3ZJB

The structure of the TRAF domain of human TRAF4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.163 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Traf4 is a Novel Phosphoinositide-Binding Protein Modulating Tight Junctions and Favoring Cell Migration.

Rousseau, A.Mcewen, A.G.Poussin-Courmontagne, P.Rognan, D.Nomine, Y.Rio, M.-C.Tomasetto, C.Alpy, F.

(2013) Plos Biol. 11: 1726

  • DOI: 10.1371/journal.pbio.1001726

  • PubMed Abstract: 
  • Tumor necrosis factor (TNF) receptor-associated factor 4 (TRAF4) is frequently overexpressed in carcinomas, suggesting a specific role in cancer. Although TRAF4 protein is predominantly found at tight junctions (TJs) in normal mammary epithelial cell ...

    Tumor necrosis factor (TNF) receptor-associated factor 4 (TRAF4) is frequently overexpressed in carcinomas, suggesting a specific role in cancer. Although TRAF4 protein is predominantly found at tight junctions (TJs) in normal mammary epithelial cells (MECs), it accumulates in the cytoplasm of malignant MECs. How TRAF4 is recruited and functions at TJs is unclear. Here we show that TRAF4 possesses a novel phosphoinositide (PIP)-binding domain crucial for its recruitment to TJs. Of interest, this property is shared by the other members of the TRAF protein family. Indeed, the TRAF domain of all TRAF proteins (TRAF1 to TRAF6) is a bona fide PIP-binding domain. Molecular and structural analyses revealed that the TRAF domain of TRAF4 exists as a trimer that binds up to three lipids using basic residues exposed at its surface. Cellular studies indicated that TRAF4 acts as a negative regulator of TJ and increases cell migration. These functions are dependent from its ability to interact with PIPs. Our results suggest that TRAF4 overexpression might contribute to breast cancer progression by destabilizing TJs and favoring cell migration.


    Organizational Affiliation

    Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Functional Genomics and Cancer Department, Illkirch, France ; Institut National de la Santé et de la Recherche Médicale (INSERM), U 964, Illkirch, France ; Centre National de la Recherche Scientifique (CNRS), UMR 7104, Illkirch, France ; Université de Strasbourg, Illkirch, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TNF RECEPTOR-ASSOCIATED FACTOR 4
A, B, C
197Homo sapiensMutation(s): 0 
Gene Names: TRAF4 (CART1, MLN62, RNF83)
Find proteins for Q9BUZ4 (Homo sapiens)
Go to Gene View: TRAF4
Go to UniProtKB:  Q9BUZ4
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, C
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.163 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 54.620α = 90.00
b = 85.440β = 108.08
c = 61.650γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
Aimlessdata scaling
BUSTERrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-04
    Type: Initial release
  • Version 1.1: 2013-12-18
    Type: Database references