Three new nuclear genes, <i>sigD</i>, <i>sigE</i> and <i>sigF</i>, encoding putative plastid RNA polymerase σ factors in <i>Arabidopsis thaliana</i>

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公開日
2000-09-06
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1016/s0014-5793(00)01965-7
公開者
Wiley

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説明

<jats:p>Three new nuclear genes (<jats:italic>sigD</jats:italic>, <jats:italic>sigE</jats:italic> and <jats:italic>sigF</jats:italic>) of <jats:italic>Arabidopsis thaliana</jats:italic>, encoding putative plastid RNA polymerase σ factors, were identified and analyzed. Phylogenetic analysis revealed that higher plant σ factors fell into at least four distinct subgroups within a diverse protein family. In addition, <jats:italic>Arabidopsis sig</jats:italic> genes contained conserved chromosomal intron sites, indicating that these genes arose by DNA duplication events during plant evolution. Transcript analyses revealed two alternatively spliced transcripts generated from the <jats:italic>sigD</jats:italic> region, one of which is predicted to encode a σ protein lacking the carboxy‐terminal regions 3 and 4. Finally, the amino‐terminal sequence of the <jats:italic>sigF</jats:italic> gene product was shown to function as a plastid‐targeting signal using green fluorescent protein fusions.</jats:p>

収録刊行物

  • FEBS Letters

    FEBS Letters 481 (1), 47-52, 2000-09-06

    Wiley

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