1KB4

Crystal Structure of VDR DNA-binding Domain Bound to a Canonical Direct Repeat with Three Base Pair Spacer (DR3) Response Element


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of VDR-DNA interactions on direct repeat response elements.

Shaffer, P.L.Gewirth, D.T.

(2002) EMBO J 21: 2242-2252

  • DOI: 10.1093/emboj/21.9.2242
  • Primary Citation of Related Structures:  
    1KB6, 1KB4, 1KB2

  • PubMed Abstract: 
  • The vitamin D receptor (VDR) forms homo- or heterodimers on response elements composed of two hexameric half-sites separated by 3 bp of spacer DNA. We describe here the crystal structures at 2.7-2.8 A resolution of the VDR DNA-binding region (DBD) in ...

    The vitamin D receptor (VDR) forms homo- or heterodimers on response elements composed of two hexameric half-sites separated by 3 bp of spacer DNA. We describe here the crystal structures at 2.7-2.8 A resolution of the VDR DNA-binding region (DBD) in complex with response elements from three different promoters: osteopontin (SPP), canonical DR3 and osteocalcin (OC). These structures reveal the chemical basis for the increased affinity of VDR for the SPP response element, and for the poor stability of the VDR-OC complex, relative to the canonical DR3 response element. The homodimeric protein-protein interface is stabilized by van der Waals interactions and is predominantly non-polar. An extensive alpha-helix at the C-terminal end of the VDR DBD resembles that found in the thyroid hormone receptor (TR), and suggests a mechanism by which VDR and TR discriminate among response elements. Selective structure-based mutations in the asymmetric homodimeric interface result in a VDR DBD protein that is defective in homodimerization but now forms heterodimers with the 9-cis retinoic acid receptor (RXR) DBD.


    Organizational Affiliation

    Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Vitamin D3 ReceptorAB110Homo sapiensMutation(s): 0 
Gene Names: VDRNR1I1
Find proteins for P11473 (Homo sapiens)
Explore P11473 
Go to UniProtKB:  P11473
NIH Common Fund Data Resources
PHAROS  P11473
Protein Feature View
Expand
  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*CP*AP*CP*AP*GP*GP*TP*CP*AP*CP*GP*AP*AP*GP*GP*TP*CP*A)-3'C18N/A
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      5'-D(*TP*GP*AP*CP*CP*TP*TP*CP*GP*TP*GP*AP*CP*CP*TP*GP*TP*G)-3'D18N/A
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.80 Å
      • R-Value Free: 0.272 
      • R-Value Work: 0.214 
      • Space Group: P 43 21 2
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 61.5α = 90
      b = 61.5β = 90
      c = 241.97γ = 90
      Software Package:
      Software NamePurpose
      CNSrefinement
      HKL-2000data reduction
      HKL-2000data scaling
      CNSphasing

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History 

      • Version 1.0: 2002-05-03
        Type: Initial release
      • Version 1.1: 2008-04-27
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance