4RP6

Structure of the amyloid-forming segment LTIITLE from p53 (residues 252-258)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.703 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.163 

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:  

  • 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 format ...

    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 inĀ 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, LosĀ Angeles, CA 90095-1570, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LTIITLE heptapeptide segment from p53
Z
7Homo sapiensMutation(s): 0 
Gene Names: TP53 (P53)
Find proteins for P04637 (Homo sapiens)
Go to Gene View: TP53
Go to UniProtKB:  P04637
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.703 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.163 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 4.811α = 86.59
b = 12.599β = 89.29
c = 21.340γ = 79.15
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
PHASERphasing
ADSCdata collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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