Crystal structure of human TLE1 Q-domain residues 20-156

Experimental Data Snapshot

  • Resolution: 2.85 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.237 

wwPDB Validation   3D Report Full Report

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Molecular functions of the TLE tetramerization domain in Wnt target gene repression.

Chodaparambil, J.V.Pate, K.T.Hepler, M.R.Tsai, B.P.Muthurajan, U.M.Luger, K.Waterman, M.L.Weis, W.I.

(2014) EMBO J 33: 719-731

  • DOI: https://doi.org/10.1002/embj.201387188
  • Primary Citation of Related Structures:  
    4OM2, 4OM3

  • PubMed Abstract: 

    Wnt signaling activates target genes by promoting association of the co-activator β-catenin with TCF/LEF transcription factors. In the absence of β-catenin, target genes are silenced by TCF-mediated recruitment of TLE/Groucho proteins, but the molecular basis for TLE/TCF-dependent repression is unclear. We describe the unusual three-dimensional structure of the N-terminal Q domain of TLE1 that mediates tetramerization and binds to TCFs. We find that differences in repression potential of TCF/LEFs correlates with their affinities for TLE-Q, rather than direct competition between β-catenin and TLE for TCFs as part of an activation-repression switch. Structure-based mutation of the TLE tetramer interface shows that dimers cannot mediate repression, even though they bind to TCFs with the same affinity as tetramers. Furthermore, the TLE Q tetramer, not the dimer, binds to chromatin, specifically to K20 methylated histone H4 tails, suggesting that the TCF/TLE tetramer complex promotes structural transitions of chromatin to mediate repression.

  • Organizational Affiliation

    Departments of Structural Biology and Molecular & Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transducin-like enhancer protein 1
A, B, C, D
147Homo sapiensMutation(s): 0 
Gene Names: TLETLE1
UniProt & NIH Common Fund Data Resources
Find proteins for Q04724 (Homo sapiens)
Explore Q04724 
Go to UniProtKB:  Q04724
GTEx:  ENSG00000196781 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04724
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.85 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.237 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.687α = 90
b = 89.678β = 90
c = 130.358γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
Blu-Icedata collection
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-09
    Type: Initial release
  • Version 1.1: 2014-04-16
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations