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 1.4 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: https://doi.org/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. 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

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Protein ultraspiracleC [auth A]93Drosophila melanogasterMutation(s): 0 
Gene Names: uspCf1NR2B4
UniProt
Find proteins for P20153 (Drosophila melanogaster)
Explore P20153 
Go to UniProtKB:  P20153
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20153
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Ecdysone receptorD [auth B]119Drosophila melanogasterMutation(s): 0 
Gene Names: EcRNR1H1
UniProt
Find proteins for P34021 (Drosophila melanogaster)
Explore P34021 
Go to UniProtKB:  P34021
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP34021
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
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
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
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
Sequence Annotations
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  • Reference Sequence
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

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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
  • Version 1.4: 2023-08-30
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description