6FLM

Crystal structure of the human TRIM25 PRYSPRY domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 

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:  
    5NT1, 5NT2, 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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin/ISG15 ligase TRIM25A, B, C199Homo sapiensMutation(s): 0 
Gene Names: TRIM25, EFP, RNF147, ZNF147
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14258 (Homo sapiens)
Explore Q14258 
Go to UniProtKB:  Q14258
PHAROS:  Q14258
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14258
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 152.75α = 90
b = 152.75β = 90
c = 68.96γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
SHARPphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data
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