2GL7

Crystal Structure of a beta-catenin/BCL9/Tcf4 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystal Structure of a beta-Catenin/BCL9/Tcf4 Complex.

Sampietro, J.Dahlberg, C.L.Cho, U.S.Hinds, T.R.Kimelman, D.Xu, W.

(2006) Mol Cell 24: 293-300

  • DOI: https://doi.org/10.1016/j.molcel.2006.09.001
  • Primary Citation of Related Structures:  
    2GL7

  • PubMed Abstract: 

    The canonical Wnt pathway plays critical roles in embryonic development, stem cell growth, and tumorigenesis. Stimulation of the Wnt pathway leads to the association of beta-catenin with Tcf and BCL9 in the nucleus, resulting in the transactivation of Wnt target genes. We have determined the crystal structure of a beta-catenin/BCL9/Tcf-4 triple complex at 2.6 A resolution. Our studies reveal that the beta-catenin binding site of BCL9 is distinct from that of most other beta-catenin partners and forms a good target for developing drugs that block canonical Wnt/beta-catenin signaling. The BCL9 beta-catenin binding domain (CBD) forms an alpha helix that binds to the first armadillo repeat of beta-catenin, which can be mutated to prevent beta-catenin binding to BCL9 without affecting cadherin or alpha-catenin binding. We also demonstrate that beta-catenin Y142 phosphorylation, which has been proposed to regulate BCL9-2 binding, does not directly affect the interaction of beta-catenin with either BCL9 or BCL9-2.


  • 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-catenin
A, D
550Homo sapiensMutation(s): 1 
Gene Names: CTNNB1CTNNB
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
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription factor 7-like 2
B, E
53Homo sapiensMutation(s): 0 
Gene Names: TCF7L2TCF4
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NQB0 (Homo sapiens)
Explore Q9NQB0 
Go to UniProtKB:  Q9NQB0
PHAROS:  Q9NQB0
GTEx:  ENSG00000148737 
Entity Groups  
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UniProt GroupQ9NQB0
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
B-cell lymphoma 9 protein
C, F
46Homo sapiensMutation(s): 0 
Gene Names: BCL9
UniProt & NIH Common Fund Data Resources
Find proteins for O00512 (Homo sapiens)
Explore O00512 
Go to UniProtKB:  O00512
PHAROS:  O00512
GTEx:  ENSG00000116128 
Entity Groups  
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UniProt GroupO00512
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.764α = 90
b = 119.441β = 90
c = 130.549γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
AMoREphasing
REFMACrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-10-31
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references
  • Version 1.4: 2024-02-14
    Changes: Data collection