DNA Recognition by Eucaryotic Transcription Factors


  • Homeodomains that have closely related sequences bind with comparable affinity to the same DNA sequence in vitro
  • How do functionally different homeodomain proteins achieve the necessary selectivity and specificity when their DNA binding region are virtually identical?
  • - In vivo specificity of homeodomain transcription factors
      depends on interactions with other proteins.
    - form heterodimer
     

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