1FLK

MOLECULAR BASIS FOR CD40 SIGNALING MEDIATED BY TRAF3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis for CD40 signaling mediated by TRAF3.

Ni, C.Z.Welsh, K.Leo, E.Chiou, C.K.Wu, H.Reed, J.C.Ely, K.R.

(2000) Proc.Natl.Acad.Sci.USA 97: 10395-10399

  • Primary Citation of Related Structures:  1FLL

  • PubMed Abstract: 
  • Tumor necrosis factor receptors (TNFR) are single transmembrane-spanning glycoproteins that bind cytokines and trigger multiple signal transduction pathways. Many of these TNFRs rely on interactions with TRAF proteins that bind to the intracellular d ...

    Tumor necrosis factor receptors (TNFR) are single transmembrane-spanning glycoproteins that bind cytokines and trigger multiple signal transduction pathways. Many of these TNFRs rely on interactions with TRAF proteins that bind to the intracellular domain of the receptors. CD40 is a member of the TNFR family that binds to several different TRAF proteins. We have determined the crystal structure of a 20-residue fragment from the cytoplasmic domain of CD40 in complex with the TRAF domain of TRAF3. The CD40 fragment binds as a hairpin loop across the surface of the TRAF domain. Residues shown by mutagenesis and deletion analysis to be critical for TRAF3 binding are involved either in direct contact with TRAF3 or in intramolecular interactions that stabilize the hairpin. Comparison of the interactions of CD40 with TRAF3 vs. TRAF2 suggests that CD40 may assume different conformations when bound to different TRAF family members. This molecular adaptation may influence binding affinity and specific cellular triggers.


    Organizational Affiliation

    Cancer Center, The Burnham Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TNF RECEPTOR ASSOCIATED FACTOR 3
A, B
228Homo sapiensGene Names: TRAF3 (CAP1, CRAF1)
EC: 6.3.2.-
Find proteins for Q13114 (Homo sapiens)
Go to Gene View: TRAF3
Go to UniProtKB:  Q13114
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.224 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 84.530α = 90.00
b = 84.530β = 90.00
c = 319.500γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance