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2010 Fiscal Year Final Research Report

Distinct way to prepare the hyper-stable and stress-tolerant enzymes-halophilic enzyme engineering and hyper-functional cell production

Research Project

  • PDF
Project/Area Number 20580372
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied molecular and cellular biology
Research InstitutionKagoshima University

Principal Investigator

TOKUNAGA Masao  鹿児島大学, 農学部, 教授 (20112782)

Co-Investigator(Kenkyū-buntansha) ISHIBASHI Matsujiro  鹿児島大学, 農学部, 准教授 (20305163)
TOKUNAGA Hiroko  鹿児島大学, 農学部, 技能補佐員 (60381191)
Project Period (FY) 2008 – 2010
Keywords蛋白質・糖鎖工学 / 極限環境微生物 / 蛋白質発現 / 高機能化
Research Abstract

The amino acid composition of halophilic enzymes is in general characterized by an abundant content of acidic amino acid leading to high aqueous solubility without aggregation in both native and denatured states and hence allowing efficient renaturation of halophilic proteins after heat or denaturant treatment. The replacement of neutral or basic amino acid residues in non-halophilic proteins with acidic amino acid residues converted non-halophilic to halophilic proteins which show higher aqueous solubility and stability.

  • Research Products

    (7 results)

All 2010 2009 2008 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Halophilic beta-lactamase as a new solubilityand folding-enhancing tag protein : production of native human interleukin 1alpha and human neutrophil alpha-defensin2010

    • Author(s)
      Tokunaga H, Saito S, Sakai K, Yamaguchi R, Katsuyama I, Arakawa T, Onozaki K, Arakawa T, Tokunaga M
    • Journal Title

      Appl Microbiol Biotechnol

      Volume: 86(2) Pages: 649-658

    • Peer Reviewed
  • [Journal Article] Dimer-tetramer assembly of nucleoside diphosphate kinase from moderately halophilic bacterium Chromohalobacter salexigens DSM3043 : both residues 134 and 146 are critical for the tetrameric assembly2010

    • Author(s)
      H. Tokunaga, K. Izutsu, S. Arai, Y. Yonezawa, R. Kuroki, T. Arakwa, and M. Tokunaga.
    • Journal Title

      Enz. Microbial Technol

      Volume: 46 Pages: 129-135

    • Peer Reviewed
  • [Journal Article] Engineering of halophilic enzymes : two acidic amino acid residues at the carboxy-terminal region confer halophilic characterstics to Halomonas and Pseudomonas nucleoside diphosphate kinases2008

    • Author(s)
      Tokunaga, H., Arakawa, T., Tokunaga, M.
    • Journal Title

      Protein Sciences

      Volume: 17 Pages: 1603-1610

    • Peer Reviewed
  • [Presentation] 好塩性β-ラクタマーゼを可溶性タグとした融合蛋白質発現系の開発2010

    • Author(s)
      山口類、徳永廣子、斎藤尚子、逆井一樹、勝山巌、荒川友博、小野崎菊夫、荒川力、徳永正雄
    • Organizer
      2010日本農芸化学会大会
    • Place of Presentation
      東京
    • Year and Date
      2010-03-29
  • [Presentation] 高度好塩菌由来nucleoside diphosphate kinase変異体G114Rの解析2010

    • Author(s)
      石橋松二郎、岩佐達也、徳永正雄
    • Organizer
      2010日本農芸化学会大会
    • Place of Presentation
      東京
    • Year and Date
      2010-03-28
  • [Presentation] 好塩性付与蛋白質の分子育種2009

    • Author(s)
      徳永廣子、荒川力、山口類、徳永正雄
    • Organizer
      2009年日本農芸化学会大会
    • Place of Presentation
      福岡
    • Year and Date
      2009-03-28
  • [Remarks] 鹿児島大学農学部生物資源化学科応用分子微生物学研究室

    • URL

      http://chem.agri.kagoshima-u.ac.jp/Oyoseika/oubi/HP060703/top-040621.html

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Published: 2013-07-31  

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