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Why is lacticin Qa super-bacteriocin ?

Research Project

Project/Area Number 23658081
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Applied microbiology
Research InstitutionKyushu University

Principal Investigator

SONOMOTO Kenji  九州大学, 大学院・農学研究院, 教授 (10154717)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords乳酸菌 / バクテリオシン / ラクティシンQ / 選択的抗菌活性 / Huge Toroidal Poreモデル / 膜電位崩壊 / 細胞膜成分 / レセプター / 孔形成 / 脂質構成成分
Research Abstract

Lacticin Q, a lactococcal pore (Huge Toroidal Pore)-forming bacteriocin, shows activity toward Gram-positive bacteria but not Gram-negative bacteria. Lacticin Q did not induce permeability of the outer membrane of Gram-negative bacteria. Experiments using model membranes containing outer membrane components suggested that lacticin Q binds to the outer membrane of Gram-negative bacteria but isunable to penetrate it. The lack of activity of lacticin Q was attributed to physicochemical features of the outer membrane components.

Report

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

    (16 results)

All 2013 2012 2011 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (2 results) Book (4 results) Remarks (3 results)

  • [Journal Article] Bifunctional gene cluster, lnqBCDEF, mediates bacteriocin production and immunity with differential genetic requirements2013

    • Author(s)
      Shun Iwatani, Yuko Horikiri, Takeshi Zendo,Jiro Nakayama & Kenji Sonomoto
    • Journal Title

      Applied Enivironmental Microbiology

      Volume: 79 Issue: 7 Pages: 2446-2449

    • DOI

      10.1128/aem.03783-12

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Identification of the genes involved in the secretion and self-immunity of lacticin Q, an unmodified leaderless bacteriocin from Lactococcus lactis QU 52012

    • Author(s)
      Shun Iwatani et al.
    • Journal Title

      Microbiology

      Volume: 158 Issue: 12 Pages: 2927-2935

    • DOI

      10.1099/mic.0.062943-0

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Antibacterial Peptides “Bacteriocins”: An Overview of Their Diverse Characteristics and Applications2012

    • Author(s)
      Mami Nishie, Jun-ichi Nagao & Kenji Sonomoto
    • Journal Title

      Biocontrol Science

      Volume: 17 Issue: 1 Pages: 1-16

    • DOI

      10.4265/bio.17.1

    • NAID

      10030447756

    • ISSN
      1342-4815, 1884-0205
    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] New type non-lantibiotic bacteriocins : circular and leaderless bacteriocins2012

    • Author(s)
      Masuda Y., et al
    • Journal Title

      Beneficial Microbes

      Volume: 3 Issue: 1 Pages: 3-12

    • DOI

      10.3920/bm2011.0047

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Lacticin Q-mediated selective toxicity depending on physicochemical features of membrane components2011

    • Author(s)
      Yoneyama F., et al
    • Journal Title

      Antimicrobial Agents and Chemotherapy

      Volume: 55 Issue: 5 Pages: 2446-2450

    • DOI

      10.1128/aac.00808-10

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] 乳酸菌バクテリオシン-戦略的な探索・発見・活用とゼロエミッションPJまで-2011

    • Author(s)
      石橋直樹、善藤威史、園元謙二
    • Journal Title

      日本乳酸菌学会誌

      Volume: 22 Pages: 38-48

    • NAID

      10029752792

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 乳酸菌バクテリオシン-戦略的な探索・発見・活用とゼロエミッションPJまで-2011

    • Author(s)
      石橋直樹,善藤威史,園元謙二
    • Journal Title

      日本乳酸菌学会誌

      Volume: 22(1) Pages: 38-48

    • NAID

      10029752792

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] New Era of Lactic Acid Bacteria to Open the Future2012

    • Author(s)
      Kenji Sonomoto
    • Organizer
      The Young Scientist Seminar 2011 - Bioresources: Their Potentials & Applications
    • Place of Presentation
      Bangkok, Thailand
    • Year and Date
      2012-01-31
    • Related Report
      2012 Final Research Report
  • [Presentation] New Era of Lactic Acid Bacteria to Open the Future2012

    • Author(s)
      Kenji Sonomoto
    • Organizer
      The Young Scientist Seminar 2011 - Bioresources: Their Potentials & Applications(招待講演)
    • Place of Presentation
      Bangkok, Thailand
    • Related Report
      2011 Research-status Report
  • [Book] 新しい乳酸菌の機能と応用2013

    • Author(s)
      澤 稔彦、善藤威史、園元謙二
    • Total Pages
      224
    • Publisher
      シーエムシー出版
    • Related Report
      2012 Final Research Report
  • [Book] 新しい乳酸菌の機能と応用2013

    • Author(s)
      澤 稔彦ら
    • Publisher
      シーエムシー出版
    • Related Report
      2012 Annual Research Report
  • [Book] LacticAcid Bacteria and Bifidobacteria: Current Progress in Advanced Research2011

    • Author(s)
      Kenji Sonomoto& Atsushi Yokota
    • Total Pages
      286
    • Publisher
      Caister Academic Press
    • Related Report
      2012 Final Research Report
  • [Book] Lactic Acid Bacteria and Bifidobacteria: Current Progress in Advanced Research2011

    • Author(s)
      Kenji Sonomoto & Atsushi Yokota
    • Total Pages
      286
    • Publisher
      Caister Academic Press
    • Related Report
      2011 Research-status Report
  • [Remarks]

    • URL

      http://www.agr.kyushu-u.ac.jp/lab/microbt/

    • Related Report
      2012 Final Research Report
  • [Remarks] 九州大学大学院農学研究院生命機能科学部門分子微生物学・バイオマス資源化学講座微生物工学分野

    • URL

      http://www.agr.kyushu-u.ac.jp/lab/microbt/

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.agr.kyushu-u.ac.jp/lab/microbt/

    • Related Report
      2011 Research-status Report

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

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