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Genetic analysis of pleiotropic mutation independent of A factor derived from Streptomyces griseus

Research Project

Project/Area Number 03454032
Research Category

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

Allocation TypeSingle-year Grants
Research Field 発酵工学
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

NIMI Osamu  Hiroshima Univ., Fac. Engin., Professor, 工学部, 教授 (60034360)

Co-Investigator(Kenkyū-buntansha) SHINKAWA Hidenori  Hiroshima Univ., Fac. Engin., Research Associate, 工学部, 助手 (50226338)
KINASHI Haruyasu  Hiroshima Univ., Fac. Engin., Associate Professor, 工学部, 助教授 (80224997)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1992: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1991: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsStreptomyces / Pleiotropic Mutation / Streptomyces griseus / Sigma Factor / hrdB / RNA Polymerase / プロモ-タ-結合蛋白
Research Abstract

In order to clue a control mechanism of gene expression in secondary metabolism, RNA polymerase activity and sigma factor were determined in pleiotropic mutant derived from Streptomyces griseus. Results obtained are as follow
1. RNA polymerase were purified in both parent and pleiotropic mutant. In vitro transcriptional activities using both principal and secondary metabolic gene as template were determined. RNA polymerase from mutant possessed no activity transcribing secondary metabolic gene, suggesting that a sigma factor was unusual or lack in the mutant.
2. A protein binding to promoter region on strB gene which contributed to streptomycin biosynthesis was screened. A binding protein attached to promoter gene was foud, but the protein was non specific for pleiotropic mutant.
3. A sigma factor in S. griseus was screened. Gene hrdB of S. coelicolor A3(2) was used as probe for both colony and Southern hybridization experiment. A clone houvouring pCE8 was hybridized strongly to the probe DNA.
4. Nucleotide sequences of pCE8 was determined. A ORF(1335bp) was found in the sequence. The ORF contained 36bp rpoB box, which was preserved nucleotide sequence in gene of several sigma factor. DNA homology of hrdB to pCE8 was 86.3%.
5. The sigma like protein derived from pCE8 were determined in several phase of growth in streptomyces mycelium, using Northern bloting method. The protein was recognized in all phases in myceliul growth. These result revealed that the protein from pCE8 was not secondary metabolic factor but principal one and suggested the presence of another sigma factor concerning secondary metabolism in Streptomyces.

Report

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

    (8 results)

All Other

All Publications (8 results)

  • [Publications] H.Sginkawa,M.Sugiyama Y.Hatada,T.Ohucgi M.Udagawa & O.Nimi: "Silence of Streptomycin 6-phosphotransferase gene Derived by Incubation at a High Temperature in Streptomyces griseus." Biotechnology Letters. 13. 537-542 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Shinkawa,Y.Hatada S.Iwai,T.Ohuchi & O.Nimi: "Characterization of Pleiotropic(bld)Mutant Derived from Streptomyces griseus." submitted to J.Gen.Microbiol.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Hatada,H.Shinkawa M.Okada,H.Kinashi & O.Nimi: "Nucleotide Sequence of a Principal Sigma Facter Gene from Streptomyces griseus." submitted to Gene.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Shinkawa et al.: "Silence of Streptomycin 6-phosphotransferase gene Derived by Incubation at a High Temperature in Streptomyces griseus." Biotechnology Letter. 13. 537-542 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Shinkawa et al.: "Characterization of Pleiotropic (bld) Mutant Derived from Streptomyces griseus." J. Gen. Microbiol.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Hatada et al.: "Nucleotide sequence of a Principal Sigma Factor Gene from Streptomyces griseus." Gene.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Shinkawa,M.Sugiyama Y.Hatada,T.Ohuchi M.Udagawa & O.Nimi: "Silence of Streptomycin 6-Phosphotransferase Gene Derived by Incubation at a High Temperature in Streptomyces griseus" Biotechnology Letters. 13. 537-542 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Shinkawa,M.Sugiyama,Y.Hatada,T.Ohuchi,M.Udagawa,O.Nimi: "Silence of Streptomycin 6ーPhosphotransferase Gene Derived by Incubation at a High Temperature in S.griseus" Biotechnology Letters. 13. 537-542 (1991)

    • Related Report
      1991 Annual Research Report

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

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