Plastidic proteins containing motifs of nuclear transcription factors

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Plants are constantly exposed to environmental factors, including biotic and abiotic stresses, which may confer serious damage and affect survival. In order to cope with these stresses, plants have evolved a variety of defense systems. Despite intensive surveys, the molecular mechanisms are still not completely understood, and in particular, information on diversification of proteins is limited. In this article, we focus on examples of proteins changing both cellular localization and functions. Experimentally, six such proteins have so far been identified, all of them containing motifs of nuclear transcription factors, but localized in plastids: a 41-kDa protein from <i>Nicotiana tabacum</i> containing a zinc finger motif, shown to be a chloroplast nucleoid DNA binding protein (CND41); a plastid envelope DNA binding protein (PEND) from <i>Pisum sativum</i> possessing a basic domain plus leucine zipper motif; proteins designated as PD1 and PD3 also isolated from <i>P. sativum</i>, both having AT-hook motifs; a protein with a basic helix-loop-helix (bHLH) motif from <i>Arabidopsis thaliana</i> proposed to be a plastid transcription factor, and designated as PTF1; one wound-induced protein from <i>N. tabacum</i> (NtWIN4) shown to be a bHLH protein and exclusively localized into plastids. Judging from their structures, these proteins could have originated from eukaryotic ancestors. At the N-terminus, they possess clustered basic residues, which might constitute the key structure for conversion from nuclear transcription factors to plastid-resident proteins.

収録刊行物

  • Plant biotechnology  

    Plant biotechnology 24(2), 165-170, 2007-03-01 

    Japanese Society for Plant Cell and Molecular Biology

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各種コード

  • NII論文ID(NAID)
    10021910887
  • NII書誌ID(NCID)
    AA11250821
  • 本文言語コード
    ENG
  • 資料種別
    REV
  • ISSN
    13424580
  • NDL 記事登録ID
    8690293
  • NDL 雑誌分類
    ZR3(科学技術--生物学--植物)
  • NDL 請求記号
    Z54-J126
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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