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Study on the Determination Mechanism of Flagellar Number in Bacterial Cell.

Research Project

Project/Area Number 03454001
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 遺伝学
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

KUTSUKAKE Kazuhiro  Hiroshima University, Faculty of Applied Biological Science, Ass. Prof., 生物生産学部, 助教授 (90143362)

Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 1992: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1991: ¥4,800,000 (Direct Cost: ¥4,800,000)
KeywordsBacterial Flagella / Cell Division / Anti-sigma Factor / Feedback Control / Transcriptional Regulation / Nucleoid Protein / 蛋白質輸送 / 鞭毛レギュロン
Research Abstract

During bacterial cell division cycle, various biosynthetic processes proceed under spatial and temporal controls and two daughter cells with the same structures are finally produced. Flagella can be considered as one of the most suitable systems to study genetic control of duplication of cellular constituents. Cytological study of Salmonella typhimurium indicated that the duplication of flagellar number occurs at the specific stage, the end of cell elongation period. However, it was found that, in the strains defective in the gene for anti-sigma factor specific for flagellar regulon, de novo synthesis of flagella occurs throughout cell elongation period. This result indicates that a negative feedback control exerted by the anti-sigma factor plays an important role in duplication process of flagellar number. As the cell elongates, the cell volume increases and the intracellular concentration of anti-sigma factor decreases, which allows the flagellar regulon expressed and results in initiation of de novo synthesis of flagella. The flhDC operon is known as an initiation operon of flagellar regulon. Transcriptional analysis of this operon revealed that its efficient expression is dependent on a nucleoid protein, H-NS. H-NS has been shown to modulate the supercoiling structure of bacterial chromosome. Because dynamic change of the topology of chromosome during DNA replication process can influence the association of H-NS with specific DNA regions, the expression of flagellar regulon and thus the synthesis of flagella may be regulated by DNA replication process through interaction of DNA with H-NS.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Ohnishi,K.: "A novel transcriptional regulation mechanism in the flagellar regulon of Salmonella typhimurium;an antisigma factor inhibits the activity of the flagellumapecific sigma factor." Molecular Microbiology. 6. 3149-3157 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ide,N.: "Search for promoter sequences chich can be activated by FliA,the flagellum-specific sigma factor in Escherichia coli." Jap.J.Genet. (Abstract). 67. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Iyoda,S.: "Anti-sigma factor binding domain of FliA,an alternative sigma factor specific for flagellar regulon of Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kutsukake,K.: "Activation of the flagellar regulon by a nucleoid protein,H-NS,in Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Minamino,T.: "Sequence analysis of the flhBA operon of Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Okada,T.: "Structure and function of the DNA region adjacent to the gene for anti-sigma factor in Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ohnishi,K.,Kutsukake,K.,Suzuki,H.,Iino,T.: "A novel transcriptional regulation mechanism in the flagellar regulon of Salmonella typhimurium: an anti-sigma factor inhibits the activity of the flagellum-specific sigma factor." Mol.Microbiol. 6. 3149-3157 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ide,N.,Kutsukake,K.: "Search for promoter sequences which can be activated by FliA, the flagellum-specific sigma factor in Escherichia coli." Jap.J.Genet. 67. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Iyoda,S.,Kutsukake,K.: "Anti-sigma factor binding domain of FliA, an alternative sigma factor specific for flagellar regulon of Salmonella typhimurium." Jap.J.Genet. 67. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kutsukake,K.: "Activation of the flagellar regulon by a nucleoid protein, H-NS, in Salmonella typhimurium." Jap.J.Genet. 67. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Minamino,T.,Kutsukake,K.: "Sequence analysis of the flhBA operon of Salmonella typhimurium." Jap.J.Genet. 67. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Okada,T.,Kutsukake,K.: "Structure and function of the DNA region adjacent to the gene for anti-sigma factor in Salmonella typhimurium." Jap.J.Genet. 67. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ohmishi,K.: "A novel transcriptional regulation mechanism in the flagellar regulon of Salmonella typhimurium;an antisigma factor inhibits the activity of the flagellumspecific sigma factor." Molecular Microbiology. 6. 3149-3157 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ide,N.: "Search for promoter sequences chich can be activated by FliA,the flagellum-specific sigma factor in Escherichia coli." Jap.J.Genet.(Abstract). 67. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Iyoda,S.: "Anti-sigma factor binding domain of FliA,an alternative sigma factor specific for flagellar regulon of Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kutsukake,K.: "Activation of the flagellar regulon by a nucleoid protein,H-NS,in Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Minamino,T.: "Sequence analysis of the flhBA operon of Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Okada,T.: "Structure and function of the DNA region adjacent to the gene for anti-sigma factor in Salmonella typhimurium." Jap.J.Genet. (Abstract). 67. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ohnishi,K.: "A novel transcriptional regulation mechanism in the flagellar regulon of Salmonella typhimurium;an antiーsigma factor inhibits the activity of the flagellumーspecific sigma factor." Molecular Microbiology.

    • Related Report
      1991 Annual Research Report
  • [Publications] 沓掛 和弘: "ゲノム再編成による細菌遺伝子の発現調節" 細胞工学. 10. S6-S21 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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