Research Report
  • [Presentation] Novel regulators of AMPA receptor functions.2008

    • Author(s)
      深田正紀
    • Organizer
      第36回生理研国際シンポジウム
    • Place of Presentation
      岡崎
    • Year and Date
      2008-03-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] Identification of the epilepsy-related LGI1 multiprotein complex2008

    • Author(s)
      深田優子, ら
    • Organizer
      第38回生理研国際シンポジウス
    • Place of Presentation
      岡崎
    • Year and Date
      2008-03-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] Activity-dependent regulation of PSD-95 palmitoylation enzymes2008

    • Author(s)
      則竹淳, ら
    • Organizer
      第38回生理研国際シンポジウム
    • Place of Presentation
      岡崎
    • Year and Date
      2008-03-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] ynaptic activity regulates PSD-95 palmitoylating enzymes.2008

    • Author(s)
      深田正紀
    • Organizer
      US-Japan Brain Research Collaborative Program
    • Place of Presentation
      Pacific Grove, USA
    • Year and Date
      2008-02-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] PSD-95パルミトイル化酵素の活性制御機構の解明2007

    • Author(s)
      深田正紀, ら
    • Organizer
      第30回日本分子生物学会、第80回日本生化学会大会合同大会BMB2007
    • Place of Presentation
      横浜
    • Year and Date
      2007-12-15
    • Related Report
      2007 Annual Research Report
  • [Presentation] 新規リガンドLGIファミリーの神経系における機能2007

    • Author(s)
      深田優子, ら
    • Organizer
      第30回日本分子生物学会、第80回日本生化学会大会合同大会BMB2007
    • Place of Presentation
      横浜
    • Year and Date
      2007-12-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Regulation of Gα palmitoylation by DHHC family proteins2007

    • Author(s)
      堤良平, ら
    • Organizer
      The 47th Annual Meeting of American Society for Cell Biology
    • Place of Presentation
      Washington DC, USA
    • Year and Date
      2007-12-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Regulatory Mechnism of PSD-95 Palmitoylation through P-PAT2007

    • Author(s)
      則竹淳, ら
    • Organizer
      The Annual Meeting of Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2007-11-05
    • Related Report
      2007 Annual Research Report
  • [Presentation] PSD-95パルミトイル化酵素によるAMPA受容体の動態制御機構2007

    • Author(s)
      深田正紀, ら
    • Organizer
      第54回中部日本生理学会、第100回近畿生理学談話会 合同大会
    • Place of Presentation
      津
    • Year and Date
      2007-10-19
    • Related Report
      2007 Annual Research Report
  • [Presentation] 新規リガンド・受容体LGI1/ADAM22によるシナプス機能制御2007

    • Author(s)
      深田優子, ら
    • Organizer
      生理学研究所研究会「シナプス可塑性の分子的基盤」
    • Place of Presentation
      岡崎
    • Year and Date
      2007-06-21
    • Related Report
      2007 Annual Research Report
  • [Book] 「神経の分化、回路形成、機能発現」PSD-95パルミトイル化脂修飾酵素によるAMPA受容体動熊制御メカニズム2008

    • Author(s)
      則竹淳, ら
    • Publisher
      蛋白質核酸酵素
    • Related Report
      2007 Annual Research Report
  • [Book] てんかん関連蛋白質LGI1はシナプス伝達を制御する2007

    • Author(s)
      深田優子, ら
    • Publisher
      蛋白質核酸酵素
    • Related Report
      2007 Annual Research Report
  • [Book] The Dynamic Synapse : Molecular Methods in lonotropic Receptor Biology. Protein palmitoylation by DHHC protein family.2006

    • Author(s)
      Fukata, Y. et al.
    • Publisher
      The CRC Press
    • Related Report
      2006 Annual Research Report
  • [Remarks]

    • URL

      http://www.nips.ac.jp/fukata/

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.nips.ac.jp/fukata/

    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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