Mutation Spectrum Induced by Dihydropyrazines in Escherichia coli

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Dihydropyrazine (DHP), which induces mutagenesis in E. coli, was investigated. From analyzing mutations in the chromosomal rpoB gene, the mutation spectrum in uvrB strain revealed the different behavior on exposure to two DHP derivatives 3-hydro-2,2,5,6-tetramethylpyrazine (HTMP), and 2,3-dihydro-5,6-dimethylpyrazine (DHDMP). A higher level of DHP-induced mutation was observed, with base substitutions at G : C pairs predominant. HTMP and DHDMP increased the frequency of G : C to T : A transversions. HTMP increased the frequency of G : C to A : T transitions, than did DHDMP. These findings suggest that DHPs prefer to attack the G : C pair and that different DHP derivatives may prefer distinct mutagenic base pairs; and further, that nucleotide excision repair may be involved in the repair of DHP-induced mutations.

収録刊行物

  • Biological & pharmaceutical bulletin

    Biological & pharmaceutical bulletin 29(1), 17-20, 2006-01-01

    公益社団法人日本薬学会

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各種コード

  • NII論文ID(NAID)
    110005602075
  • NII書誌ID(NCID)
    AA10885497
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09186158
  • NDL 記事登録ID
    7755650
  • NDL 雑誌分類
    ZS51(科学技術--薬学)
  • NDL 請求記号
    Z53-V41
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  J-STAGE 
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