Molecular structure of the transposable element ninja in Drosophila simulans

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Genetically unstable DNA sequences of 16.1 kb in length were isolated from the <i>white</i> locus of the <i>w</i> <sup>mky</sup> strain of <i>Drosophila simulans</i>. This insertional DNA has some unique characteristics as a transposon. It is found in high numbers in this strain and its revertant strains <i>w</i> <sup>psm1</sup> and <i>w</i><sup>cho</sup>, but not elsewhere, and the sequence is a tandem triplication of a basic repeating unit. In order to determine the structure of the insert as whole and the functional unit as a transposon, we analyzed nine clones isolated from genomic libraries of <i>w</i><sup>psm1</sup> and <i>w</i> <sup>cho</sup>. The repeating unit of the 16.1 kb insertion was the retrotransposon <i>ninja</i> and the DNA sequence of the entire element was determined. The <i>ninja</i> transposon is 6644 bp in length, with a 316 bp long terminal repeat (LTR) on each end. It contains two openreading frames (ORFs), and the <i>pol</i> region is divided between the two ORFs in contrast the organization of other retrotransposons. An alignment analysis of the reverse transcriptase sequences suggested that the <i>ninja</i> element is the first <i>Drosophila </i>retrotransposon belonging to the <i>Pao</i> subgroup.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 71(1), 1-8, 1996-02

    The Genetics Society of Japan

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各種コード

  • NII論文ID(NAID)
    10003759424
  • NII書誌ID(NCID)
    AA11077421
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13417568
  • NDL 記事登録ID
    4163699
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z53-W539
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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