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Elucidation of mobile loop functions in food-related enzymes

Research Project

Project/Area Number 21380064
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied biochemistry
Research InstitutionKyoto University

Principal Investigator

MIKAMI Bunzo  京都大学, 大学院・農学研究科, 教授 (40135611)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2009: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Keywordsタンパク質工学 / 応用構造生物学 / X線結晶構造解析 / 酵素反応機構 / 酵素 / タンパク質構造変化 / フレキシブルループ / 酵素反応 / 構造生物学
Research Abstract

The functions of proteins are usually expressed by conformational changes in loop regions. We have investigated the mobile loops in food-related enzymes that are used in food industry. The mobile loops in the active sites of.-amylase and alginate lyase that are important for incorporation of substrate and release of product are analyzed by X-ray crystal analyses of their mutant enzymes. In order to reveal the enzyme mechanism of protein-glutaminase, a mutant of pro protein-glutaminase(A47Q) was prepared. It was found that the mutated Gln47 formed Michaelis complex and S-acyl covalent intermediate with a catalytic cysteine residue.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (22 results)

All 2012 2011 2010 2009 Other

All Journal Article (8 results) (of which Peer Reviewed: 7 results) Presentation (10 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Induced fit motion of a lid loop involved in catalysis of alginate lyase A1 III2012

    • Author(s)
      Mikami B., Ban M., Suzuki S., Yoon HY., Miyake O, Yamasaki M., Maruyama Y., Hashimoto W., Murata K
    • Journal Title

      Acta Crystallogr. Sect D Biol. Cryst

      Volume: (in press)

    • NAID

      120004920434

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Crystallization and preliminary X-ray analysis of alginate importer from Sphingomonas sp2012

    • Author(s)
      Maruyama Y., Itoh T., Nishitani Y., Mikami B., Hashimoto W., Murata K
    • Journal Title

      A1. Acta Crystallogr. Sect. F Struct. Biol. Cryst. Commun

      Volume: 68 Issue: 3 Pages: 317-320

    • DOI

      10.1107/s1744309112001893

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] X-ray structures of transferrins and related proteins2011

    • Author(s)
      Mizutani K., Toyoda M., Mikami B
    • Journal Title

      Biochim Biophys Acta

      Volume: 1820 Issue: 3 Pages: 203-211

    • DOI

      10.1016/j.bbagen.2011.08.003

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Crystal structures of protein glutaminase and its pro forms converted into enzyme-substrate complex2011

    • Author(s)
      Hashizume R., Maki Y., Mizutani K., Takahashi N., Matsubara H., Sugita A., Sato K., Yamaguchi S., Mikami B
    • Journal Title

      J. Biol. Chem

      Volume: 286 Issue: 44 Pages: 38691-38702

    • DOI

      10.1074/jbc.m111.255133

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] The crystal structure of SDR-type pyridoxal 4-dehydrogenase of Mesorhizobium loti.2011

    • Author(s)
      Chu H.N., Mikami B., 他2名
    • Journal Title

      Biosci.Biotechnol.Biochem.

      Volume: 75 Pages: 388-390

    • NAID

      10027898248

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression, purification and preliminary crystallization of amaranth 11S proglobulin seed storage protein from Amaranthus hypochondriacus L.2010

    • Author(s)
      Tandang-Silvas M.R., Mikami B., 他5名
    • Journal Title

      Acta Cryatallogr.Sect.F

      Volume: 66 Pages: 919-922

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-throughput construction of expression system using yeast Pichia pastoris, and its application to membrane proteins.2010

    • Author(s)
      Mizutani K., Mikami B., 他3名
    • Journal Title

      Protein Expr.Purif.

      Volume: 77 Pages: 1-8

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2010

    • Author(s)
      三上文三, 丸山伸之, 内海成
    • Journal Title

      大豆のすべて (喜多村啓介他編集) 第4章2節2 グロブリンタンパク質(サイエンスフォーラム)

      Pages: 115-121

    • Related Report
      2009 Annual Research Report
  • [Presentation] X線結晶構造解析によるダイズβ-アミラーゼの反応機構の解明2012

    • Author(s)
      三上文三, 他5名
    • Organizer
      2012年度農芸化学会大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2012-03-24
    • Related Report
      2011 Final Research Report
  • [Presentation] X線結晶構造解析によるダイズβ-アミラーゼの反応機構の解明2012

    • Author(s)
      三上文三、奥村覚二、山田壮介、安達基泰、水谷公彦、高橋延行
    • Organizer
      日本農芸化学会2012年度大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2012-03-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] プロ酵素の変異体(A47Q)の構造に基づいたプロテイングルタミナーゼの触媒機構の解明2011

    • Author(s)
      牧由起子, 他8名
    • Organizer
      第11回日本蛋白質科学会年会
    • Place of Presentation
      ホテル阪急エキスポパーク(大阪府)
    • Year and Date
      2011-06-09
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 結晶構造に基づくプロテイングルタミナーゼの酵素機能解析2011

    • Author(s)
      牧由起子, 他7名
    • Organizer
      2011年度農芸化学会大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2011-03-27
    • Related Report
      2011 Final Research Report
  • [Presentation] 結晶構造に基づくβ-アミラーゼの活性部位ループの機能解析2011

    • Author(s)
      三上文三, 他3名
    • Organizer
      2011年度農芸化学会大会
    • Place of Presentation
      京都女子大学
    • Year and Date
      2011-03-26
    • Related Report
      2011 Final Research Report
  • [Presentation] 結晶構造に基づいたアミラーゼの触媒機能の解明2010

    • Author(s)
      三上文三
    • Organizer
      第11回関西グライコサイエンスフォーラム
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2010-05-15
    • Related Report
      2011 Final Research Report
  • [Presentation] 結晶構造に基づいたアミラーゼの触媒機能の解明2010

    • Author(s)
      三上文三
    • Organizer
      第11回関西グライコサイエンスフォーラム
    • Place of Presentation
      大阪市立大学学術情報総合センター
    • Year and Date
      2010-05-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] ダイズβ-アミラーゼのフレキシブルループ変異体の結晶構造2010

    • Author(s)
      三上文三, 他3名
    • Organizer
      2010年度農芸化学会大会
    • Place of Presentation
      東京大学
    • Year and Date
      2010-03-28
    • Related Report
      2011 Final Research Report
  • [Presentation] Protein-glutaminaseのX線結晶構造解析と作用機序の解明2009

    • Author(s)
      橋爪亮太, 他6名
    • Organizer
      第56回日本生化学会近畿支部例会
    • Place of Presentation
      大阪医科大学
    • Year and Date
      2009-07-18
    • Related Report
      2011 Final Research Report
  • [Presentation] Protein-glutaminase のX線結晶構造解析と作用機序の解明2009

    • Author(s)
      橋爪亮太, 他
    • Organizer
      生化学会近畿支部
    • Place of Presentation
      大阪府高槻市大阪医科大学
    • Year and Date
      2009-07-18
    • Related Report
      2009 Annual Research Report
  • [Book] 第4章2節グロブリンタンパク質2010

    • Author(s)
      三上文三、丸山伸之、内海成、大豆のすべて(喜多村啓介他編集)
    • Publisher
      サイエンスフォーラム
    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://www.structure.kais.kyoto-u.ac.jp/http://www.structure.kais.kyoto-u.ac.jp/http://www.structure.kais.kyoto-u.ac.jp/http://www.structure.kais.kyoto-u.ac.jp/http://www.structure.kais.kyoto-u.ac.jp/

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://www.structure.kais.kyoto-u.ac.jp/

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.structure.kais.kyoto-u.ac.jp/

    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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