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Enhancement of coenzyme A biosynthetic pathway using pantothenate kinase in Escherichia coli

Research Project

Project/Area Number 25450091
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

CHOHNAN Shigeru  茨城大学, 農学部, 教授 (70312775)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
KeywordsコエンザイムA / アセチル-CoA / マロニル-CoA / パントテン酸キナーゼ / CoA生合成経路 / パントテン酸供給経路 / 有用物質生産 / 大腸菌 / アセチル-CoAカルボキシラーゼ
Outline of Final Research Achievements

Intracellular coenzyme A (CoA), which functions as an acyl carrier in vivo, was increased using pantothenate kinase (CoaA) in Escherichia coli, with the ultimate aim of applying this cofactor engineering to the production of a useful compound. The E. coli CoA biosynthetic pathway was most efficiently enhanced by using a prokaryotic type III CoaA, and more than 70% of the formed CoA pool was accumulated as acetyl-CoA. The addition of pantothenate at millimolar concentrations to the culture medium was indispensable for enlarging the cellular CoA pool size. This effect was also observed when the pantothenate precursors, β-alanine and pantoate, were added. Furthermore, the coexpression of the enzymes functioning in the pantothenate biosynthetic pathway together with type III CoaA facilitated the enhancement of the de novo CoA biosynthesis in E. coli cells.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (6 results)

All 2015 2014 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) Remarks (3 results)

  • [Journal Article] Prokaryotic type III pantothenate kinase enhances coenzyme A biosynthesis in <i>Escherichia coli</i>2015

    • Author(s)
      Yuta Ogata, Shigeru Chohnan
    • Journal Title

      The Journal of General and Applied Microbiology

      Volume: 61 Issue: 6 Pages: 266-269

    • DOI

      10.2323/jgam.61.266

    • NAID

      130005120418

    • ISSN
      0022-1260, 1349-8037
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Effect of the addition of pantothenate and its precursors on coenzyme A content of Escherichia coli expressing exogenous pantothenate kinase2015

    • Author(s)
      Yuta Ogata, Shigeru Chohnan
    • Organizer
      日本微生物生態学会
    • Place of Presentation
      土浦市亀城プラザ(茨城県土浦市)
    • Year and Date
      2015-10-17
    • Related Report
      2015 Annual Research Report
  • [Presentation] Enhancement of coenzyme A biosynthetic pathway using pantothenate kinase2014

    • Author(s)
      Yuta Ogata, Shigeru Chohnan
    • Organizer
      114th General Meeting, American Society for Microbiology
    • Place of Presentation
      Boston Convention & Exibition Center (USA)
    • Related Report
      2013 Research-status Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      https://info.ibaraki.ac.jp/Profiles/5/0000444/profile.html

    • Related Report
      2015 Annual Research Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      http://info.ibaraki.ac.jp/Profiles/5/0000444/profile.html

    • Related Report
      2014 Research-status Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      http://info.ibaraki.ac.jp/Profiles/5/0000444/profile.html

    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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