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Studies on the elicitation of sweetness of sweet-tasting proteins.

Research Project

Project/Area Number 19780074
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Applied biochemistry
Research InstitutionKyoto University

Principal Investigator

MASUDA Tetsuya  Kyoto University, 大学院・地球環境学堂, 助教 (80311744)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥3,280,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥480,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords甘味タンパク質 / ソーマチン / 結晶構造解析 / 甘味 / 変異体 / Pichia pastoris / X線結晶構造解析 / 放射光
Research Abstract

Thaumatin is an intensely sweet-tasting protein. To clarify the structure-sweetness relationships in thaumatin, we performed high resolution crystal structure analysis. The results showed that overall structures of these mutants are identical to that of plant thaumatin. However the subtle conformational changes in the main chain of K67 were induced by mutation of R82. The surface electric potential on the cleft containing side of the thaumatin was dramatically changed by the mutation at R82. These results demonstrated that the strict surface electrostatic potentials at the specific site formed by R82 and K67 are required for thaumatin sweetness

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (29 results)

All 2010 2009 2008 2007

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (21 results)

  • [Journal Article] Interactions of the sweet-tasting proteins thaumatin and lysozyme with the human sweet-taste receptor.2009

    • Author(s)
      Ide N., Sato E., Ohta K., Masuda T., Kitabatake N.
    • Journal Title

      J. Agric. Food Chem. 57

      Pages: 5884-5890

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Interactions of the sweet-tasting proteins thaumatin and lysozyme with the human sweet-taste receptor.2009

    • Author(s)
      Ide N., Sato E., Ohta K., Masuda T., Kitabatake N
    • Journal Title

      J.Agric.Food Chem 57

      Pages: 5884-5890

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Critical molecular regions for elicitation of the sweetness of the sweet-tasting protein2008

    • Author(s)
      Ohta, K., Masuda, T., Ide, N., Kitabatake, N.
    • Journal Title

      thaumatin I. FEBS J. 275

      Pages: 3644-3652

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Critical molecular regions for elicitation of the sweetness of the sweet-tasting protein, thaumatin I.2008

    • Author(s)
      Ohta, K., Masuda, T., Ide, N.,and Kitabatake, N
    • Journal Title

      FEBS J 275

      Pages: 3644-3652

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of pre- and pro-sequence of thaumatin on the secretion by Pichia pastoris2007

    • Author(s)
      Ide N., Masuda, T., Kitabatake, N.
    • Journal Title

      Biochem. Biophys. Res. Commun 363

      Pages: 708-714

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Cloning of the thaumatin I cDNA and characterization of recombinant thaumatin I secreted Pichia pastoris2007

    • Author(s)
      Ide, N., Kaneko, R., Wada, R., Metha, A., Tamaki, S., Tsuruta, T., Fu j ita, Y., Masuda, T., Kitabatake, N.
    • Journal Title

      Biotechnol. prog 23

      Pages: 1023-1030

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of pre- and pro-sequence of thaumatin on the secretion by Pichia pastoris2007

    • Author(s)
      Ide N., Masuda, T., and Kitabatake, N
    • Journal Title

      Biochem. Biophys. Res. Commun. 363

      Pages: 708-714

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cloning of the thaumatin I cDNA and characterization of recombinant thaumatin I secreted Pichia pastoris.2007

    • Author(s)
      Ide, N., Kaneko, R., Wada, R., Metha, A., Tamaki, S., Tsuruta,
    • Journal Title

      Biotechnol. Prog 23

      Pages: 1023-1030

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 甘味タンパク質ソーマチンのX線結晶構造解析(1)リジン残基の重要性2010

    • Author(s)
      木子理美, 太田圭介, 桝田哲哉, 三上文三, 北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      東京大学
    • Year and Date
      2010-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンX線結晶構造解析(1)リジン残基の重要性2010

    • Author(s)
      木子理美、太田圭介、桝田哲哉、三上文三、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      東京大学(東京都)
    • Year and Date
      2010-03-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] 甘味タンパク質ソーマチンX線結晶構造解析(2)アルギニン82の重要性2010

    • Author(s)
      桝田哲哉、木子理美、太田圭介、三上文三、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      東京大学(東京都)
    • Year and Date
      2010-03-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] 甘味タンパク質ソーマチンのX線結晶構造解析(1)甘味活性におけるリジン残基の重要性2009

    • Author(s)
      桝田哲哉, 木子理美, 太田圭介, 三上文三, 北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡国際会議場
    • Year and Date
      2009-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンのX線結晶構造解析(2)甘味活性におけるアルギニン残基の重要性2009

    • Author(s)
      桝田哲哉, 木子理美, 太田圭介, 井出信幸, 三上文三, 北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡国際会議場
    • Year and Date
      2009-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンの部位特異的変異による甘味活性部位の解析2009

    • Author(s)
      太田圭介, 木子理美, 井出信幸, 桝田哲哉, 北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡国際会議場
    • Year and Date
      2009-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンの部位特異的変異による甘味活性部位の解析2009

    • Author(s)
      太田圭介、木子理美、井出信幸、桝田哲哉、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] 甘味タンパク質ソーマチンのX線結晶構造解析(1)甘味活性におけるリジン残基の重要性2009

    • Author(s)
      木子理美、太田圭介、井出信幸、桝田哲哉、三上文三、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] 甘味タンパク質ソーマチンのX線結晶構造解析(2)甘味活性におけるアルギニン残基の重要性2009

    • Author(s)
      桝田哲哉、木子理美、太田圭介、井出信幸、三上文三、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      福岡
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] フェニルチオカルバミド(PTC)に対するSTC-1細胞の応答2009

    • Author(s)
      桝田哲哉, Chen C, Monica, Sinnett-Smith, James, Rozengurt, Enrique
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名城大学(名古屋市)
    • Year and Date
      2009-03-27
    • Related Report
      2009 Final Research Report
  • [Presentation] 小麦登熟過程における種子タンパク質遺伝子の発現量に関する研究2008

    • Author(s)
      桝田哲哉、片桐実菜、小原雅子、北畠直文
    • Organizer
      日本食品科学工学会
    • Place of Presentation
      京都大学
    • Year and Date
      2008-09-07
    • Related Report
      2009 Final Research Report
  • [Presentation] 小麦登熟過程における種子タンパク質遺伝子の発現量に関する研究2008

    • Author(s)
      桝田哲哉、片桐実菜、小原雅子、北畠直文
    • Organizer
      日本食品科学工学会
    • Place of Presentation
      京都
    • Year and Date
      2008-09-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] 甘味タンパク質の甘味に対するNaC1および甘味阻害剤ラクチゾールの影響2008

    • Author(s)
      佐藤枝里子、井出信幸、桝田哲哉、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名城大学(名古屋市)
    • Year and Date
      2008-03-27
    • Related Report
      2009 Final Research Report
  • [Presentation] 培養細胞上に発現させたヒト甘味受容体の甘味タンパク質への応答2008

    • Author(s)
      井出信幸、桝田哲哉、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名城大学(名古屋市)
    • Year and Date
      2008-03-27
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンによる血糖値上昇抑制効果2008

    • Author(s)
      谷口哲一、川元麻衣子、桝田哲哉、北畠直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名城大学(名古屋市)
    • Year and Date
      2008-03-27
    • Related Report
      2009 Final Research Report
  • [Presentation] 甘味タンパク質ソーマチンによる血糖値上昇抑制効果2008

    • Author(s)
      谷口 哲一、川元 麻衣子、桝田 哲哉、北畠 直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] 培養細胞上に発現させたヒト甘味受容体の甘味タンパク質への応答2008

    • Author(s)
      井出 信幸、桝田 哲哉、北畠 直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] 甘味タンパク質の甘味に対するNaClおよび甘味阻害剤ラクチゾールの影響2008

    • Author(s)
      佐藤 枝里子、井出 信幸、桝田 哲哉、北畠 直文
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] フェニルチオカルバミド(PTC)に対するSTC-1細胞の応答2008

    • Author(s)
      桝田 哲哉、Chen C, Monica、Sinnett-Smith, James、Rozengurt, Enrique
    • Organizer
      日本農芸化学会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] リゾチームの甘味特性2007

    • Author(s)
      桝田哲哉、井出信幸、北畠直文
    • Organizer
      日本食品科学工学会, 関西支部大会
    • Place of Presentation
      京都大学
    • Year and Date
      2007-11-09
    • Related Report
      2009 Final Research Report
  • [Presentation] リゾチームの甘味特性2007

    • Author(s)
      桝田哲哉、井出信幸、北畠直文
    • Organizer
      日本食品科学工学会
    • Place of Presentation
      京都
    • Year and Date
      2007-11-09
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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