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Studies on the enzyme that catalyzes D/L-isomerization of an amino acid during the post-translational modification of neuropeptide precursor.

Research Project

Project/Area Number 23570094
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Animal physiology/Animal behavior
Research InstitutionHiroshima University

Principal Investigator

MORISHITA Fumihiro  広島大学, 理学(系)研究科(研究院), 助教 (20210164)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords神経科学 / 生理活性物質 / 細胞培養 / 遺伝子導入 / アメフラシ / 神経ペプチド / D型アミノ酸 / 翻訳後修飾 / サブトラクション / 分子生物学
Research Abstract

NdWFamide (NdWFa) is a D-amino acid containing neuropeptide of the marine gastropod, Aplysia kurodai. In this study, we attempt to identify the peptidyl D/L-isomerase (PI) that catalyzes the D-/L-conversion of NdWFa in Aplysia. To this end, we prepared NdWFa-expressing neuron specific cDNAs by the subtraction method. When the cDNAs were cloned and sequenced, we found that several predicted proteins with N-terminal signal peptide could not be specified their functions by homology search on database. We currently assume that those proteins are candidates for the PI of Aplysia.
Then, we tried to establish NdWFa-expressing cell-line, because such cells could be used for the bioassay system for the candidate genes of the PI. Transformation of NdWFa-precursor gene to CHO-K1 cell seems to be successful. However, biosynthesis of the peptide could not be confirmed, so far. We may need fine-tuning of experimental conditions that leads to more effective expression of foreign gene.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (13 results)

All 2014 2013 2012 2011 Other

All Journal Article (7 results) (of which Peer Reviewed: 6 results) Presentation (5 results) Remarks (1 results)

  • [Journal Article] Characterization of precursor genes encoding D-tryptophan containing neuropeptide NdWFamide of sea hare Aplysia2014

    • Author(s)
      Morishita Fumihiro, Furukawa Yasuo, Matsushima Osamu
    • Journal Title

      Peptide Science

      Volume: 2013 Pages: 439-442

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of Precursor Genes Encoding D-Tryptophan Containing Neuropeptide NdWFamide of Sea Hare Aplysia2014

    • Author(s)
      Morishita, F., Furukawa, Y., Matsushima, O.,
    • Journal Title

      Peptide Science

      Volume: 2013 Pages: 439-442

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular cloning of two distinct precursor of NdWFamide, D-tryptophan-containing neuropeptide of the sea hare, Aplysia kurodai2012

    • Author(s)
      Morishita Fumihiro, Furukawa Yasuo, Matsushima Osamu
    • Journal Title

      Peptides

      Volume: 38 Pages: 291-301

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Molecular cloning of two distinct precursor genes of NdWFamide, a d-tryptophan-containing neuropeptide of the sea hare, Aplysia kurodai2012

    • Author(s)
      F. Morishita
    • Journal Title

      Peptides

      Volume: 38 Issue: 2 Pages: 291-301

    • DOI

      10.1016/j.peptides.2012.08.025

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] アメフラシのD型アミノ酸含有神経ペプチド2011

    • Author(s)
      森下文浩, 古川康雄, 松島治
    • Journal Title

      NdWFamide(比較生理生化学)

      Volume: 28

    • Related Report
      2013 Final Research Report
  • [Journal Article] Expression of Ans-d-Trp-Phe-NH2 in te brain of the terrestrial slug Limax valentianus2011

    • Author(s)
      Matsuo R, et al
    • Journal Title

      Comp Biochem Physiol B

      Volume: 160 Issue: 2-3 Pages: 89-93

    • DOI

      10.1016/j.cbpb.2011.06.007

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] アメフラシのD型アミノ酸含有神経ペプチド、NdWFamide2011

    • Author(s)
      森下文浩、古川康雄、松島 治
    • Journal Title

      比較生理生化学

      Volume: 28 Pages: 308-316

    • NAID

      10030754322

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] アメフラシのD型トリプトファン含有神経ペプチド(NdWFamide)の前駆体遺伝子クローニングと発現2013

    • Author(s)
      森下文浩, 古川康雄, 松島治
    • Organizer
      日本動物学会第84回岡山大会
    • Place of Presentation
      岡山市
    • Related Report
      2013 Final Research Report
  • [Presentation] Characterization of Precursor Genes Encoding D-Tryptophan Containing Neuropeptide NdWFamide of Sea Hare Aplysia2013

    • Author(s)
      Morishita, F., Furukawa, Y., Matsushima, O.,
    • Organizer
      4th Asia-Pacific International Peptide Symposium
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2013 Annual Research Report
  • [Presentation] Expression of two precursor genes of NdWFamide, a D-tryptophan containing neuropeptide, in the central ganglia of Aplysia kurodai2012

    • Author(s)
      Morishita Fumihiro, Furukawa Yasuo, Matushima Osamu
    • Organizer
      Neuroscience 2012
    • Place of Presentation
      New Orleans, U.S.A
    • Related Report
      2013 Final Research Report
  • [Presentation] 軟体動物の神経ペプチドをD型化する酵素の探索(予備的報告)2012

    • Author(s)
      森下文浩
    • Organizer
      日本動物学会中国四国支部徳島大会
    • Place of Presentation
      徳島市
    • Related Report
      2013 Final Research Report
  • [Presentation] 軟体動物の神経ペプチドをD型化する酵素の探索(予備的報告)2012

    • Author(s)
      森下文浩
    • Organizer
      社団法人 日本動物学会中国四国支部島根大会
    • Place of Presentation
      島根県松江市 島根大学
    • Related Report
      2012 Research-status Report
  • [Remarks] 研究内容:神経系における情報伝達機構に関する研究 (森下文浩)

    • URL

      http://home.hiroshima-u.ac.jp/~lmcp/index.php?%BF%B9%B2%BC%B6%C8%C0%D3

    • Related Report
      2013 Annual Research Report

URL: 

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

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