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Synthesis and Reactions of Mo-Fe-S Clusters Toward Understanding of the Mechanism of Nitrogenase

Research Project

Project/Area Number 19H02733
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 34010:Inorganic/coordination chemistry-related
Research InstitutionKyoto University (2020-2021)
Nagoya University (2019)

Principal Investigator

Ohki Yasuhiro  京都大学, 化学研究所, 教授 (10324394)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2019: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywords鉄 / モリブデン / 硫黄 / ニトロゲナーゼ / 窒素固定 / 窒素
Outline of Research at the Start

本研究では、自然界の窒素固定を担う酵素ニトロゲナーゼの機能であるN2還元反応の機構解明に資する知見を得ることを目的とする。その目標達成に向けて、酵素活性中心の構造を部分的に模倣するキュバン型(立方体型)のMo-Fe-Sクラスターを合成し、N2の還元反応に用いる。このとき、位置選択的にFeを反応点とする設計を採用し、Mo-Fe-SクラスターのFeでN2を捕捉し変換できることを証明する。

Outline of Final Research Achievements

Biological reduction of nitrogen molecule (N2) is mediated by nitrogenaze enzyme, where a complex metal-sulfur cluster designated FeMo-cofactor is used. Despite of studies on the reactions of synthetic Mo-Fe-S clusters over the past nearly half century, activation and conversion of N2 on the Fe sites of Mo-Fe-S clusters remain elusive. In this research project, we synthesized a series of triangular Mo-S clusters as platforms to accommodate chlorides of iron-group metals M. The resultant cubic Mo-M-S clusters were subjected to N2 activation.
We also attempted to apply synthetic Fe-S clusters in biochemical studies, and in collaboration with biochemists, we were able to establish a new protocol to reconstitute proteins with artificial Fe-S clusters. This protocol turned out to be useful to elucidate the biosynthetic pathways of nitrogenase FeMo-cofactor.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ニトロゲナーゼの酵素活性中心FeMo-cofactorに関連深いMo-Fe-Sクラスター錯体を合成し、Feを反応点としてN2を捕捉した。この研究をさらに発展させれば、過去半世紀に渡り検討されてきた一方で誰も実現できていない、金属-硫黄クラスター錯体を触媒とする酵素模倣型のN2還元反応を実現できる可能性があり、さらには酵素機能を超える人工触媒の開発に向けた端緒が拓かれる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (26 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 10 results) Presentation (12 results) (of which Int'l Joint Research: 5 results,  Invited: 11 results) Book (1 results) Remarks (2 results)

  • [Int'l Joint Research] University of California, Irvine/University of Hawaii(米国)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Synthesis of Monophosphaferrocenes Revisited2022

    • Author(s)
      Masaoka Kakeru、Ohkubo Manami、Taue Haruka、Wakioka Masayuki、Ohki Yasuhiro、Ogasawara Masamichi
    • Journal Title

      ChemistrySelect

      Volume: 7 Issue: 3

    • DOI

      10.1002/slct.202104472

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tracing the incorporation of the “ninth sulfur” into the nitrogenase cofactor precursor with selenite and tellurite2021

    • Author(s)
      Tanifuji Kazuki、Jasniewski Andrew J.、Villarreal David、Stiebritz Martin T.、Lee Chi Chung、Wilcoxen Jarett、Okhi Yasuhiro、Chatterjee Ruchira、Bogacz Isabel、Yano Junko、Kern Jan、Hedman Britt、Hodgson Keith O.、Britt R. David、Hu Yilin、Ribbe Markus W.
    • Journal Title

      Nature Chemistry

      Volume: 13 Issue: 12 Pages: 1228-1234

    • DOI

      10.1038/s41557-021-00799-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Four-Electron Reduction of Dioxygen on a Metal Surface: Models of Dissociative and Associative Mechanisms in a Homogeneous System2021

    • Author(s)
      Hajime Kameo, Shigeyoshi Sakaki, Yasuhiro Ohki, Naoki Uehara, Takuya Kosukegawa, Hiroharu Suzuki, Toshiro Takao
    • Journal Title

      Inorg. Chem.

      Volume: 60 Issue: 3 Pages: 1550-1560

    • DOI

      10.1021/acs.inorgchem.0c02936

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cationic Ru-Se Complexes for Cooperative Si-H Bond Activation2020

    • Author(s)
      Marvin Oberling, Elisabeth Irran, Yasuhiro Ohki, Hendrik F. T. Klare, Martin Oestreich
    • Journal Title

      Organometallics

      Volume: 39 Issue: 24 Pages: 4747-4753

    • DOI

      10.1021/acs.organomet.0c00719

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A dinuclear Mo2H8 complex supported by bulky C5H2 tBu3 ligands2020

    • Author(s)
      Yasuhiro Ohki, Kodai Ishihara, Moeko Yaoi, Mizuki Tada, W. M. C. Sameera, Roger E. Cramer
    • Journal Title

      Chem. Commun.

      Volume: 56 Issue: 58 Pages: 8035-8038

    • DOI

      10.1039/d0cc03274c

    • NAID

      120006941036

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Metal-Sulfur Compounds in N2 Reduction and Nitrogenase-Related Chemistry2020

    • Author(s)
      Kazuki Tanifuji and Yasuhiro Ohki
    • Journal Title

      Chem. Rev.

      Volume: 120 Issue: 12 Pages: 5194-5251

    • DOI

      10.1021/acs.chemrev.9b00544

    • NAID

      120006891245

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of Dinuclear Mo‐Fe Hydride Complexes and Catalytic-Silylation of N22020

    • Author(s)
      Ishihara Kodai、Araki Yuna、Tada Mizuki、Takayama Tsutomu、Sakai Yoichi、Sameera W. M. C.、Ohki Yasuhiro
    • Journal Title

      Chemistry: A European Journal

      Volume: - Issue: 43 Pages: 9537-9546

    • DOI

      10.1002/chem.202000104

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Synthesis of an Asymmetric Mo-Fe-S Mimic of Nitrogenase Active Site2019

    • Author(s)
      Kazuki Tanifuji, Yasuhiro Ohki
    • Journal Title

      Methods Mol. Biol.

      Volume: 1876 Pages: 229-244

    • DOI

      10.1007/978-1-4939-8864-8_15

    • ISBN
      9781493988631, 9781493988648
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis of [Mo3S4] Clusters through Half-Sandwich Mo(V) Chlorides and Their Application as Platforms for [Mo3S4Fe] Cubes2019

    • Author(s)
      Yasuhiro Ohki, Ryota Hara, Kenichiro Munakata, Mizuki Tada, Tsutomu Takayma, Yoichi Sakai, Roger E. Cramer
    • Journal Title

      Inorg. Chem.

      Volume: 58 Issue: 8 Pages: 5230-5240

    • DOI

      10.1021/acs.inorgchem.9b00309

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Recent Advances in the Chemical Synthesis of Nitrogenase Model Clusters2019

    • Author(s)
      Kazuki Tanifuji, Yasuhiro Ohki
    • Journal Title

      Struct. Bond.

      Volume: 179 Pages: 33-61

    • DOI

      10.1007/430_2018_26

    • ISBN
      9783030258962, 9783030258979
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Bio-inspired Cubic Metal-Sulfur Clusters for N2 Activation2022

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      ACS Meeting Spring 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属-硫黄クラスターによる小分子変換反応2022

    • Author(s)
      大木 靖弘
    • Organizer
      近畿化学協会有機金属部会2021年度第4回例会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Hydride- or sulfur-supported Fe-containing cluster molecules for nitrogen reduction2021

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Activation of N2 and Small Molecules by Metal-Sulfur Cluster Molecules2021

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      LHFA virtual seminar
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属-硫黄クラスター錯体による小分子活性化2021

    • Author(s)
      大木 靖弘
    • Organizer
      有機合成化学研究所講演会(第36回)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 有機金属化学・錯体化学・生化学をつなぐ金属-硫黄クラスター錯体2021

    • Author(s)
      大木 靖弘
    • Organizer
      有機合成化学協会第33回若手研究者のためのセミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 金属-硫黄クラスターと酵素・生化学の接点を目指して2021

    • Author(s)
      大木 靖弘
    • Organizer
      岡山大学ナノ・バイオ融合によるエネルギー集積・高度利用研究拠点形成 ミニシンポジウム「酵素と化学の接点」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 金属-硫黄クラスター錯体による窒素分子の活性化2021

    • Author(s)
      大木 靖弘
    • Organizer
      統合物質創製化学研究推進機構 第6回国内シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 有機金属化学と生物無機化学の境界を志向したものづくり:ニトロゲナーゼを題材に2020

    • Author(s)
      大木 靖弘
    • Organizer
      徳島大学研究クラスター「有機合成化学を起点とするセンシング技術の開発と応用」特別講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Molybdenum-Containing Metal-Sulfur Clusters for Bio-Inspired N2 Activation2019

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      12th China-Japan Joint Symposium on Metal Cluster Compounds
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Organometallic Approach Toward Functional Analogues of the Nitrogenase Metallo-cofactors2019

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      第69回錯体化学討論会 シンポジウム” Metal-ligand cooperation:New design in the development of functional organometallic complexes”
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Bio-inspired N2 Activation by Cubic Metal-Sulfur Clusters2019

    • Author(s)
      Yasuhiro Ohki
    • Organizer
      International Congress on Pure & Applied Chemistry (ICPAC) Yangon 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 錯体化合物事典 鉄(生物無機化学)(分担執筆)2019

    • Author(s)
      増田秀樹、大木靖弘他多数
    • Total Pages
      1000
    • Publisher
      朝倉書店
    • ISBN
      9784254141054
    • Related Report
      2019 Annual Research Report
  • [Remarks] 京都大学化学研究所大木研究室

    • URL

      http://om.kuicr.kyoto-u.ac.jp

    • Related Report
      2021 Annual Research Report
  • [Remarks] 錯体触媒変換化学研究領域

    • URL

      http://om.kuicr.kyoto-u.ac.jp

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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