5ZUJ

Binding and Enhanced Binding between Key Immunity Proteins TRAF6 and TIFA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Binding and Enhanced Binding between Key Immunity Proteins TRAF6 and TIFA.

Huang, W.C.Liao, J.H.Hsiao, T.C.Wei, T.W.Maestre-Reyna, M.Bessho, Y.Tsai, M.D.

(2019) Chembiochem 20: 140-146

  • DOI: 10.1002/cbic.201800436
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human tumor necrosis factor receptor associated factor (TRAF)-interacting protein, with a forkhead-associated domain (TIFA), is a key regulator of NF-κB activation. It also plays a key role in the activation of innate immunity in response to bacteria ...

    Human tumor necrosis factor receptor associated factor (TRAF)-interacting protein, with a forkhead-associated domain (TIFA), is a key regulator of NF-κB activation. It also plays a key role in the activation of innate immunity in response to bacterial infection, through heptose 1,7-bisphosphate (HBP); a metabolite of lipopolysaccharide (LPS). However, the mechanism of TIFA function is largely unexplored, except for the suggestion of interaction with TRAF6. Herein, we provide evidence for direct binding, albeit weak, between TIFA and the TRAF domain of TRAF6, and it is shown that the binding is enhanced for a rationally designed double mutant, TIFA S174Q/M179D. Enhanced binding was also demonstrated for endogenous full-length TRAF6. Furthermore, the structures of the TRAF domain complexes with the consensus TRAF-binding peptides from the C terminus of wild-type and S174Q/M179D mutant TIFA, showing salt-bridge formation between residues 177-181 of TIFA and the binding pocket residues of the TRAF domain, were solved. Taken together, the results provide direct evidence and a structural basis for the TIFA-TRAF6 interaction, and show how this important biological function can be modulated.


    Organizational Affiliation

    Institute of Biochemical Sciences, National (Taiwan) University, 1, Roosevelt Road Sec. 4, Taipei, 106, Taiwan.,Institute of Biological Chemistry, Academia Sinica, 128 Academia Road Sec. 2, Nankang, Taipei, 115, Taiwan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TNF receptor-associated factor 6
A
161Homo sapiensMutation(s): 0 
Gene Names: TRAF6 (RNF85)
EC: 2.3.2.27
Find proteins for Q9Y4K3 (Homo sapiens)
Go to Gene View: TRAF6
Go to UniProtKB:  Q9Y4K3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
peptide 170-184 from TRAF-interacting protein with FHA domain-containing protein A
I
15Homo sapiensMutation(s): 2 
Gene Names: TIFA (T2BP)
Find proteins for Q96CG3 (Homo sapiens)
Go to Gene View: TIFA
Go to UniProtKB:  Q96CG3
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.193 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 51.518α = 90.00
b = 51.518β = 90.00
c = 335.679γ = 120.00
Software Package:
Software NamePurpose
Blu-Icedata collection
PHENIXmodel building
XDSdata reduction
PHENIXrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
TaiwanMOST105-0210-01-12-01
TaiwanMOST106-0210-01-15-04
TaiwanMOST107-0210-01-19-02

Revision History 

  • Version 1.0: 2018-12-05
    Type: Initial release
  • Version 1.1: 2019-02-06
    Type: Data collection, Database references