3M0D

Crystal structure of the TRAF1:TRAF2:cIAP2 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structures of the TRAF2: cIAP2 and the TRAF1: TRAF2: cIAP2 complexes: affinity, specificity, and regulation.

Zheng, C.Kabaleeswaran, V.Wang, Y.Cheng, G.Wu, H.

(2010) Mol.Cell 38: 101-113

  • DOI: 10.1016/j.molcel.2010.03.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • TRAF1/2 and cIAP1/2 are members of the TNF receptor-associated factor (TRAF) and the inhibitor of apoptosis (IAP) families, respectively. They are critical for canonical and noncanonical NF-kappaB signaling pathways. Here, we report the crystal struc ...

    TRAF1/2 and cIAP1/2 are members of the TNF receptor-associated factor (TRAF) and the inhibitor of apoptosis (IAP) families, respectively. They are critical for canonical and noncanonical NF-kappaB signaling pathways. Here, we report the crystal structures of the TRAF2: cIAP2 and the TRAF1: TRAF2: cIAP2 complexes. A TRAF2 trimer interacts with one cIAP2 both in the crystal and in solution. Two chains of the TRAF2 trimer directly contact cIAP2, and key residues at the interface are confirmed by mutagenesis. TRAF1 and TRAF2 preferentially form the TRAF1: (TRAF2)(2) heterotrimer, which interacts with cIAP2 more strongly than TRAF2 alone. In contrast, TRAF1 alone interacts very weakly with cIAP2. Surprisingly, TRAF1 and one chain of TRAF2 in the TRAF1: (TRAF2)(2): cIAP2 ternary complex mediate interaction with cIAP2. Because TRAF1 is upregulated by many stimuli, it may modulate the interaction of TRAF2 with cIAP1/2, which explains regulatory roles of TRAF1 in TNF signaling.


    Organizational Affiliation

    Weill Medical College, Cornell University, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TNF receptor-associated factor 2
A, B
66Homo sapiensMutation(s): 0 
Gene Names: TRAF2 (TRAP3)
EC: 2.3.2.27
Find proteins for Q12933 (Homo sapiens)
Go to Gene View: TRAF2
Go to UniProtKB:  Q12933
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TNF receptor-associated factor 1
C
65Homo sapiensMutation(s): 0 
Gene Names: TRAF1 (EBI6)
Find proteins for Q13077 (Homo sapiens)
Go to Gene View: TRAF1
Go to UniProtKB:  Q13077
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Baculoviral IAP repeat-containing protein 3
D
75Homo sapiensMutation(s): 0 
Gene Names: BIRC3 (API2, MIHC, RNF49)
EC: 2.3.2.27
Find proteins for Q13489 (Homo sapiens)
Go to Gene View: BIRC3
Go to UniProtKB:  Q13489
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.197 
  • Space Group: I 41
Unit Cell:
Length (Å)Angle (°)
a = 91.867α = 90.00
b = 91.867β = 90.00
c = 88.702γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
PHASERphasing
SCALEPACKdata scaling
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance