2HAP

STRUCTURE OF A HAP1-18/DNA COMPLEX REVEALS THAT PROTEIN/DNA INTERACTIONS CAN HAVE DIRECT ALLOSTERIC EFFECTS ON TRANSCRIPTIONAL ACTIVATION

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.248 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structure of HAP1-18-DNA implicates direct allosteric effect of protein-DNA interactions on transcriptional activation.

King, D.A., Zhang, L., Guarente, L., Marmorstein, R.

(1999) Nat Struct Biol 6: 22-27

  • DOI: 10.1038/4893
  • Primary Citation of Related Structures:  
    2HAP

  • PubMed Abstract: 

    • HAP1 is a yeast transcriptional activator that binds with equal affinity to the dissimilar upstream activation sequences UAS1 and UAS(CYC7), but activates transcription differentially when bound to each site. HAP1-18 harbors an amino acid change in t ...

    HAP1 is a yeast transcriptional activator that binds with equal affinity to the dissimilar upstream activation sequences UAS1 and UAS(CYC7), but activates transcription differentially when bound to each site. HAP1-18 harbors an amino acid change in the DNA binding domain. While binding UAS1 poorly, HAP1-18 binds UAS(CYC7) with wild-type properties and activates transcription at elevated levels relative to HAP1. We have determined the structure of HAP1-18-UAS(CYC7) and have compared it to HAP1-UAS(CYC7). Unexpectedly, the single amino acid substitution in HAP1-18 nucleates a significantly altered hydrogen bond interface between the protein and DNA resulting in DNA conformational changes and an ordering of one N-terminal arm of the protein dimer along the DNA minor groove. These observations, together with a large subset of transcriptionally defective mutations in the HAP1 DNA-binding domain that map to the HAP1-DNA interface, suggest that protein-DNA interactions may have direct allosteric effects on transcriptional activation.

    Organizational Affiliation: 

    The Wistar Institute and The Department of Chemistry, University of Pennsylvania, Philadelphia 19104, USA.



Macromolecules

Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (HEME ACTIVATOR PROTEIN)C, D81Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: HAP1, CYP1
Find proteins for P0CS82 (Saccharomyces cerevisiae)
Explore P0CS82 
Go to UniProtKB:  P0CS82
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*AP*CP*GP*CP*TP*AP*TP*TP*AP*TP*CP*GP*CP*TP*AP*TP*TP*AP*GP*T)-3')A20N/A
    • Find similar nucleic acids by:  Sequence   |   Structure
      • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      DNA (5'-D(*AP*CP*TP*AP*AP*TP*AP*GP*CP*GP*AP*TP*AP*AP*TP*AP*GP*CP*GP*T)-3')B20N/A
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.50 Å
      • R-Value Free: 0.302 
      • R-Value Work: 0.248 
      • R-Value Observed: 0.248 
      • Space Group: P 41 21 2
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 92.5α = 90
      b = 92.5β = 90
      c = 86.5γ = 90
      Software Package:
      Software NamePurpose
      PHASESphasing
      CCP4model building
      X-PLORrefinement
      XDSdata reduction
      XSCALEdata scaling
      CCP4phasing

      Structure Validation

      View Full Validation Report


      View more in-depth experimental data

      Entry History 

      Deposition Data

      Revision History 

      • Version 1.0: 1999-11-10
        Type: Initial release
      • Version 1.1: 2008-05-22
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance
      • Version 1.3: 2011-11-16
        Changes: Atomic model