• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Analysis of unknown proteins coded in glucoside -3- dehydrogenase operon

Research Project

Project/Area Number 17K05924
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Bio-related chemistry
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Tsugawa Wakako  東京農工大学, 工学(系)研究科(研究院), 准教授 (80376871)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsグルコシド-3-脱水素酵素 / 鉄硫黄クラスタ― / 直接電子移動 / シトクロムc / ヒッチハイカー / シャペロン / グルコシド3脱水素酵素 / TAT輸送シグナル / ヒッチハイカー蛋白 / ジスルフィド結合 / グルコシド 3-脱水素酵素 / 電子受容体 / Halomonas / Rhizobium radiobacter / サブユニット / 分子内電子伝達 / フラビンアデニンジヌクレオチド / 鉄イオウクラスター / ヘム / 分子間電子伝達 / 機能解析
Outline of Final Research Achievements

Glucoside 3- dehydrogenase (G3DH) catalyzes the oxidation of the hydroxy group on the C-3 position of pyranose and shows broad substrate specificity. Due to unique site specificity and wide substrate specificity, G3DHs can be used for detection or synthesis of sugar derivatives. However, few studies have focused on the fundamental biochemical properties of G3DH.
In this study, we isolated the G3DH gene from Rhizobium radiobacter, and reported that the genes encoding catalytic subunit (subunit I), hitch-hiker subunit (subunit II), and cytochrome c (CYTc). These proteins were recombinantly expressed in Escherichia coli and characterized. Subunit I-II complex showed G3DH activity, EPR and ICP-OES analyses revealed that subunit I contains one 3Fe-4S type iron-sulfur cluster which plays an important role in the electron transfer from FAD to CYTc. We also demonstrated that CYTc mediate the electron transfer from G3DH to electrode without the artificial electron mediator.

Academic Significance and Societal Importance of the Research Achievements

多くの糖類脱水素酵素と異なりG3DHは糖の3 位を酸化する特異な酵素であるため特殊な糖の計測、合成などの応用研究が進められてきたが構造や機能に関する情報は乏しかった。
G3DHは酵素反応を触媒するSubIサブユニットと、機能不明のSubIIサブユニットからなる。またゲノム上ではこれらをコードする遺伝子の下流にORF3蛋白の配列がある。
本研究の結果subIでは糖を酸化し、放出された電子が補酵素のFAD、3Fe4S型の鉄硫黄クラスタを経て、シトクロムcであるORF3へと授受されることを解明した。またCYTcを介して電極へ電子移動することを示し埋め込み型酵素電極への応用の可能性を示した。。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Elucidation of the intra- and inter-molecular electron transfer pathways of glucoside 3-dehydrogenase2018

    • Author(s)
      Ryota Miyazaki ,TomohikoYamazaki ,KeiichiYoshimatsu , Katsuhiro Kojima , Ryutaro Asano Koji Sode , Wakako Tsugawa
    • Journal Title

      Bioelectrochemistry

      Volume: 122 Pages: 115-122

    • DOI

      10.1016/j.bioelechem.2018.03.001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] グルコシド 3-脱水素酵素サブユニット スワッピング が酵素活性に与える影響2019

    • Author(s)
      謝 理惠 ,宮崎 諒太 ,平賀 健太郎 ,早出 広司 ,津川 若子
    • Organizer
      酵素工学研究会第82回講演会ポスター発表
    • Related Report
      2019 Annual Research Report
  • [Presentation] Elucidation of the intra- and inter-molecular electron transfer pathways of glucoside 3-dehydrogenasefrom Rhizobium radiobacter2018

    • Author(s)
      津川若子
    • Organizer
      The 15th Japan-China-Korea Joint Symposium on Enzyme Engineering.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] FAD依存型グルコース脱水素酵素に対する電子受容体タンパク質の検討2018

    • Author(s)
      柳瀬 琢望、小嶋 勝博、津川 若子、浅野 竜太郎、早出 広司
    • Organizer
      電気化学会第85回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Electrochemical Properties of Glucoside 3-Dehydrogenase, an Enzyme for 1,5-Anhydro-D-Glucitol Sensing2017

    • Author(s)
      Tomohiko Yamazaki, Ryutaro Asano, Katsuhiro Kojima, Ryota Miyazaki, Koji Sode, Wakako Tsugawa
    • Organizer
      XXIV International Symposium on Bioelectrochemistry and Bioenergetics of the Bioelectrochemical Society
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi