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  • Having it both ways: transcription factors that bind DNA and RNA
  • Cassiday LA; Maher LJ 3rd
  • Nucleic Acids Res 2002[Oct]; 30 (19): 4118-26
  • Multifunctional proteins challenge the conventional 'one protein-one function' paradigm. Here we note apparent multifunctional proteins with nucleic acid partners, tabulating eight examples. We then focus on eight additional cases of transcription factors that bind double-stranded DNA with sequence specificity, but that also appear to lead alternative lives as RNA-binding proteins. Exemplified by the prototypic Xenopus TFIIIA protein, and more recently by mammalian p53, this list of transcription factors includes WT-1, TRA-1, bicoid, the bacterial sigma(70) subunit, STAT1 and TLS/FUS. The existence of transcription factors that bind both DNA and RNA provides an interesting puzzle. Little is known concerning the biological roles of these alternative protein-nucleic acid interactions, and even less is known concerning the structural basis for dual nucleic acid specificity. We discuss how these natural examples have motivated us to identify artificial RNA sequences that competitively inhibit a DNA-binding transcription factor not known to have a natural RNA partner. The identification of such RNAs raises the possibility that RNA binding by DNA-binding proteins is more common than currently appreciated.
  • |Animals[MESH]
  • |Base Sequence[MESH]
  • |DNA-Binding Proteins/chemistry/metabolism[MESH]
  • |DNA/*metabolism[MESH]
  • |Homeodomain Proteins/chemistry/metabolism[MESH]
  • |Humans[MESH]
  • |Models, Molecular[MESH]
  • |Molecular Sequence Data[MESH]
  • |Protein Binding[MESH]
  • |RNA/*metabolism[MESH]
  • |STAT1 Transcription Factor[MESH]
  • |Trans-Activators/chemistry/metabolism[MESH]
  • |Transcription Factor TFIIIA/chemistry/metabolism[MESH]
  • |Transcription Factors/chemistry/*metabolism[MESH]
  • |Tumor Suppressor Protein p53/chemistry/metabolism[MESH]





  • *{{pmid12364590}}
    *<b>[http://www.kidney.de/mlpefetch.php?search=12364590 Having it both ways: transcription factors that bind DNA and RNA ]</b> Nucleic Acids Res 2002; 30(19) ; 4118-26 Cassiday LA; Maher LJ 3rd

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    Nucleic Acids Res

    4118 19.30 2002