crystal structure of MDM2 with chromenotriazolopyrimidine 1

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.300 

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Discovery and optimization of chromenotriazolopyrimidines as potent inhibitors of the mouse double minute 2-tumor protein 53 protein-protein interaction.

Allen, J.G.Bourbeau, M.P.Wohlhieter, G.E.Bartberger, M.D.Michelsen, K.Hungate, R.Gadwood, R.C.Gaston, R.D.Evans, B.Mann, L.W.Matison, M.E.Schneider, S.Huang, X.Yu, D.Andrews, P.S.Reichelt, A.Long, A.M.Yakowec, P.Yang, E.Y.Lee, T.A.Oliner, J.D.

(2009) J Med Chem 52: 7044-7053

  • DOI: https://doi.org/10.1021/jm900681h
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Tumor protein 53 (p53) is a critical regulator of cell cycle and apoptosis that is frequently disabled in human tumors. In many tumor types, p53 is deleted or mutated, but in others p53 is inactivated by overexpression or amplification of its negative regulator mouse double minute 2 (MDM2). A high-throughput screening effort identified 6,7-bis(4-bromophenyl)-7,12-dihydro-6H-chromeno[4,3-d][1,2,4]triazolo[1,5-a]pyrimidine as a potent inhibitor of the MDM2-p53 protein-protein interaction. This screening hit was found to be chemically unstable and difficult to handle due to poor DMSO solubility. Co-crystallization with the target protein helped to direct further optimization and provided a tractable lead series of novel MDM2-p53 inhibitors. In cellular assays, these compounds were shown to upregulate p53 protein levels and p53 signaling and to cause p53-dependent inhibition of proliferation and apoptosis.

  • Organizational Affiliation

    Chemistry Research and Discovery, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, USA. johallen@amgen.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase Mdm296Homo sapiensMutation(s): 0 
Gene Names: MDM2
EC: 6.3.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q00987 (Homo sapiens)
Explore Q00987 
Go to UniProtKB:  Q00987
PHAROS:  Q00987
GTEx:  ENSG00000135679 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00987
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on YIN

Download Ideal Coordinates CCD File 
B [auth A](6R,7S)-6,7-bis(4-bromophenyl)-7,11-dihydro-6H-chromeno[4,3-d][1,2,4]triazolo[1,5-a]pyrimidine
C24 H16 Br2 N4 O
Binding Affinity Annotations 
IDSourceBinding Affinity
YIN PDBBind:  3JZK IC50: 1230 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.300 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.53α = 90
b = 34.53β = 90
c = 161.251γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2009-11-17 
  • Deposition Author(s): Huang, X.

Revision History  (Full details and data files)

  • Version 1.0: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description