1JDH

CRYSTAL STRUCTURE OF BETA-CATENIN AND HTCF-4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Tcf4 can specifically recognize beta-catenin using alternative conformations.

Graham, T.A.Ferkey, D.M.Mao, F.Kimelman, D.Xu, W.

(2001) Nat Struct Biol 8: 1048-1052

  • DOI: https://doi.org/10.1038/nsb718
  • Primary Citation of Related Structures:  
    1JDH

  • PubMed Abstract: 

    Accumulation of the Wnt pathway effector beta-catenin is a hallmark of a number of cancers, including colon cancer. As beta-catenin accumulates in the cell, it forms a complex with Tcf family transcription factors and activates the transcription of several critical genes involved in cell proliferation. Because Tcf4 is the predominant Tcf factor present in colon cancer cells, drugs that specifically disrupt the beta-catenin-Tcf4 complex could be useful in treating colon cancers. Earlier structural and biochemical studies demonstrated that the central region of the beta-catenin binding domain of Tcf is essential for anchoring Tcf to beta-catenin via two conserved lysines in beta-catenin (called the charged 'buttons'). Here we report the crystal structure of a beta-catenin-Tcf4 complex at 2.0 A resolution. Our structural and mutagenesis studies show that Tcf4 docks specifically to beta-catenin using several distinct conformations in its essential central region. These conformations allow different glutamate residues in the central region of Tcf4 to form a salt bridge with the same critical charged button, Lys 312 of beta-catenin. We propose that this interaction may be the first event in beta-catenin-Tcf4 recognition.


  • Organizational Affiliation

    Department of Biological Structure, University of Washington, Seattle, Washington 98195, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-CATENIN529Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P35222 (Homo sapiens)
Explore P35222 
Go to UniProtKB:  P35222
PHAROS:  P35222
GTEx:  ENSG00000168036 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35222
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
hTcf-438Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NQB0 (Homo sapiens)
Explore Q9NQB0 
Go to UniProtKB:  Q9NQB0
PHAROS:  Q9NQB0
GTEx:  ENSG00000148737 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NQB0
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.77α = 90
b = 76.033β = 90
c = 159.129γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-12-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection
  • Version 1.4: 2024-02-07
    Changes: Data collection, Database references