4AGP

Structure of the p53 core domain mutant Y220C bound to the stabilizing small molecule PhiKan5176

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 

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This is version 1.3 of the entry. See complete history. 


Literature

Halogen-Enriched Fragment Libraries as Leads for Drug Rescue of Mutant P53.

Wilcken, R., Liu, X., Zimmermann, M.O., Rutherford, T.J., Fersht, A.R., Joerger, A.C., Boeckler, F.M.

(2012) J Am Chem Soc 134: 6810

  • DOI: 10.1021/ja301056a
  • Primary Citation of Related Structures:  
    4AGL, 4AGM, 4AGN, 4AGO, 4AGP, 4AGQ

  • PubMed Abstract: 

    • The destabilizing p53 cancer mutation Y220C creates a druggable surface crevice. We developed a strategy exploiting halogen bonding for lead discovery to stabilize the mutant with small molecules. We designed halogen-enriched fragment libraries (HEFLibs) as starting points to complement classical approaches ...

    The destabilizing p53 cancer mutation Y220C creates a druggable surface crevice. We developed a strategy exploiting halogen bonding for lead discovery to stabilize the mutant with small molecules. We designed halogen-enriched fragment libraries (HEFLibs) as starting points to complement classical approaches. From screening of HEFLibs and subsequent structure-guided design, we developed substituted 2-(aminomethyl)-4-ethynyl-6-iodophenols as p53-Y220C stabilizers. Crystal structures of their complexes highlight two key features: (i) a central scaffold with a robust binding mode anchored by halogen bonding of an iodine with a main-chain carbonyl and (ii) an acetylene linker, enabling the targeting of an additional subsite in the crevice. The best binders showed induction of apoptosis in a human cancer cell line with homozygous Y220C mutation. Our structural and biophysical data suggest a more widespread applicability of HEFLibs in drug discovery.

    Related Citations: 
    • Structural Basis for Understanding Oncogenic P53 Mutations and Designing Rescue Drugs.
      Joerger, A.C., Ang, H.C., Fersht, A.R.
      (2006) Proc Natl Acad Sci U S A 103: 15056
    Organizational Affiliation: 

    Laboratory for Molecular Design and Pharmaceutical Biophysics, Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Eberhard-Karls-University Tuebingen, Auf der Morgenstelle 8, 72076 Tuebingen, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CELLULAR TUMOR ANTIGEN P53A, B219Homo sapiensMutation(s): 5 
Gene Names: TP53, P53
UniProt & NIH Common Fund Data Resources
Find proteins for P04637 (Homo sapiens)
Explore P04637 
Go to UniProtKB:  P04637
PHAROS:  P04637
GTEx:  ENSG00000141510
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
P51 (Subject of Investigation/LOI)
Query on P51
Download Ideal Coordinates CCD File 
C [auth A], E [auth B]2-{[4-(diethylamino)piperidin-1-yl]methyl}-6-iodo-4-(3-phenoxyprop-1-yn-1-yl)phenol
C25 H31 I N2 O2
QHQZDNCRBPFORJ-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
D [auth A], F [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
P51 PDBBind:  4AGP Kd: 2.06e+4 (nM) from 1 assay(s)
Binding MOAD:  4AGP Kd: 2.06e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.08α = 90
b = 71.17β = 90
c = 104.98γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-03-21
    Type: Initial release
  • Version 1.1: 2012-05-02
    Changes: Other
  • Version 1.2: 2019-05-08
    Changes: Data collection, Experimental preparation, Other
  • Version 1.3: 2019-05-15
    Changes: Data collection, Experimental preparation