5B5B

Crystal structure of VDR-LBD complexed with 2-methylidene-26,27-diphenyl-19-nor-1,25-dihydroxyvitamin D3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Helix12-Stabilization Antagonist of Vitamin D Receptor

Kato, A.Itoh, T.Anami, Y.Egawa, D.Yamamoto, K.

(2016) Bioconjug.Chem. 27: 1750-1761

  • DOI: 10.1021/acs.bioconjchem.6b00246

  • PubMed Abstract: 
  • To develop strong vitamin D receptor (VDR) antagonists and reveal their antagonistic mechanism, we designed and synthesized vitamin D analogues with bulky side chains based on the "active antagonist" concept in which antagonist prevents helix 12 (H12 ...

    To develop strong vitamin D receptor (VDR) antagonists and reveal their antagonistic mechanism, we designed and synthesized vitamin D analogues with bulky side chains based on the "active antagonist" concept in which antagonist prevents helix 12 (H12) folding. Of the synthesized analogues, compounds 3a and 3b showed strong antagonistic activity. Dynamic hydrogen/deuterium exchange coupled with mass spectrometry (HDX-MS) and static X-ray crystal structure analyses indicated that compound 3a stabilizes H11-H12 but displaces H6-H7 so that 3a is a novel rather than "active" or "passive" type of antagonist. We classified 3a as a third type of antagonist and called it "H11-H12 stabilization antagonist". HDX-MS analysis indicated that antagonist 3b is an "active" antagonist. To date there are no reports relating to nuclear receptor antagonist that strongly stabilizes H12. In this study, we found first VDR antagonist that stabilizes H12 and we showed that antagonistic mechanism is diverse depending on each antagonist structure. Additionally, HDX-MS was proven to be very useful for investigations of protein structure alterations resulting from ligand binding.


    Organizational Affiliation

    Laboratory of Drug Design and Medicinal Chemistry, Showa Pharmaceutical University , 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vitamin D3 receptor
A, D
271Rattus norvegicusMutation(s): 0 
Gene Names: Vdr (Nr1i1)
Find proteins for P13053 (Rattus norvegicus)
Go to UniProtKB:  P13053
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Mediator of RNA polymerase II transcription subunit 1
C, F
13Homo sapiensMutation(s): 0 
Gene Names: MED1 (ARC205, CRSP1, CRSP200, DRIP205, DRIP230, PBP, PPARBP, PPARGBP, RB18A, TRAP220, TRIP2)
Find proteins for Q15648 (Homo sapiens)
Go to Gene View: MED1
Go to UniProtKB:  Q15648
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AKX
Query on AKX

Download SDF File 
Download CCD File 
A, D
(1R,3R)-5-[(2E)-2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-oxidanyl-7-phenyl-6-(phenylmethyl)heptan-2-yl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-2-methylidene-cyclohexane-1,3-diol
2-methylidene-26,27-diphenyl-19-nor-1,25-dihydroxy vitamin D3
C39 H52 O3
RRDOSUMZWOEOPZ-BYWDIONYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
AKXIC50: 0.43 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 154.060α = 90.00
b = 41.490β = 97.44
c = 83.890γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-06-29
    Type: Initial release
  • Version 1.1: 2016-08-03
    Type: Database references