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PIP2依存性ArfGAPタンパク質による形質膜制御機構の解明

Research Project

Project/Area Number 17048032
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionOsaka University

Principal Investigator

廣瀬 まゆみ  大阪大学, 蛋白質研究所, 特任研究員 (00353524)

Co-Investigator(Kenkyū-buntansha) 中川 敦史  大阪大学, 蛋白質研究所, 教授 (20188890)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥6,300,000 (Direct Cost: ¥6,300,000)
Fiscal Year 2006: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2005: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsAMAP1 / Cortactin / SH3ドメイン / 癌転移 / X線結晶構造解析 / NMR / 創薬 / Paxillin
Research Abstract

本研究では、AMAP-1-Paxillin-Cortactinの複合体の三次元立体構造を解明することにより、リサイクリング機能と細胞膜および細胞骨格制御機能を明らかにし、さらにAMAP-1-Paxillin-Cortactinを標的とした癌細胞浸潤・転移抑制剤の開発のための基礎研究を行うことを目的とした。我々はすでに、乳癌転移を抑制する低分子化合物(UCS15A)を見いだしていた。UCS15A(Streptomyces sp.産生物質)はAMAP1とCortactinの相互作用を抑制することにより、乳癌細胞の形質膜伸展を抑制し、乳癌細胞の浸潤・転移を阻害する。また、我々は昨年度AMAP1のプロリンリッチ領域(KRPPPPPPG)とCortactin-SH3ドメインの複合体の構造を明らかにした。その構造は、AMAP1のプロリンリッチ領域を挟み込む形で二つのCortactin-SH3ドメインが結合した極めてユニークな複合体を形成していることが明らかにした。しかし、AMAP-1-Cortactin複合体とUCS15Aとの相互作用について、詳細な解析はなされていなかった。
本年度は、女性の癌の羅漢率上位である乳癌の浸潤・転移抑制剤の開発の基礎研究を行うため、UCS15Aとプロリンリッチペプチドの相互作用について構造学的に明らかにすることを試みた。すなわち、UCS15Aおよび数種類のUCS15A類縁化合物(2b,2cなど)とプロリンリッチペプチドとの相互作用について、NMRおよび生化学実験により解析を行った。その結果、UCS15Aは極めて低濃度でAMAP1のプロリンリッチ領域およびプロリンのみから成るポリペプチドに直接結合することが分かった。さらに、UCS15Aのエポキシ基を含む6員環部位およびアルデヒド基がAMAP1のプロリンリッチ領域との相互作用に寄与している可能性が示唆された。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (19 results)

All 2007 2006 2005

All Journal Article (17 results) Book (2 results)

  • [Journal Article] Elevation of rat plasma P-selectin in acute lung injury.2007

    • Author(s)
      Mayumi Hirose
    • Journal Title

      Biochimica et Biophysica Acta (BBA)-Molecular Basis of Disease 1772・3

      Pages: 382-389

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Crystallization and preliminary X-ray analysis of rat SHPS-1.2006

    • Author(s)
      Aki Nagata
    • Journal Title

      Acta Crystallographica sect. F 62

      Pages: 189-191

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Targeting AMAP1 and cortactin binding bearing an atypical SH3/proline interface for prevention of breast cancer invasion and metastasis.2006

    • Author(s)
      Shigeru Hashimoto
    • Journal Title

      Proceedings of the National Academy of Science USA 103

      Pages: 7036-7041

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Orexin-A is composed of a highly conserved C-terminal and a specific, hydrophilic N-terminal region, revealing the structural basis of specific recognition by the orexin-I receptor.2006

    • Author(s)
      Tomoyo Takai
    • Journal Title

      Journal of Peptide Science 12・7

      Pages: 443-454

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Conformation of Amyloid Fibrils of beta_2-Microglobulin Probed by Tryptophan Mutagenesis.2006

    • Author(s)
      Miho Kihara
    • Journal Title

      Journal of Peptide Science 281・41

      Pages: 31061-31069

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Crystal structure of DsbB-DsbA complex reveals a mechanism of disulfide bond generation.2006

    • Author(s)
      Kenji Inaba
    • Journal Title

      Cell 127

      Pages: 789-801

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Crystallization and preliminary X-ray analysis of rat SHPS-12006

    • Author(s)
      Aki Nagata
    • Journal Title

      Acta Crystallographica sect. F 62

      Pages: 189-191

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ab initio crystal structure determination of spherical viruses that exhibit a centrosymmetric location in the unit cell2005

    • Author(s)
      Junichiro Taka
    • Journal Title

      Acta Crystallographica sect. D 61

      Pages: 1099-1106

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Expression and molecular characterization of spherical particles derived from the genome of the hyperthermophilic euryarchaeote, Pyrococcus furiosus2005

    • Author(s)
      Kazunori Namba
    • Journal Title

      Journal of Biochemistry 138

      Pages: 193-199

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystallization and preliminary X-ray diffraction analysis of a chitin-binding domain of hyperthermophilic chitinase from Pyrococcus furiosus2005

    • Author(s)
      Tsutomu Nakamura
    • Journal Title

      Acta Crystallographica sect. F 61

      Pages: 476-478

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystallization and preliminary X-ray analysis of hyperthermophilic L-threonine dehydrogenase from the archaeon Pyrococcus furiosus2005

    • Author(s)
      Noriko Higashi
    • Journal Title

      Acta Crystallographica sect. F 61

      Pages: 432-434

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystal Structure of Lipoate-Protein Ligase A from Escherichia coli : Determination of the Lipoic Acid-Binding Site2005

    • Author(s)
      Kazuko Fujiwara
    • Journal Title

      Journal of Biological Chemistry 280

      Pages: 33645-33651

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystal Structure of Human T-protein of Glycine Cleavage System at 2.0Å Resolution and its Implication for Understanding Non-ketotic Hyperglycinemia2005

    • Author(s)
      Kazuko Okamura-Ikeda
    • Journal Title

      Journal of Molecular Biology 35

      Pages: 1146-41159

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Using cryoloops for X-ray data collection from protein crystals at room temperature : A simple applicable method2005

    • Author(s)
      Shu Jie Li
    • Journal Title

      Journal of Crystal Growth 251

      Pages: 592-595

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A solubility and B-factor minimum of hen egg-white lysozyme crystals at 0.5 M concentration NiCl22005

    • Author(s)
      Shu Jie Li
    • Journal Title

      Journal of Crystal Growth 276

      Pages: 222-229

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The crystal structures of semi-synthetic aequorins2005

    • Author(s)
      Sachiko Toma
    • Journal Title

      Protein Science 14

      Pages: 409-416

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Preliminary crystallographic analysis of the antibiotic discharge outer membrane lipoprotein OprM of Pseudomonas aeruginosa with an exceptionally long unit cell and complex lattice structure2005

    • Author(s)
      Hiroyuki Akama
    • Journal Title

      Acta Crystallographica Section F 61

      Pages: 131-133

    • Related Report
      2005 Annual Research Report
  • [Book] タンパク質のかたちから生命の謎を解く 生物マシーナリー構造生物学の最前線2005

    • Author(s)
      中川敦史
    • Total Pages
      232
    • Publisher
      クバプロ
    • Related Report
      2005 Annual Research Report
  • [Book] 生命秩序を担う生体超分子2005

    • Author(s)
      大村敏博
    • Total Pages
      1404
    • Publisher
      共立出版
    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2018-03-28  

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