Crystal structure of p53 Y220C covalently bound to carbazole KG3

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.176 

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A Small Molecule Reacts with the p53 Somatic Mutant Y220C to Rescue Wild-type Thermal Stability.

Guiley, K.Z.Shokat, K.M.

(2023) Cancer Discov 13: 56-69

  • DOI: https://doi.org/10.1158/2159-8290.CD-22-0381
  • Primary Citation of Related Structures:  
    8DC4, 8DC6, 8DC7, 8DC8

  • PubMed Abstract: 

    The transcription factor and tumor suppressor protein p53 is the most frequently mutated and inactivated gene in cancer. Mutations in p53 result in deregulated cell proliferation and genomic instability, both hallmarks of cancer. There are currently no therapies available that directly target mutant p53 to rescue wild-type function. In this study, we identify covalent compsounds that selectively react with the p53 somatic mutant cysteine Y220C and restore wild-type thermal stability.

  • Organizational Affiliation

    Department of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, California.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cellular tumor antigen p53A [auth B],
B [auth A],
223Homo sapiensMutation(s): 1 
Gene Names: TP53P53
UniProt & NIH Common Fund Data Resources
Find proteins for P04637 (Homo sapiens)
Explore P04637 
Go to UniProtKB:  P04637
GTEx:  ENSG00000141510 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04637
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.176 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.56α = 90
b = 68.56β = 90
c = 220.212γ = 120
Software Package:
Software NamePurpose
Blu-Icedata collection
iMOSFLMdata reduction
Aimlessdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United StatesDRG: 2399-20

Revision History  (Full details and data files)

  • Version 1.0: 2022-10-12
    Type: Initial release
  • Version 1.1: 2023-01-18
    Changes: Database references
  • Version 1.2: 2023-10-25
    Changes: Data collection, Refinement description