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Analysis of the effect of AMPK on ubiquitination modification via novel substrate DDB1

Research Project

Project/Area Number 20K05845
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38030:Applied biochemistry-related
Research InstitutionTokyo University of Agriculture

Principal Investigator

Suzuki Tsukasa  東京農業大学, 応用生物科学部, 准教授 (20714588)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsAMPK / DDB1 / ユビキチン化修飾 / ユビキチン化 / DNA修復 / CRL4
Outline of Research at the Start

E3ユビキチンリガーゼのCRL4は、構成因子のDDB1が基質認識サブユニットであるDCAFsと結合することで基質のユビキチン化を行う。そのため、DDB1とDCAFsとの相互作用は重要であるが、その制御機構については不明な点が多い。
本研究は、予備実験によりAMPKの新規基質としてDDB1を見出し、AMPKによってDCAFsのひとつであり、DNA修復に重要なDDB2とDDB1との結合が低下する結果が得られた。本研究を推進することで栄養状態を感知しエネルギー代謝を制御するAMPKが、DDB1を介してCRL4によるユビキチン化修飾をも制御する、AMPKの新しい制御経路の発展につながることが期待できる。

Outline of Final Research Achievements

AMPK is a kinase that regulates intracellular energy homeostasis by inhibiting anabolism and activating catabolism. In this study, we identified DDB1, a component of the CUL4 E3 ubiquitin ligase complex, as a novel substrate for AMPK and showed that AMPK directly phosphorylates the serine residue of DDB1. This phosphorylation was also shown to inhibit the interaction between DDB1 and its binding factor, DDB2. The phosphorylation of DDB1 by AMPK was also shown to alter the localization of DDB1 from the nucleus to the cytoplasm. Taken together, these results indicate that AMPK regulates the CUL4 E3 ubiquitin ligase via phosphorylation of DDB1.

Academic Significance and Societal Importance of the Research Achievements

AMPKが関与するDDB1の新たな翻訳後修飾を明らかにしたことで、DDB1を構成因子とするCUL4 E3ユビキチンリガーゼの活性制御をより詳細なレベルで理解することができる。また、DDB1を含むCUL4ユビキチンリガーゼは核内および細胞質の両方にて基質のユビキチン化をおこなうが、本研究により、AMPKがDDB1をリン酸化することでCUL4の局在を細胞質へと変化させることがわかり、CUL4が核・細胞質にと多くある基質に対する選択性がAMPKによって制御されることが示された。また、DDB1は紫外線によるDNAダメージを修復する機能もある。したがって、これらの知見がDNA修復に対する一助になる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 1 results)

  • [Journal Article] Ca2+/Calmodulin induces translocation of membrane-associated TSC2 to the nucleus where it suppresses <i>CYP24A1</i> expression2022

    • Author(s)
      Kazami Machiko、Sakamoto Tomoya、Suzuki Tsukasa、Inoue Hirofumi、Kato Hayato、Kobayashi Ken-Ichi、Tadokoro Tadahiro、Yamamoto Yuji
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 87 Issue: 1 Pages: 45-53

    • DOI

      10.1093/bbb/zbac174

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sulforaphane suppresses the activity of sterol regulatory element-binding proteins (SREBPs) by promoting SREBP precursor degradation2022

    • Author(s)
      Miyata Shingo、Kodaka Manami、Kikuchi Akito、Matsunaga Yuki、Shoji Kenta、Kuan Yen-Chou、Iwase Masamori、Takeda Keita、Katsuta Ryo、Ishigami Ken、Matsumoto Yu、Suzuki Tsukasa、Yamamoto Yuji、Sato Ryuichiro、Inoue Jun
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 8715-8715

    • DOI

      10.1038/s41598-022-12347-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] MIG12 is involved in the LXR activation-mediated induction of the polymerization of mammalian acetyl-CoA carboxylase2021

    • Author(s)
      Izumi Akiko、Hiraguchi Haruka、Kodaka Manami、Ikeuchi Emina、Narita Junko、Kobayashi Rina、Matsumoto Yu、Suzuki Tsukasa、Yamamoto Yuji、Sato Ryuichiro、Inoue Jun
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 567 Pages: 138-142

    • DOI

      10.1016/j.bbrc.2021.06.040

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] AMP-activated protein kinase regulates β-catenin protein synthesis by phosphorylating serine/arginine-rich splicing factor 92021

    • Author(s)
      Matsumoto Eri、Matsumoto Yu、Inoue Jun、Yamamoto Yuji、Suzuki Tsukasa
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 534 Pages: 347-352

    • DOI

      10.1016/j.bbrc.2020.11.079

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] AMP-activated protein kinase regulates alternative pre-mRNA splicing by phosphorylation of SRSF12020

    • Author(s)
      Matsumoto Eri、Akiyama Kaho、Saito Takuya、Matsumoto Yu、Kobayashi Ken-Ichi、Inoue Jun、Yamamoto Yuji、Suzuki Tsukasa
    • Journal Title

      Biochemical Journal

      Volume: - Issue: 12 Pages: 2237-2248

    • DOI

      10.1042/bcj20190894

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Niclosamide activates the AMP-activated protein kinase complex containing the β2 subunit independently of AMP2020

    • Author(s)
      Tsukasa Suzuki, Momoko Kojima, Yu Matsumoto, Ken-Ichi Kobayashi, Jun Inoue, Yuji Yamamoto
    • Journal Title

      Biochem Biophys Res Commun .

      Volume: 533(4) Issue: 4 Pages: 758-763

    • DOI

      10.1016/j.bbrc.2020.09.071

    • Related Report
      2020 Research-status Report
    • Peer Reviewed

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Published: 2020-04-28   Modified: 2024-01-30  

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