2X0V image
Entry Detail
PDB ID:
2X0V
Keywords:
Title:
STRUCTURE OF THE P53 CORE DOMAIN MUTANT Y220C BOUND TO 4-(trifluoromethyl)benzene-1,2-diamine
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2009-12-17
Release Date:
2010-01-26
Method Details:
Experimental Method:
Resolution:
1.80 Å
R-Value Free:
0.18
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:CELLULAR TUMOR ANTIGEN P53
Mutations:YES
Chain IDs:A, B
Chain Length:219
Number of Molecules:2
Biological Source:HOMO SAPIENS
Primary Citation
Toward the Rational Design of P53-Stabilizing Drugs: Probing the Surface of the Oncogenic Y220C Mutant.
Chem.Biol. 17 46 ? (2010)
PMID: 20142040 DOI: 10.1016/J.CHEMBIOL.2009.12.011

Abstact

The p53 cancer mutation Y220C induces formation of a cavity on the protein's surface that can accommodate stabilizing small molecules. We combined fragment screening and molecular dynamics to assess the druggability of p53-Y220C and map ligand interaction sites within the mutational cavity. Elucidation of the binding mode of fragment hits by crystallography yielded a clear picture of how a drug might dock in the cavity. Simulations that solvate the protein with isopropanol found additional sites that extend the druggable surface. Moreover, structural observations and simulation revealed the dynamic landscape of the cavity, which improves our understanding of the impact of the mutation on p53 stability. This underpins the importance of considering flexibility of the cavity in screening for optimized ligands. Our findings provide a blueprint for the design of effective drugs that rescue p53-Y220C.

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