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How proteins recognize the TATA box

Z S Juo1, T K Chiu, P M Leiberman

  • 1Molecular Biology Institute, University of California at Los Angeles 90095, USA.

Journal of Molecular Biology
|August 16, 1996
PubMed
Summary
This summary is machine-generated.

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The human TATA-binding protein (TBP) complexed with TATA DNA reveals specificity through a DNA-centric view. This perspective explains TATA box sequence requirements and TBP binding.

Area of Science:

  • Structural Biology
  • Molecular Biology
  • Genetics

Background:

  • The TATA-binding protein (TBP) is a crucial transcription factor that recognizes the TATA box DNA sequence.
  • Previous studies analyzed TBP/DNA complexes from yeast (Saccharomyces cerevisiae) and plants (Arabidopsis thaliana).
  • Understanding TATA box specificity is key to deciphering gene regulation.

Purpose of the Study:

  • To determine the crystal structure of the human TBP/TATA DNA complex.
  • To elucidate the molecular basis of TATA box recognition and specificity by human TBP.
  • To provide a DNA-centric perspective on TBP-DNA interactions.

Main Methods:

  • X-ray crystallography was employed to solve the structure of the human TBP/TATA DNA complex.
  • Comparative analysis with existing TBP/DNA structures from other organisms was performed.

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Main Results:

  • The crystal structure of the human TBP/TATA DNA complex was successfully determined.
  • Viewing the complex as a DNA duplex with a large minor groove ligand explained TATA box specificity.
  • This model accounts for the preference for T.A over C.G base pairs, the need for T-A alternations, TBP's recognition of TATA box ends, and the variability in the latter half of the sequence.

Conclusions:

  • The DNA-centric view offers novel insights into TBP-TATA box recognition.
  • Structural data explains the precise sequence requirements for TBP binding.
  • This understanding is fundamental for gene transcription regulation research.