4RP7

Structure of the amyloid-forming segment TIITLE from p53 (residues 253-258)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.167 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A Designed Inhibitor of p53 Aggregation Rescues p53 Tumor Suppression in Ovarian Carcinomas.

Soragni, A.Janzen, D.M.Johnson, L.M.Lindgren, A.G.Thai-Quynh Nguyen, A.Tiourin, E.Soriaga, A.B.Lu, J.Jiang, L.Faull, K.F.Pellegrini, M.Memarzadeh, S.Eisenberg, D.S.

(2016) Cancer Cell 29: 90-103

  • DOI: 10.1016/j.ccell.2015.12.002
  • Primary Citation of Related Structures:  
    4RP6, 4RP7

  • PubMed Abstract: 
  • Half of all human cancers lose p53 function by missense mutations, with an unknown fraction of these containing p53 in a self-aggregated amyloid-like state. Here we show that a cell-penetrating peptide, ReACp53, designed to inhibit p53 amyloid formation, rescues p53 function in cancer cell lines and in organoids derived from high-grade serous ovarian carcinomas (HGSOC), an aggressive cancer characterized by ubiquitous p53 mutations ...

    Half of all human cancers lose p53 function by missense mutations, with an unknown fraction of these containing p53 in a self-aggregated amyloid-like state. Here we show that a cell-penetrating peptide, ReACp53, designed to inhibit p53 amyloid formation, rescues p53 function in cancer cell lines and in organoids derived from high-grade serous ovarian carcinomas (HGSOC), an aggressive cancer characterized by ubiquitous p53 mutations. Rescued p53 behaves similarly to its wild-type counterpart in regulating target genes, reducing cell proliferation and increasing cell death. Intraperitoneal administration decreases tumor proliferation and shrinks xenografts in vivo. Our data show the effectiveness of targeting a specific aggregation defect of p53 and its potential applicability to HGSOCs.


    Organizational Affiliation

    Departments of Biological Chemistry and Chemistry and Biochemistry, UCLA-DOE Institute, HHMI, 611 South Charles E. Young Drive, Los Angeles, CA 90095-1570, USA. Electronic address: david@mbi.ucla.edu.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TIITLE hexapeptide segment from p53A [auth Z]6Homo sapiensMutation(s): 0 
Gene Names: TP53P53
UniProt & NIH Common Fund Data Resources
Find proteins for P04637 (Homo sapiens)
Explore P04637 
Go to UniProtKB:  P04637
PHAROS:  P04637
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 
B [auth Z]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.167 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.018α = 90
b = 4.849β = 92.12
c = 19.774γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-13
    Type: Initial release
  • Version 1.1: 2016-01-27
    Changes: Database references