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1995 Fiscal Year Final Research Report Summary

Recognition mechanism of the RNA segments of influenza virus by the NS2 protein at the virion assembly step.

Research Project

Project/Area Number 06670335
Research Category

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

Allocation TypeSingle-year Grants
Research Field Virology
Research InstitutionJichi Medical School

Principal Investigator

ODAGIRI Takato  Jichi Med.Sch., Lecturer, 医学部, 講師 (80177237)

Co-Investigator(Kenkyū-buntansha) TASHIRO Masato  National Institute of Health of Japan, Director., ウイルス第1, 部長 (90111343)
TANAKA Toshinori  Jichi Med.Sch., Lecturer, 医学部, 講師 (30146154)
Project Period (FY) 1994 – 1995
Keywordsinfluenza virus / DI virus / DI-RNA / virion assembly / packaging of RNA / RNA transfection / NS2 protein
Research Abstract

In the present research using NS2 mutant of influenza virus that produces a large amount of DI particles, we have studied (1) whether genomic RNA packaging into virion is suppressed by DI-RNA species, (2) whether there is a signal sequence which can recognize each RNA segment ; and (3) what is the function of NS2 protein during assembly of genome RNA segments.
We found (1) that PA DI-RNA species selectively suppressed the incorporation of only the progenitor PA gene, (2) that 7 and 3 nucleotides at the 3' and 5' terminal ends, respectively, in the segment-specific noncoding regions functioned as the recognition signals of each RNA segment, and (3) that NS2 protein down-regulated the DI-RNA packaging, resulting in preferential incorporation of normal genomic RNAs.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] T.Odagiri: "An amino acid change in the nonstructural NS2 protein" J.Gen.Virol.75. 43-53 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Odagiri: "Reversed misreading of a GC doublet by the modified T7" Virus Genes. 8. 271-274 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小田切 孝人: "インフルエンザウイルス干渉性欠損(DI)粒子の出現における" 東北のコロニー. 29. 27-38 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小田切 孝人: "インフルエンザウイルスのノゲム構造と機能" 蛋白質・核酸・酵素. 37. 1279-1285 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Odagiri: "An amino acid change in the nonstructural NS2 protein of an influenza A virus mutant is responsible for the generation of defective interfering (DI) particles by amplifying DI RNAs and suppressing complementary RNA synthesis." J.Gen.Virol.75. 43-53 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Odagiri: "Reversed misreading of a GC doublet by the modified T7 DNA polymerase, Sequenase." Virus Genes. 8. 271-274 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Odagiri: "The role of the NS2 protein of influenza virus during the production of DI virus particles." Tohoku Colony. 29. 27-38 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Odagiri: "The structure and function of influenza virus genome RNAs." Protein, Nucleic acid and Enzyme. 37. 1279-1285 (1992)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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