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Engineering of monomer supplying enzyme for enhanced biopolymer production

Research Project

Project/Area Number 23710102
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental technology/Environmental materials
Research InstitutionHokkaido University

Principal Investigator

WATANABE Tsuyoshi  北海道大学, 大学院・工学研究院, 博士研究員 (40599601)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsアセトアセチル CoA レダクターゼ / アセトアセチル-CoAレダクターゼ / 3ヒドロキシアルカン酸ベースポリマー / 進化工学
Research Abstract

Acetoacetyl-CoA reductase (PhaB) catalyzes the reduction of acetoacetyl-CoA into 3-hydroxubutyryl-CoA using NADPH as a reducing power.3-Hydroxybutyryl-CoA serves as a monomer substrate for the microbial polyester, polyhydroxybutyrate. The aim of this study is to engineer PhaB for enhancing the enzymatic activity. The kinetic analysis of the selected mutants revealed that they possess enhanced turnover rate. The effectiveness of the obtained mutants of PhaB on polyhydroxybutyrate production was evaluated using Corynebacterium glutamicum, indicating that the content of polyhydroxybutyrate was increased up to 3-fold compared to the wild-type PhaB.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (8 results)

All 2013 2012 2011

All Presentation (8 results)

  • [Presentation] 動力学的解析および立体構造に基づいた進化形アセトアセチル-CoAレダクターゼの高活性化メカニズムの解明2013

    • Author(s)
      渡辺剛志、松本謙一郎、本橋廉、池田弘二、田中良和、姚閔、田中勲、田口精一
    • Organizer
      日本農芸化学会大会
    • Place of Presentation
      東北大学、仙台
    • Year and Date
      2013-03-25
    • Related Report
      2012 Final Research Report
  • [Presentation] 動力学的解析および立体構造に基づいた進化型アセトアセチル-CoAレダクターゼの高活性化メカニズムの解明2013

    • Author(s)
      渡辺剛志、松本謙一郎、本橋廉、池田弘二、田中良和、姚閔、田中勲、田口精一
    • Organizer
      日本農芸化学会
    • Place of Presentation
      東北大学(仙台市)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 進化工学的改変によるPhaB の速度論的解析とPHB生産性の向上2012

    • Author(s)
      渡辺剛志、宋育陽、松本謙一郎、大井俊彦、田口精一
    • Organizer
      日本農 芸化学会北 海道支部学術講演会
    • Place of Presentation
      北海道大学、札幌
    • Year and Date
      2012-11-03
    • Related Report
      2012 Final Research Report
  • [Presentation] Improvement of polyhydroxybutyrate production by the engineered acetyl-CoA reductase in Corynebacterium glutamicum2012

    • Author(s)
      T. Watanabe, Y. Song, K. Matsumoto, T. Ooi, S. Taguchi
    • Organizer
      15th International Biotechnology Symposium and Exhibition
    • Place of Presentation
      Daegu, Korea, EXCO.
    • Year and Date
      2012-09-17
    • Related Report
      2012 Final Research Report
  • [Presentation] Improvement of polyhydroxybutyrate production by the engineered ecetoacetyl-CoA reductase in Corynebacterium glutamicum2012

    • Author(s)
      Tsuyoshi Watanabe, Yuyang Song, Ken'ichiro Matsumoto, Toshihiko Ooi, Seiichi Taguchi
    • Organizer
      IBS
    • Place of Presentation
      EXco,(Daegu, Korea)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 進化工学的改変による高活性PhaBの速度論的解析とPHB生産性の向上2012

    • Author(s)
      渡辺剛志、 宋育陽、 松本謙一郎、 大井俊彦、 田口精一
    • Organizer
      日本農芸化学会北海道支部
    • Place of Presentation
      北海道大学(札幌市)
    • Related Report
      2012 Annual Research Report
  • [Presentation] アセトアセチルCoAレダクターゼ高活性変異体の解析とそれを用いたCorynebacterium glutamicumによるPHB生産の増強2012

    • Author(s)
      渡辺剛志、宋育陽、松本謙一郎、大井俊彦、田口精一
    • Organizer
      日本農芸化学会大会
    • Place of Presentation
      京都女子大学(京都市)
    • Related Report
      2011 Research-status Report
  • [Presentation] PHA生合成系におけるモノマー供給酵素アセトアセチル-CoAレダクターゼの高活性変異体の酵素特性2011

    • Author(s)
      渡辺剛志、早坂知士、池田弘二、本橋廉、松本謙一郎、田口精一
    • Organizer
      日本生物工学会大会
    • Place of Presentation
      東京工業大学(小金井市)
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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