3VZV

Crystal structure of human mdm2 with a dihydroimidazothiazole inhibitor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 

wwPDB Validation   3D Report Full Report



Literature

Lead optimization of novel p53-MDM2 interaction inhibitors possessing dihydroimidazothiazole scaffold

Miyazaki, M., Naito, H., Sugimoto, Y., Kawato, H., Okayama, T., Shimizu, H., Miyazaki, M., Kitagawa, M., Seki, T., Fukutake, S., Aonuma, M., Soga, T.

(2013) Bioorg Med Chem Lett 23: 728-732

  • DOI: 10.1016/j.bmcl.2012.11.091
  • Primary Citation of Related Structures:  
    3VZV

  • PubMed Abstract: 

    • With the aim of discovering potent inhibitors of the p53-MDM2 interaction and thus obtaining a potent anticancer drug, we have pursued synthesis and optimization of dihydroimidazothiazole derivatives, which have been discovered via scaffold hopping b ...

    With the aim of discovering potent inhibitors of the p53-MDM2 interaction and thus obtaining a potent anticancer drug, we have pursued synthesis and optimization of dihydroimidazothiazole derivatives, which have been discovered via scaffold hopping by mimicing the mode of interaction between MDM2 and Nutlins. Upon the discovery we encountered a problem involving the chemical instability of the scaffold, that is, susceptibility to oxidation which led to imidazothiazole. In order to solve this problem and to obtain further potent compounds, we executed medicinal research and thus furnished the optimal compounds by incorporating the methyl group onto the C-6 position to avoid the oxidation, and by modifying the C-2 moiety of the additional proline motif, which furnished high potency. The incorporation of the pyrrolidine moiety at the C-2 position raised another hydrophobic interaction site with MDM2 protein, which was generated by the induced-fitting observed by co-crystal structure analysis. These optimal molecules showed significant improvement in potency when compared with the early lead (+)-1 or Nutlin-3a.

    Organizational Affiliation: 

    Lead Discovery & Optimization Research Laboratories II, R&D Division, Daiichi Sankyo Co., Ltd, 1-2-58 Hiromachi, Tokyo 140-8710, Japan. miyazaki.masaki.p3@daiichisankyo.co.jp



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase Mdm2A, B87Homo sapiensMutation(s): 1 
Gene Names: MDM2
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (UniProt)
Find proteins for Q00987 (Homo sapiens)
Explore Q00987 
Go to UniProtKB:  Q00987
NIH Common Fund Data Resources
PHAROS  Q00987
GTEx  ENSG00000135679
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
VZV
Query on VZV
Download Ideal Coordinates CCD File 
A, B
1-{[(5R,6S)-5,6-bis(4-chlorophenyl)-6-methyl-3-(propan-2-yl)-5,6-dihydroimidazo[2,1-b][1,3]thiazol-2-yl]carbonyl}-N,N-dimethyl-L-prolinamide
C29 H32 Cl2 N4 O2 S
BWUMOCARMRPCIP-HQQGYVGFSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
VZVIC50 :  9.199999809265137   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.255α = 90
b = 66.076β = 90
c = 80.419γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-06
    Type: Initial release