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2008 Fiscal Year Final Research Report

Studies of PRAS40, the novel substrate of mTOR that senses the nutritional environments and regulates cellular functions

Research Project

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Project/Area Number 19790213
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field General medical chemistry
Research InstitutionKobe University

Principal Investigator

OSHIRO Noriko  Kobe University, 自然科学系先端融合研究環バイオシグナル研究センター, 助教 (70372662)

Project Period (FY) 2007 – 2008
Keywords細胞内シグナル伝達 / 栄養化学 / アミノ酸 / mTOR / ラパマイシン / プロテインキナーゼ / PRAS40 / リン酸化部位特異的抗体
Research Abstract

mTORは免疫抑制剤ラパマイシンの細胞内標的として同定されたプロテインキナーゼであり、アミノ酸濃度の上昇により活性化され翻訳調節因子である4E-BP1およびS6Kのリン酸化を介してタンパク合成を制御している。本研究では第3のmTOR 基質としてPRAS40を同定し、mTORによるリン酸化残基(Ser183)を決定した。PRAS40 はタンパク合成調節以外のmTORによる細胞機能制御に関与する可能性が高く、今後、その機能解明が重要な課題である。

  • Research Products

    (10 results)

All 2009 2008 2007

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (4 results)

  • [Journal Article] AMP-activated protein kinase phosphorylates glutamine:fructose-6-phosphate amidotransferase 1 at Ser243 to modulate its enzymatic activity2009

    • Author(s)
      Eguchi S., Oshiro N., Miyamoto T., Yoshino K., Okamoto S., Ono T., Kikkawa U., Yonezawa K.
    • Journal Title

      Genes Cells 14

      Pages: 179-189

    • Peer Reviewed
  • [Journal Article] Activation of mTORC1 in two steps : Rheb-GTP activation of catalytic function and increased binding of substrates to raptor2009

    • Author(s)
      Avruch J., Long X., Lin Y., Ortiz-Vega S., Rapley J., Papageorgiou A., Oshiro N., Kikkawa U.
    • Journal Title

      Biochem. Soc. Trans. 37

      Pages: 223-226

  • [Journal Article] Nutrient-dependent mTORC1 association with the ULK1-Atg13-FIP200 complex required for autophagy2009

    • Author(s)
      Hosokawa N., Hara T., Kaizuka T., Kishi C., Takamura A., Miura Y., Iemura S. I., Natsume T., Takehana K., Yamada N., Guan J. L., Oshiro N., Mizushima N.
    • Journal Title

      Mol. Biol. Cell (in press)

    • Peer Reviewed
  • [Journal Article] AMP-activated protein kinase phosphorylates Golgi-specific brefeldin A resistance factor 1 at Thr1337 to induce disassembly of Golgi apparatus2008

    • Author(s)
      Miyamoto T., Oshiro N., Yoshino K., Nakashima A., Eguchi S., Takahashi M., Ono Y., Kikkawa U., Yonezawa K.
    • Journal Title

      J. Biol. Chem. 283

      Pages: 4430-4438

    • Peer Reviewed
  • [Journal Article] The proline-rich Akt substrate of 40 kDa (PRAS40) is a physiological substrate of mammalian target of rapamycin complex 12007

    • Author(s)
      Oshiro N., Takahashi R., Yoshino K., Tanimura K., Nakashima A., Eguchi S., Miyamoto T., Hara K., Takehana K., Avruch J., Kikkawa U., Yonezawa K.
    • Journal Title

      J. Biol. Chem. 282

      Pages: 20329-20339

    • Peer Reviewed
  • [Journal Article] Identification of TBC7 having TBC domain as a novel binding protein to TSC1-TSC2 complex2007

    • Author(s)
      Nakashima A., Yoshino K., Miyamoto T., Eguchi S., Oshiro N., Kikkawa U., Yonezawa K.
    • Journal Title

      Biochem Biophys Res Commun 361

      Pages: 218-223

    • Peer Reviewed
  • [Presentation] The regulation of GFAT1 via AMPK signaling2008

    • Author(s)
      Eguchi S., Oshiro N., Miyamoto T., Sasaki T., Yonezawa K., Kikkawa U.
    • Organizer
      第60回日本細胞生物学会大会
    • Year and Date
      20080629-0701
  • [Presentation] Identification of PRAS40 (Proline-Rich Akt Substrate of 40 kDa) as a novel substrate of mTORC12007

    • Author(s)
      大城紀子, 吉川 潮
    • Organizer
      第30回日本分子生物学会年会・第80回日本生化学大会合同大会(BMB2007)
    • Year and Date
      20071211-15
  • [Presentation] AMPKの新規基質GFAT1の同定と機能解析2007

    • Author(s)
      江口賢史, 大城紀子, 米澤一仁, 吉川 潮
    • Organizer
      第30回日本分子生物学会年会・第80回日本生化学大会合同大会(BMB2007)
    • Year and Date
      20071211-15
  • [Presentation] AMPK regulates the morphology of Golgi through the phosphorylation of GBF12007

    • Author(s)
      宮本嵩史, 大城紀子, 米澤一仁, 吉川 潮
    • Organizer
      第30回日本分子生物学会年会・第80回日本生化学大会合同大会(BMB2007)
    • Year and Date
      20071211-15

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Published: 2010-06-10   Modified: 2016-04-21  

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