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Analysis of antimicrobial mechanism and self resistance of bacteriocin Bac41 produced by Enterococcus faecalis clinical isolate.

Research Project

Project/Area Number 25870116
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Bacteriology (including mycology)
Functional biochemistry
Research InstitutionGunma University

Principal Investigator

KURUSHIMA Jun  群馬大学, 医学(系)研究科(研究院), 助教 (50636488)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords腸球菌 / 溶菌酵素 / 細胞壁 / 細胞分裂 / プラスミド / Enterococcus faecalis / ペプチドグリカン / 臨床分離株 / 質量分析 / 蛍光イメージング / 細菌間相互作用 / バクテリオシン / 抗菌タンパク質 / ペプチドグリカン分解酵素
Outline of Final Research Achievements

We investigated the molecular mechanism underlying the bacteriolytic activity of bacteriocin Bac41 that is produced by Enterococcus faecalis clinical isolate. BacL1 protein, which is an essential secreted component of Bac41, showed a cell wall degrading activity against E. faecalis peptidoglycan, and binds to cell dividing-associated region of the target E. faecalis cell surface to lead bacteriolysis. By contrast, neither the binding of BacL1 nor the bacteriolysis was observed in the static E. faecalis cells. The binding of BacL1 was specifically detected in L-Ala-L-Ala crossbridged peptidoglycan but not in peptidoglycan with other crossbridge structure, potentially explaining narrow antimicrobial spectrum of Bac41.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (11 results)

All 2015 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (9 results)

  • [Journal Article] Bacteriocin Protein BacL1 of Enterococcus faecalis Targets CelDivision Loci and Specifically Recognizes L-Ala2-Cross-Bridged Peptidoglycan2015

    • Author(s)
      Jun Kurushima, Daisuke Nakane, Takayuki Nishizaka, Haruyoshi Tomitaa
    • Journal Title

      Juornal of Bacteriology

      Volume: 197 Issue: 2 Pages: 286-295

    • DOI

      10.1128/jb.02203-14

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Bacteriocin Protein BacL1 of Enterococcus faecalis Is a Peptidoglycan D-Isoglutamyl-L-lysine Endopeptidase2013

    • Author(s)
      Jun Kurushima, Ikue Hayashi, Motoyuki Sugai, and Haruyoshi Tomita
    • Journal Title

      The Journal of Biological Chemistry

      Volume: 288 Issue: 52 Pages: 36915-36925

    • DOI

      10.1074/jbc.m113.506618

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 臨床分離Enterococcus faecalisが産生する溶菌タンパク質BacL1の特異的ターゲッティング2015

    • Author(s)
      久留島潤, 中根大介, 野村隆浩, 西坂崇之, 富田治芳
    • Organizer
      第88回日本細菌学会
    • Place of Presentation
      長良川国際会議場(岐阜県岐阜市)
    • Year and Date
      2015-03-26 – 2015-03-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 腸球菌バクテリオシンBacL1の細胞壁ターゲッティング2014

    • Author(s)
      久留島潤, 中根大介, 西坂崇之, 富田治芳
    • Organizer
      第8回細菌学若手コロッセウム
    • Place of Presentation
      ホテルニセコいこいの村(北海道虻田郡)
    • Year and Date
      2014-08-06 – 2014-08-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] 腸球菌Enterococcus faecalisか産生するバクテリオシンタンパク質BacL1の細胞壁ターゲッティング2014

    • Author(s)
      久留島潤, 富田治芳
    • Organizer
      第46回レンサ球菌研究会
    • Place of Presentation
      東京大学農学部弥生キャンパス(東京都文京区)
    • Year and Date
      2014-06-27 – 2014-06-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] Functional analysis of bacteriocin Bac41 produced by Enterococcus faecalis.2014

    • Author(s)
      Jun Kurushima, Ikue Hayashi, Daisuke Nakane, Takayuki Nishizaka, Motoyuki Sugai, Haruyoshi Tomita
    • Organizer
      4th ASM Conference on Enterococci
    • Place of Presentation
      Cartagena, Colombia
    • Related Report
      2013 Research-status Report
  • [Presentation] 腸球菌バクテリオシン Bac41 による殺菌メカニズムの解析2014

    • Author(s)
      久留島潤、林幾江、中根大介、西坂崇之、菅井基行、富田治芳
    • Organizer
      第87回日本細菌学会総会
    • Place of Presentation
      タワーホール船堀(東京都江戸川区)
    • Related Report
      2013 Research-status Report
  • [Presentation] 腸球菌Enterococcus faecalisが産生するバクテリオシンBac41の機能解析2013

    • Author(s)
      久留島潤、富田治芳
    • Organizer
      第45回レンサ球菌研究会
    • Place of Presentation
      ホテル島根イン青山(東京都港区)
    • Related Report
      2013 Research-status Report
  • [Presentation] 腸球菌バクテリオシンBac41の機能解析2013

    • Author(s)
      久留島潤
    • Organizer
      第7回細菌学若手コロッセウム
    • Place of Presentation
      広島エアポートホテル(広島県三原市)
    • Related Report
      2013 Research-status Report
  • [Presentation] Functional analysis of bacteriocin Bac41 produced by Enterococcus faecalis clinical isolates2013

    • Author(s)
      Jun Kurushima, Haruyoshi Tomita
    • Organizer
      The 12th Awaji International Forum on Infection and Immunity
    • Place of Presentation
      淡路夢舞台国際会議場(兵庫県淡路市)
    • Related Report
      2013 Research-status Report
  • [Presentation] 腸球菌バクテリオシンBac41による殺菌メカニズムの解析2013

    • Author(s)
      久留島潤、富田治芳
    • Organizer
      第96回日本細菌学会関東支部総会
    • Place of Presentation
      東京ドームホテル(東京都文京区)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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