4MDQ

Structure of a novel submicromolar MDM2 inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.119 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Transient Protein States in Designing Inhibitors of the MDM2-p53 Interaction.

Bista, M.Wolf, S.Khoury, K.Kowalska, K.Huang, Y.Wrona, E.Arciniega, M.Popowicz, G.M.Holak, T.A.Domling, A.

(2013) Structure 21: 2143-2151

  • DOI: 10.1016/j.str.2013.09.006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Reactivation of p53 by release of the functional protein from its inhibition by MDM2 provides an efficient, nongenotoxic approach to a wide variety of cancers. We present the cocrystal structures of two complexes of MDM2 with inhibitors based on 6-ch ...

    Reactivation of p53 by release of the functional protein from its inhibition by MDM2 provides an efficient, nongenotoxic approach to a wide variety of cancers. We present the cocrystal structures of two complexes of MDM2 with inhibitors based on 6-chloroindole scaffolds. Both molecules bound to a distinct conformational state of MDM2 with nM-μM affinities. In contrast to other structurally characterized antagonists, which mimic three amino acids of p53 (Phe19, Trp23, and Leu26), the compounds induced an additional hydrophobic pocket on the MDM2 surface and unveiled a four-point binding mode. The enlarged interaction interface of the inhibitors resulted in extension of small molecules binding toward the "lid" segment of MDM2 (residues 19-23)--a nascent element that interferes with p53 binding. As supported by protein engineering and molecular dynamics studies, employing these unstable elements of MDM2 provides an efficient and yet unexplored alternative in development of MDM2-p53 association inhibitors.


    Organizational Affiliation

    Max-Planck-Institute of Biochemistry, 82152 Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase Mdm2
A
86Homo sapiensMutation(s): 0 
Gene Names: MDM2
EC: 2.3.2.27
Find proteins for Q00987 (Homo sapiens)
Go to Gene View: MDM2
Go to UniProtKB:  Q00987
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
28W
Query on 28W

Download SDF File 
Download CCD File 
A
3-[(1R)-2-(benzylamino)-1-{[(2S)-1-(hydroxyamino)-4-methyl-1-oxopentan-2-yl]amino}-2-oxoethyl]-6-chloro-N-hydroxy-1H-indole-2-carboxamide
C24 H28 Cl N5 O5
VRQFWSWBTGHUMK-AZUAARDMSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
28WKi: 900 - 1200 nM (100) BINDINGDB
28WKi: 1200 nM BINDINGMOAD
28WKi: 1200 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.119 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.185 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 53.520α = 90.00
b = 53.520β = 90.00
c = 122.270γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-13
    Type: Initial release
  • Version 1.1: 2013-12-04
    Type: Database references
  • Version 1.2: 2013-12-25
    Type: Database references