Co-Crystal Structure of MDM2 with Inhbitor Compound 3

Experimental Data Snapshot

  • Resolution: 1.38 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Novel Inhibitors of the MDM2-p53 Interaction Featuring Hydrogen Bond Acceptors as Carboxylic Acid Isosteres.

Gonzalez, A.Z.Li, Z.Beck, H.P.Canon, J.Chen, A.Chow, D.Duquette, J.Eksterowicz, J.Fox, B.M.Fu, J.Huang, X.Houze, J.Jin, L.Li, Y.Ling, Y.Lo, M.C.Long, A.M.McGee, L.R.McIntosh, J.Oliner, J.D.Osgood, T.Rew, Y.Saiki, A.Y.Shaffer, P.Wortman, S.Yakowec, P.Yan, X.Ye, Q.Yu, D.Zhao, X.Zhou, J.Olson, S.H.Sun, D.Medina, J.C.

(2014) J Med Chem 57: 2963-2988

  • DOI: https://doi.org/10.1021/jm401911v
  • Primary Citation of Related Structures:  
    4OCC, 4ODE, 4ODF, 4OGN, 4OGT, 4OGV

  • PubMed Abstract: 

    We previously reported the discovery of potent and selective morpholinone and piperidinone inhibitors of the MDM2-p53 interaction. These inhibitors have in common a carboxylic acid moiety that engages in an electrostatic interaction with MDM2-His96. Our continued search for potent and diverse inhibitors led to the discovery of novel replacements for these acids uncovering new interactions with the MDM2 protein. In particular, using pyridine or thiazole as isosteres of the carboxylic acid moiety resulted in very potent analogues. From these, AM-6761 (4) emerged as a potent inhibitor with remarkable biochemical (HTRF IC50 = 0.1 nM) and cellular potency (SJSA-1 EdU IC50 = 16 nM), as well as favorable pharmacokinetic properties. Compound 4 also shows excellent antitumor activity in the SJSA-1 osteosarcoma xenograft model with an ED50 of 11 mg/kg. Optimization efforts toward the discovery of these inhibitors as well as the new interactions observed with the MDM2 protein are described herein.

  • Organizational Affiliation

    Departments of Therapeutic Discovery, ‡Pharmaceutics, and §Pharmacokinetics and Drug Metabolism, Amgen Inc. , 1120 Veterans Boulevard, South San Francisco, California 94080, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase Mdm2105Homo 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
GTEx:  ENSG00000135679 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00987
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 2U5

Download Ideal Coordinates CCD File 
B [auth A]6-{[(3R,5R,6S)-1-[(1S)-2-(tert-butylsulfonyl)-1-cyclopropylethyl]-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-3-yl]methyl}pyridine-3-carboxylic acid
C34 H38 Cl2 N2 O5 S
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]
O4 S
Binding Affinity Annotations 
IDSourceBinding Affinity
2U5 BindingDB:  4OGN IC50: min: 0.1, max: 5 (nM) from 3 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.38 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.517α = 90
b = 45.517β = 90
c = 208.624γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-02
    Type: Initial release
  • Version 1.1: 2014-06-18
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Refinement description
  • Version 1.3: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description