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Elucidation of Activation Mechanism of Pathogen Effector Proteins by Yeast Genetic System and Structural Analysis

Research Project

Project/Area Number 16K07668
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied microbiology
Research InstitutionKagawa University

Principal Investigator

Tabuchi Mitsuaki  香川大学, 農学部, 教授 (00294637)

Co-Investigator(Kenkyū-buntansha) 櫻庭 春彦  香川大学, 農学部, 教授 (90205823)
Research Collaborator Ohnishi Kouhei  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsエフェクター / 青枯病菌 / 出芽酵母 / Ⅲ型分泌装置 / グルタチオン / チオレドキシン / 酵母 / 青枯病 / 病原因子 / 結晶構造解析
Outline of Final Research Achievements

Many bacterial pathogens express their virulence by injecting the effector proteins into host cells. In this study, we investigated the host factor-dependent activation mechanism of the effector RipAY and RipAA derived from the phytopathogenic bacterium Ralstonia solanacearum. As a result, it was revealed that RipAY formed a complex with thioredoxin, which is a host activating factor, at a molecular ratio of 1: 2. In addition, we found that RipAA is a multi-domain protein consisting of a membrane localization domain, an autoinhibitory domain, and a growth inhibitory domain. It also clarified that RipAA was activated by phosphorylation via the plasma membrane targeting.

Academic Significance and Societal Importance of the Research Achievements

ヒト及び植物に感染する病原菌は、エフェクターを宿主細胞内に注入することにより宿主内の免疫機能を阻害することで感染を成立させている。エフェクターの多くは、宿主細胞に注入されることでその活性を宿主内因子により活性化されることが知られており、これはエフェクターの活性により病原菌自身の増殖が阻害されないためにも有効であり、また、宿主内においてその活性を時間的空間的に制御されることで効率的に感染を引き起こしていることが考えられる。本研究によってこれらのエフェクターの宿主依存的な活性化メカニズムの一旦を明らかにすることができ、病原菌の感染戦略の理解に繋がる成果であると言える。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (36 results)

All 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (28 results) (of which Int'l Joint Research: 11 results,  Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] CRAG/University of Barcelona(スペイン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] バルセロナ大学(スペイン)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] INRA(フランス)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Evaluation of various cultivars of Actinidia species and breeding source Actinidia rufa for resistance to Pseudomonas syringae pv. actinidiae biovar 32018

    • Author(s)
      Kisaki Gan、Tanaka Sawa、Ishihara Ayumi、Igarashi Chika、Morimoto Takayuki、Hamano Kohei、Endo Atsuko、Sugita-Konishi Saeko、Tabuchi Mitsuaki、Gomi Kenji、Ichimura Kazuya、Suezawa Katsuhiko、Otani Mamoru、Fukuda Tetsuo、Manabe Tetsuro、Fujimura Toshio、Kataoka Ikuo、Akimitsu Kazuya
    • Journal Title

      Journal of General Plant Pathology

      Volume: 84 Issue: 6 Pages: 399-406

    • DOI

      10.1007/s10327-018-0804-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The effector AWR5 from the plant pathogen Ralstonia solanacearum is an inhibitor of the TOR signalling pathway.2016

    • Author(s)
      Popa C, Li L, Gil S, Tatjer L., Hashii K, Tabuchi M, Coll NS, Arino J, Valls M
    • Journal Title

      Scientific Reports

      Volume: 6 Issue: 1 Pages: 27058-27058

    • DOI

      10.1038/srep27058

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modification of Bacterial Effector Proteins Inside Eukaryotic Host Cells.2016

    • Author(s)
      Popa CM, Tabuchi M, Valls M
    • Journal Title

      Frontiers in Cellular and Infection Microbiology

      Volume: 6 Pages: 73-73

    • DOI

      10.3389/fcimb.2016.00073

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 植物病原菌エフェクターRipAYの宿主チオレドキシン依存的な活性化機構の解析2018

    • Author(s)
      藤原祥子, 池尻篤生, 田中直孝, 田淵光昭.
    • Organizer
      日本農芸化学会2018年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スイカ果実汚斑病細菌病菌推定エフェクターAave_4606は植物チオレドキシン依存的にGSH分解活性を獲得する2018

    • Author(s)
      藤原祥子, 池尻篤生, 田中直孝, 田淵光昭.
    • Organizer
      平成30年度日本植物病理学会関西部会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 植物病原菌エフェクターRipAAの機能解析2018

    • Author(s)
      平田篤司, 北囿喬斗, 白井沙樹, 田中直孝, 田淵光昭.
    • Organizer
      第36回 YEAST WORKSHOP
    • Related Report
      2018 Annual Research Report
  • [Presentation] Functional analysis of Ralstonia solanacearum effector, RipAA using yeast expression system2018

    • Author(s)
      Hirata, A., Kitasono, T., Shirai, S., Fujiwara, S., Tanaka, N., Tabuchi, M.
    • Organizer
      Phytogene Symposium X
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Functional analysis of the interaction between R. solanacearum effector RipAY and activator thioredoxin2018

    • Author(s)
      Ikejiri, A., Fujiwara, S., Tanaka, N., Tabuchi, M.
    • Organizer
      Phytogene Symposium X
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acidovorax citrulli putative effector, Aave_4606 exhibits glutathione degradation activity by thioredoxin from host plant2018

    • Author(s)
      Fujiwara, S., Tanaka, N., Tabuchi, M.
    • Organizer
      Phytogene Symposium X
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The role of type-III secretion effectors from Pseudomonas syringae pv. actinidiae biovar 3 in virulence on kiwifruit2018

    • Author(s)
      Tabuchi, M.
    • Organizer
      Phytogene Symposium X
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 出芽酵母セラミド合成酵素サブユニットLip1の機能解析2017

    • Author(s)
      石野裕子、吉川大地、谷元洋、橋井圭介、田中直孝、田淵光昭
    • Organizer
      日本農芸化学会 2017年度京都大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] PIL1とSUR7ファミリーは協調的に作用してエイソソーム機能を制御する2017

    • Author(s)
      橋井圭介、田原悠平、宮田真人、八重佳織、田中直孝、田淵光昭
    • Organizer
      日本農芸化学会 2017年度京都大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 病原菌エフェクターの膜局在化に依存した活性化機構の解析2017

    • Author(s)
      北囿喬斗、忻詩博、田中直孝、田淵光昭
    • Organizer
      日本農芸化学会 2017年度京都大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 病原菌の狡猾さを酵母で解く:病原因子エフェクターの分子メカニズムの解明2017

    • Author(s)
      田淵 光昭
    • Organizer
      かがわ糖質バイオフォーラム 複合糖質・糖鎖研究会
    • Place of Presentation
      e-とぴあ・かがわ内 BBスクエア
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 酵母膜ドメイン・エイソソームの構造・機能に関わる遺伝子群の解析2016

    • Author(s)
      橋井圭介, 田原悠平, 宮田真人, 八重佳織, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] セラミド合成酵素サブユニットLip1の機能解析2016

    • Author(s)
      石野裕子, 吉川大地, 谷元洋, 橋井圭介, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] 病原菌エフェクターの膜局在化に依存した活性化機構の解析2016

    • Author(s)
      北囿喬斗, 忻詩博, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] 酵母小胞体に局在する病原菌エフェクターRipQの機能解析2016

    • Author(s)
      佐々奈於美, 北囿喬斗, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] 宿主チオレドキシンにより活性化する病原菌エフェクターRipAYの解析2016

    • Author(s)
      池尻篤生, 藤原祥子, 林順司, 櫻庭春彦, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] 酵母発現系を用いた病原菌エフェクターRipAYの未知標的の探索2016

    • Author(s)
      杉本美帆, 藤原祥子, 川添智貴, 田中直孝, 田淵光昭.
    • Organizer
      第34回 YEAST WORKSHOP
    • Place of Presentation
      島根大学
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Presentation] A plant pathogen effector, RipAA causes growth inhibiton that is stimulated through membrane localization and subsequent phosphorylation in yeast2016

    • Author(s)
      Kitasono, T., Shin, S., Tanaka, N., and Tabuchi, M.
    • Organizer
      14th International Congress on Yeasts
    • Place of Presentation
      Awaji Yumebutai.
    • Year and Date
      2016-09-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Eisosome related proteins, Pil1 and six tetraspanning membrane proteins cooperatively regulate normal eisosome function, which is required for both heat and osmotic tolerance2016

    • Author(s)
      Hashii, K., Yae, K., Tanaka, N., and Tabuchi, M.
    • Organizer
      14th International Congress on Yeasts
    • Place of Presentation
      Awaji Yumebutai.
    • Year and Date
      2016-09-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 膜局在依存性の増殖阻害を引き起こす機能未知エフェクターの機能解析2016

    • Author(s)
      北囿喬斗, 忻 詩博, 加本佳大, 田中直孝, 田淵光昭
    • Organizer
      酵母遺伝学フォーラム 第49回研究報告会
    • Place of Presentation
      シーサイドホテル舞子ビラ神戸あじさいホール.
    • Year and Date
      2016-09-09
    • Related Report
      2016 Research-status Report
  • [Presentation] Pil1と4回膜貫通タンパク質は正常なeisosome形成を協調的に制御している2016

    • Author(s)
      橋井圭介, 八重佳織, 田中直孝, 田淵光昭
    • Organizer
      酵母遺伝学フォーラム 第49回研究報告会
    • Place of Presentation
      シーサイドホテル舞子ビラ神戸あじさいホール.
    • Year and Date
      2016-09-09
    • Related Report
      2016 Research-status Report
  • [Presentation] Ralstonia solanacearum effector, RipAY exhibits robust γ-glutamy cyclotransferase activity when stimulated by eukaryotic thgioredoxins2016

    • Author(s)
      Tabuchi, M., Fujiwara, S., Ohnishi, O., Popa, C., Valls, M., Genin, S., and Tanaka, N.
    • Organizer
      The Sixth International Bacterial Wilt Sympodium
    • Place of Presentation
      Toulouse, France
    • Year and Date
      2016-07-03
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 膜局在依存性の増殖阻害を引き起こす機能未知エフェクターの制御機構の解明2016

    • Author(s)
      北囿喬斗, 忻 詩博, 藤原祥子, 田中直孝, 田淵光昭.
    • Organizer
      日本農芸化学会中四国支部第45回講演会
    • Place of Presentation
      香川大学農学部
    • Related Report
      2016 Research-status Report
  • [Presentation] MCC/eisosomeに局在する4回膜貫通タンパク質の機能解析2016

    • Author(s)
      橋井圭介, 八重佳織, 田中直孝, 田淵光昭.
    • Organizer
      日本農芸化学会中四国支部第45回講演会
    • Place of Presentation
      香川大学農学部
    • Related Report
      2016 Research-status Report
  • [Presentation] Analysis of the activation mechanism of Ralstonia solanacearum effector RipAY by the host thioredoxins2016

    • Author(s)
      Ikejiri, A., Fujiwara, S., Tanaka, N., and Tabuchi, M.
    • Organizer
      Phytogene Symposium VIII
    • Place of Presentation
      Kagawa International Conference Hall.
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Functional analysis of the Ralstonia solanacearum effector RipQ/RSp1277 expressed in yeast2016

    • Author(s)
      Sasa, N., Tanaka, N., and Tabuchi, M.
    • Organizer
      Phytogene Symposium VIII
    • Place of Presentation
      Kagawa International Conference Hall.
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Ralstonia solanacearum effector, RipAA causes growth inhibition that is stimulated through membrane localization and subsequent phosphorylation in yeast2016

    • Author(s)
      Kitasono, T., Shin, S., Fujiwara, S., Tanaka, N., and Tabuchi, M.
    • Organizer
      Phytogene Symposium VIII
    • Place of Presentation
      Kagawa International Conference Hall.
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Functional analysis of plant pathogen effector proteins in yeast2016

    • Author(s)
      Tabuchi, M.
    • Organizer
      Phytogene Symposium VIII
    • Place of Presentation
      Kagawa International Conference Hall.
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Remarks] 田淵研究室

    • URL

      https://www.ag.kagawa-u.ac.jp/mtabuchi/index.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 田淵研究室ホームページ

    • URL

      http://www.ag.kagawa-u.ac.jp/mtabuchi/index.html

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-01-27  

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