1FLL

MOLECULAR BASIS FOR CD40 SIGNALING MEDIATED BY TRAF3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.173 

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 U S A 97: 10395-10399

  • Structures With Same Primary Citation

  • 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 3A, B228Homo sapiensMutation(s): 0 
Gene Names: TRAF3CAP1CRAF1
EC: 2.3.2.27
Find proteins for Q13114 (Homo sapiens)
Explore Q13114 
Go to UniProtKB:  Q13114
NIH Common Fund Data Resources
PHAROS  Q13114
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
B-CELL SURFACE ANTIGEN CD40X, Y21N/AMutation(s): 2 
Find proteins for P25942 (Homo sapiens)
Explore P25942 
Go to UniProtKB:  P25942
NIH Common Fund Data Resources
PHAROS  P25942
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.173 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.76α = 90
b = 83.76β = 90
c = 212.57γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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