6FLN

Crystal structure of the human TRIM25 coiled-coil and PRYSPRY domains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.287 
  • R-Value Observed: 0.289 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Molecular mechanism of influenza A NS1-mediated TRIM25 recognition and inhibition.

Koliopoulos, M.G.Lethier, M.van der Veen, A.G.Haubrich, K.Hennig, J.Kowalinski, E.Stevens, R.V.Martin, S.R.Reis E Sousa, C.Cusack, S.Rittinger, K.

(2018) Nat Commun 9: 1820-1820

  • DOI: 10.1038/s41467-018-04214-8
  • Primary Citation of Related Structures:  
    5NT2, 5NT1, 6FLM, 6FLN

  • PubMed Abstract: 
  • RIG-I is a viral RNA sensor that induces the production of type I interferon (IFN) in response to infection with a variety of viruses. Modification of RIG-I with K63-linked poly-ubiquitin chains, synthesised by TRIM25, is crucial for activation of the RIG-I/MAVS signalling pathway ...

    RIG-I is a viral RNA sensor that induces the production of type I interferon (IFN) in response to infection with a variety of viruses. Modification of RIG-I with K63-linked poly-ubiquitin chains, synthesised by TRIM25, is crucial for activation of the RIG-I/MAVS signalling pathway. TRIM25 activity is targeted by influenza A virus non-structural protein 1 (NS1) to suppress IFN production and prevent an efficient host immune response. Here we present structures of the human TRIM25 coiled-coil-PRYSPRY module and of complexes between the TRIM25 coiled-coil domain and NS1. These structures show that binding of NS1 interferes with the correct positioning of the PRYSPRY domain of TRIM25 required for substrate ubiquitination and provide a mechanistic explanation for how NS1 suppresses RIG-I ubiquitination and hence downstream signalling. In contrast, the formation of unanchored K63-linked poly-ubiquitin chains is unchanged by NS1 binding, indicating that RING dimerisation of TRIM25 is not affected by NS1.


    Organizational Affiliation

    Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK. katrin.rittinger@crick.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin/ISG15 ligase TRIM25A, B, C [auth E]445Homo sapiensMutation(s): 0 
Gene Names: TRIM25EFPRNF147ZNF147
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (PDB Primary Data)
Find proteins for Q14258 (Homo sapiens)
Explore Q14258 
Go to UniProtKB:  Q14258
NIH Common Fund Data Resources
PHAROS:  Q14258
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.287 
  • R-Value Observed: 0.289 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.92α = 90
b = 89.92β = 90
c = 827.09γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
ERCFrance322586

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-23
    Type: Initial release