3TPX

Crystal structure of human MDM2 in complex with a trifluoromethylated D-peptide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

An Ultrahigh Affinity d-Peptide Antagonist Of MDM2.

Zhan, C.Zhao, L.Wei, X.Wu, X.Chen, X.Yuan, W.Lu, W.Y.Pazgier, M.Lu, W.

(2012) J.Med.Chem. 55: 6237-6241

  • DOI: 10.1021/jm3005465

  • PubMed Abstract: 
  • The oncoprotein MDM2 negatively regulates the activity and stability of the p53 tumor suppressor and is an important molecular target for anticancer therapy. Aided by mirror image phage display and native chemical ligation, we have previously discove ...

    The oncoprotein MDM2 negatively regulates the activity and stability of the p53 tumor suppressor and is an important molecular target for anticancer therapy. Aided by mirror image phage display and native chemical ligation, we have previously discovered several proteolysis-resistant duodecimal d-peptide antagonists of MDM2, termed (D)PMI-α, β, γ. The prototypic d-peptide inhibitor (D)PMI-α binds ((25-109))MDM2 at an affinity of 220 nM and kills tumor cells in vitro and inhibits tumor growth in vivo by reactivating the p53 pathway. Herein, we report the design of a superactive d-peptide antagonist of MDM2, termed (D)PMI-δ, of which the binding affinity for ((25-109))MDM2 has been improved over (D)PMI-α by 3 orders of magnitude (K(d) = 220 pM). X-ray crystallographic studies validate (D)PMI-δ as an exceedingly potent inhibitor of the p53-MDM2 interaction, promising to be a highly attractive lead drug candidate for anticancer therapeutic development.


    Organizational Affiliation

    Institute of Human Virology & Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase Mdm2
A, C, E
85Homo 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
D-peptide inhibitor DPMI-delta
B, D, F
12N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ACT
Query on ACT

Download SDF File 
Download CCD File 
C, E
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

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Download CCD File 
C, E
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000995
Query on PRD_000995
B,D,FD-peptide inhibitor DPMI-deltaPeptide-like / Inhibitor

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.198 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 70.532α = 90.00
b = 211.811β = 90.00
c = 45.327γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
PHASERphasing
SCALEPACKdata scaling
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-09-08 
  • Released Date: 2012-06-20 
  • Deposition Author(s): Wu, X., Pazgier, M.

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release
  • Version 1.1: 2012-06-27
    Type: Database references
  • Version 1.2: 2012-07-25
    Type: Database references
  • Version 1.3: 2012-12-12
    Type: Other
  • Version 1.4: 2013-06-19
    Type: Structure summary