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 1.2 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: 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 o ...

    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)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-cateninAD550Homo sapiensMutation(s): 1 
Gene Names: CTNNB1CTNNBOK/SW-cl.35PRO2286
Find proteins for P35222 (Homo sapiens)
Explore P35222 
Go to UniProtKB:  P35222
NIH Common Fund Data Resources
PHAROS  P35222
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor 7-like 2BE53Homo sapiensMutation(s): 0 
Gene Names: TCF7L2TCF4
Find proteins for Q9NQB0 (Homo sapiens)
Explore Q9NQB0 
Go to UniProtKB:  Q9NQB0
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PHAROS  Q9NQB0
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
B-cell lymphoma 9 proteinCF46Homo sapiensMutation(s): 0 
Gene Names: BCL9
Find proteins for O00512 (Homo sapiens)
Explore O00512 
Go to UniProtKB:  O00512
NIH Common Fund Data Resources
PHAROS  O00512
Protein Feature View
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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

  • Deposited Date: 2006-04-04 
  • Released Date: 2006-10-31 
  • Deposition Author(s): Sampietro, J.

Revision History 

  • 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