4DJS

Structure of beta-catenin in complex with a stapled peptide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.029 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.263 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Inhibition of oncogenic Wnt signaling through direct targeting of beta-catenin.

Grossmann, T.N.Yeh, J.T.Bowman, B.R.Chu, Q.Moellering, R.E.Verdine, G.L.

(2012) Proc.Natl.Acad.Sci.USA 109: 17942-17947

  • DOI: 10.1073/pnas.1208396109

  • PubMed Abstract: 
  • Aberrant activation of signaling by the Wnt pathway is strongly implicated in the onset and progression of numerous types of cancer. Owing to the persistent dependence of these tumors on Wnt signaling for growth and survival, inhibition of this pathw ...

    Aberrant activation of signaling by the Wnt pathway is strongly implicated in the onset and progression of numerous types of cancer. Owing to the persistent dependence of these tumors on Wnt signaling for growth and survival, inhibition of this pathway is considered an attractive mechanism-based therapeutic approach. Oncogenic activation of Wnt signaling can ensue from a variety of distinct aberrations in the signaling pathway, but most share the common feature of causing increased cellular levels of β-catenin by interfering with its constitutive degradation. β-Catenin serves as a central hub in Wnt signaling by engaging in crucial protein-protein interactions with both negative and positive effectors of the pathway. Direct interference with these protein-protein interactions is a biologically compelling approach toward suppression of β-catenin hyperactivity, but such interactions have proven intransigent with respect to small-molecule targeting. Hence β-catenin remains an elusive target for translational cancer therapy. Here we report the discovery of a hydrocarbon-stapled peptide that directly targets β-catenin and interferes with its ability to serve as a transcriptional coactivator for T-cell factor (TCF) proteins, the downstream transcriptional regulators of the Wnt pathway.


    Organizational Affiliation

    Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Catenin beta-1
A
518Homo sapiensMutation(s): 0 
Gene Names: CTNNB1 (CTNNB)
Find proteins for P35222 (Homo sapiens)
Go to Gene View: CTNNB1
Go to UniProtKB:  P35222
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
stapled peptide RRWPQ(MK8)ILD(MK8)HVRRVWR
B
17N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MK8
Query on MK8
B
L-peptide linkingC7 H15 N O2LEU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.029 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.263 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.060α = 90.00
b = 74.808β = 90.00
c = 135.714γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSphasing
PHENIXrefinement
CNSrefinement
ADSCdata collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references