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Construction of metallo-catalysts with high reactivitites based on characters of selenoamino acid

Research Project

Project/Area Number 15K13660
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Inorganic chemistry
Research InstitutionNara Institute of Science and Technology

Principal Investigator

Matsuo Takashi  奈良先端科学技術大学院大学, 物質創成科学研究科, 准教授 (50432521)

Co-Investigator(Renkei-kenkyūsha) HIROTA Shun  奈良先端科学技術大学院大学, 物質創成科学研究科, 教授 (90283457)
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsセレノシステイン / 金属酵素 / サブチリシン / 合成化学 / 酵素反応 / ヘテロ元素 / 触媒・化学プロセス
Outline of Final Research Achievements

A variety of artificial metallo-biocatalysts have been developed aiming at catalytic reactions based on reactivities of metal complexes in protein cores with highly-ordered structures. For molecular design of the catalysts, we pay attentions to characters of elements that coordinate to the centered metal ion. In this context, this project has focuses on the characters of selenium as a coordinating element although amino acids with a selenium atom have been rarely employed for the construction of artificial metalloenzymes. We have attempted to construct a metal coordination site with selenocystein in subtilisin, a protease readily obtainable from conventional vendors, through chemical modification and to incorporate several transition metal ions into the site. We successfully optimized the conditions for the incorporation of selenocysteine and found that the metalloenzyme is able to mediate the reduction of ketones in the presence of suitable reducing reagents.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (7 results)

All 2016 2015 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Effects of Heme Electronic Structure and Distal Polar Interaction on Functional and Vibrational Properties of Myoglobin2016

    • Author(s)
      Y. Kanai, R. Nishimura, K. Nishiyama, T. Shibata, S. Yanagisawa, T. Ogura, T. Matsuo, S. Hirota, S. Neya, A. Suzuki, Y. Yamamoto
    • Journal Title

      Inorg. Chem.

      Volume: 55 Issue: 4 Pages: 1613-1622

    • DOI

      10.1021/acs.inorgchem.5b02520

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of a Procaspase-activating Compound on the Catalytic Activity of Mature Caspase-32015

    • Author(s)
      Takashi Matsuo, Keita Yamada, Masaya Ishida, Yoshiyuki Miura, Masaru Yamanaka, Shun Hirota
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 88 Issue: 9 Pages: 1221-1229

    • DOI

      10.1246/bcsj.20150139

    • NAID

      130005099082

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Experimental investigation on correlation between the reactivities of transition metal ions in protein core and the global protein flexibility2016

    • Author(s)
      akashi Matsuo, Takamasa Kono, Katsuya Gonda, Masaya Ishida, Shun Hirota
    • Organizer
      錯体化学会第66回討論会
    • Place of Presentation
      福岡大学(福岡県福岡市)
    • Year and Date
      2016-09-10
    • Related Report
      2016 Annual Research Report
  • [Presentation] チオールサブチリシンをモデルタンパク質としたタンパク質に結合した金属イオンの性質と分子全体の構造柔軟性との相関関係の実験的検証2016

    • Author(s)
      松尾 貴史、石田 昌也、河野 尊匡、権田 勝也、廣田 俊
    • Organizer
      第43回生体分子科学討論会
    • Place of Presentation
      名古屋大学(愛知県名古屋市)
    • Year and Date
      2016-06-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] 素材タンパク質の構造的特徴に基づく生体触媒の創成および反応性制御2016

    • Author(s)
      松尾貴史
    • Organizer
      第16回日本蛋白質科学会年会
    • Place of Presentation
      福岡国際会議場(福岡県福岡市)
    • Year and Date
      2016-06-07
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Correlation between the reactivity of a metal complex in a protein core and the global flexibility of the protein: Mechanistic study using thiol-subtilisin as a model protein2016

    • Author(s)
      Takashi Matsuo, Masaya Ishida, Takamasa Kono, Shun Hirota
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学(京都府京田辺市)
    • Year and Date
      2016-03-24
    • Related Report
      2015 Research-status Report
  • [Remarks] 松尾貴史 ホームページ

    • URL

      http://mswebs.naist.jp/LABs/hirota/tmatsuo/matsuo_jpn.html

    • Related Report
      2016 Annual Research Report 2015 Research-status Report

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Published: 2015-04-16   Modified: 2018-03-22  

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