2IOO

Crystal structure of the mouse p53 core domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.02 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

High-resolution structure of the p53 core domain: implications for binding small-molecule stabilizing compounds.

Ho, W.C.Luo, C.Zhao, K.Chai, X.Fitzgerald, M.X.Marmorstein, R.

(2006) Acta Crystallogr D Biol Crystallogr 62: 1484-1493

  • DOI: 10.1107/S090744490603890X
  • Primary Citation of Related Structures:  
    2IOO, 2IOM, 2IOI

  • PubMed Abstract: 
  • The p53 transcriptional regulator is the most frequently mutated protein in human cancers and the majority of tumor-derived p53 mutations map to the central DNA-binding core domain, with a subset of these mutations resulting in reduced p53 stability. ...

    The p53 transcriptional regulator is the most frequently mutated protein in human cancers and the majority of tumor-derived p53 mutations map to the central DNA-binding core domain, with a subset of these mutations resulting in reduced p53 stability. Here, the 1.55 A crystal structure of the mouse p53 core domain with a molecule of tris(hydroxymethyl)aminomethane (Tris) bound through multiple hydrogen bonds to a region of p53 shown to be important for repair of a subset of tumor-derived p53-stability mutations is reported. Consistent with the hypothesis that Tris binding stabilizes the p53 core domain, equilibrium denaturation experiments are presented that demonstrate that Tris binding increases the thermodynamic stability of the mouse p53 core domain by 3.1 kJ mol(-1) and molecular-dynamic simulations are presented revealing an overall reduction in root-mean-square deviations of the core domain of 0.7 A when Tris is bound. It is also shown that these crystals of the p53 core domain are suitable for the multiple-solvent crystal structure approach to identify other potential binding sites for possible core-domain stabilization compounds. Analysis of the residue-specific temperature factors of the high-resolution core-domain structure, coupled with a comparison with other core-domain structures, also reveals that the L1, H1-S5 and S7-S8 core-domain loops, also shown to mediate various p53 activities, harbor inherent flexibility, suggesting that these regions might be targets for other p53-stabilizing compounds. Together, these studies provide a molecular scaffold for the structure-based design of p53-stabilization compounds for development as possible therapeutic agents.


    Organizational Affiliation

    The Wistar Institute, Philadelphia, PA 19104, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cellular tumor antigen p53A201Mus musculusMutation(s): 0 
Gene Names: Tp53P53Trp53
Find proteins for P02340 (Mus musculus)
Explore P02340 
Go to UniProtKB:  P02340
NIH Common Fund Data Resources
IMPC  MGI:98834
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.02 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.210 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.568α = 90
b = 44.709β = 125.61
c = 62.607γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-12-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description