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Development of Signal Peptide Optimization Tool

Research Project

Project/Area Number 23656522
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Biofunction/Bioprocess
Research InstitutionNagoya University

Principal Investigator

NAKANO Hideo  名古屋大学, 生命農学研究科, 教授 (00237348)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords生物機能工学 / 微生物 / 分泌生産 / シグナルペプチド / 酵素 / 酵母 / ゲノムライブラリー
Research Abstract

The secretion level of foreign protein in recombinant microbe is strongly dependent onthe combination of signal peptides (SPs) and the target protein; therefore optimization of SP sequence to each target protein is a crucial step to maximize the productivity of the secreted protein in heterogenous expression both in prokaryote and eukaryote.In this research, we have developed a novel method to adjust SP for each target protein utilizing the library of endogenous signal peptides of host cells, named signal peptide optimization tool (SPOT), which can easily make a library of SP fused to a target protein without any interfacial sequence. As a model system, beta-galactosidase from Aspergillus oryzae was used as a target protein for the secretion from Saccharomyces secrevisiae, a typical eukaryotic expression host, and demonstrated that several SPs giving a larger amount of secreted protein from the recombinant yeast were found by the screening of relatively a small number of independent clones. In addition, a correlation between the secretion efficiency and the D-score of each signal peptide analyzed by Signal P software was found, suggesting the use of the software would be helpful to increase the quality of the library. The developed method can be used for variety of proteins in a variety of host cells.

Report

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

    (4 results)

All 2012 Other

All Presentation (4 results)

  • [Presentation] 酵母シグナルペプチドライブラリーを用いたシグナルペプチド最適化ツールの開発2012

    • Author(s)
      原翔一、菅原知宏、佐原健彦、扇谷悟、河原崎泰昌、兒島孝明、中野秀雄
    • Organizer
      日本農芸化学会 2012 大会
    • Place of Presentation
      京都
    • Related Report
      2012 Final Research Report
  • [Presentation] 酵母シグナルペプチドライブラリーを用いたシグナルペプチド最適化ツールの開発に関する研究2012

    • Author(s)
      原翔一、菅原知宏、佐原健彦、扇谷悟、河原崎泰昌、兒島孝明、中野秀雄
    • Organizer
      日本農芸化学会中部支部第165回例会
    • Place of Presentation
      名古屋
    • Related Report
      2012 Final Research Report
  • [Presentation] 酵母シグナルペプチドライブラリーを用いたシグナルペプチド最適化ツールの開発に関する研究2012

    • Author(s)
      原翔一
    • Organizer
      日本農芸化学会中部支部例会
    • Place of Presentation
      名古屋
    • Related Report
      2012 Annual Research Report
  • [Presentation] 酵母シグナルペプチドライブラリーを用いたシグナルペプチド最適化ツールの開発

    • Author(s)
      原翔一、菅原知宏、佐原健彦、扇谷悟、河原崎泰昌、兒島孝明、中野秀雄
    • Organizer
      日本農芸化学会2012大会
    • Place of Presentation
      京都市
    • Related Report
      2011 Research-status Report

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

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