5XPO

Crystal structure of VDR-LBD complexed with 25-(hydroxyphenyl)-2-methylidene-19,26,27-trinor-25-oxo-1-hydroxyvitamin D3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.216 

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Literature

Vitamin D Analogues with a p-Hydroxyphenyl Group at the C25 Position: Crystal Structure of Vitamin D Receptor Ligand-Binding Domain Complexed with the Ligand Explains the Mechanism Underlying Full Antagonistic Action

Kato, A.Yamao, M.Hashihara, Y.Ishida, H.Itoh, T.Yamamoto, K.

(2017) J Med Chem 60: 8394-8406

  • DOI: 10.1021/acs.jmedchem.7b00819
  • Primary Citation of Related Structures:  
    5XPL, 5XPM, 5XPN, 5XPO, 5XPP

  • PubMed Abstract: 
  • Vitamin D receptor (VDR) antagonists can be classified into two categories: the first category of VDR antagonists, which do not stabilize the helix 11-12, and the second category of antagonists, which destabilize the helix 6-7 region. To elucidate the mechanism underlying the first category antagonists by using the crystal structure, we designed and synthesized several VDR ligands with a p-hydroxyphenyl group at the C25-position ...

    Vitamin D receptor (VDR) antagonists can be classified into two categories: the first category of VDR antagonists, which do not stabilize the helix 11-12, and the second category of antagonists, which destabilize the helix 6-7 region. To elucidate the mechanism underlying the first category antagonists by using the crystal structure, we designed and synthesized several VDR ligands with a p-hydroxyphenyl group at the C25-position. Of these, 22S-butyl-25-carbonyl analogue 5b and 25-di-p-hydoroxyphenyl analogues 6a,b showed strong antagonistic activity. We succeeded in cocrystallizing the ligand-binding domain of VDR complexed with 5b and found that the structure showed an alternative conformation of the helix 11-12 that explained the mechanism of the first category antagonists. Taking the present and previous studies together, we could elucidate the mechanisms underlying first and second categories antagonists based on individual crystal structures. This study provides significant insights into antagonism against not only VDR but also nuclear receptors.


    Organizational Affiliation

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



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Vitamin D3 receptorA271Rattus norvegicusMutation(s): 0 
Gene Names: VdrNr1i1
UniProt
Find proteins for P13053 (Rattus norvegicus)
Explore P13053 
Go to UniProtKB:  P13053
Entity Groups  
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UniProt GroupP13053
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Mediator of RNA polymerase II transcription subunit 1B [auth C]13Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for Q15648 (Homo sapiens)
Explore Q15648 
Go to UniProtKB:  Q15648
PHAROS:  Q15648
GTEx:  ENSG00000125686 
Entity Groups  
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UniProt GroupQ15648
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8BL
Query on 8BL

Download Ideal Coordinates CCD File 
C [auth A](5~{R})-5-[(1~{R},3~{a}~{S},4~{E},7~{a}~{R})-7~{a}-methyl-4-[2-[(3~{R},5~{R})-4-methylidene-3,5-bis(oxidanyl)cyclohexyl idene]ethylidene]-2,3,3~{a},5,6,7-hexahydro-1~{H}-inden-1-yl]-1-(4-hydroxyphenyl)hexan-1-one
C31 H42 O4
AVOJSQKILRAHNA-SLEIQBAPSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
8BL Binding MOAD:  5XPO IC50: 84 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.216 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.56α = 90
b = 43.39β = 95.48
c = 42.13γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-06-06
    Type: Initial release
  • Version 1.1: 2018-06-13
    Changes: Data collection, Database references