2HAN

Structural basis of heterodimeric ecdysteroid receptor interaction with natural response element hsp27 gene promoter


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Novel DNA-binding element within the C-terminal extension of the nuclear receptor DNA-binding domain.

Jakob, M.Kolodziejczyk, R.Orlowski, M.Krzywda, S.Kowalska, A.Dutko-Gwozdz, J.Gwozdz, T.Kochman, M.Jaskolski, M.Ozyhar, A.

(2007) Nucleic Acids Res 35: 2705-2718

  • DOI: 10.1093/nar/gkm162
  • Primary Citation of Related Structures:  
    2HAN

  • PubMed Abstract: 
  • The heterodimer of the ecdysone receptor (EcR) and ultraspiracle (Usp), members of the nuclear receptors superfamily, is considered as the functional receptor for ecdysteroids initiating molting and metamorphosis in insects. Here we report the 1.95 A structure of the complex formed by the DNA-binding domains (DBDs) the EcR and the Usp, bound to the natural pseudopalindromic response element ...

    The heterodimer of the ecdysone receptor (EcR) and ultraspiracle (Usp), members of the nuclear receptors superfamily, is considered as the functional receptor for ecdysteroids initiating molting and metamorphosis in insects. Here we report the 1.95 A structure of the complex formed by the DNA-binding domains (DBDs) the EcR and the Usp, bound to the natural pseudopalindromic response element. Comparison of the structure with that obtained previously, using an idealized response element, shows how the EcRDBD, which has been previously reported to possess extraordinary flexibility, accommodates DNA-induced structural changes. Part of the C-terminal extension (CTE) of the EcRDBD folds into an alpha-helix whose location in the minor groove does not match any of the locations previously observed for nuclear receptors. Mutational analyses suggest that the alpha-helix is a component of EcR-box, a novel element indispensable for DNA-binding and located within the nuclear receptor CTE. This element seems to be a general feature of all known EcRs.


    Organizational Affiliation

    Department of Biochemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, 50-370 Wrocław, Poland.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein ultraspiracleC [auth A]93Drosophila melanogasterMutation(s): 0 
Gene Names: uspCf1NR2B4CG4380
UniProt
Find proteins for P20153 (Drosophila melanogaster)
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Go to UniProtKB:  P20153
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Ecdysone receptorD [auth B]119Drosophila melanogasterMutation(s): 0 
Gene Names: EcRNR1H1CG1765
UniProt
Find proteins for P34021 (Drosophila melanogaster)
Explore P34021 
Go to UniProtKB:  P34021
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*CP*AP*AP*GP*GP*GP*TP*TP*CP*AP*AP*TP*GP*CP*AP*CP*TP*TP*GP*T)-3'A [auth C]20N/A
    Protein Feature View
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    • Reference Sequence
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      5'-D(*GP*AP*CP*AP*AP*GP*TP*GP*CP*AP*TP*TP*GP*AP*AP*CP*CP*CP*TP*T)-3'B [auth D]20N/A
      Protein Feature View
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      • Reference Sequence
      Small Molecules
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 1.95 Å
      • R-Value Free: 0.217 
      • R-Value Work: 0.180 
      • R-Value Observed: 0.182 
      • Space Group: P 1 21 1
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 46.716α = 90
      b = 59.79β = 106.7
      c = 65.179γ = 90
      Software Package:
      Software NamePurpose
      REFMACrefinement
      MAR345data collection
      SCALEPACKdata scaling
      EPMRphasing

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2007-05-22
        Type: Initial release
      • Version 1.1: 2008-05-01
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance
      • Version 1.3: 2017-10-18
        Changes: Advisory, Refinement description