5NT2

Complex of influenza A NS1 with TRIM25 coiled coil domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.26 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.272 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 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: https://doi.org/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. 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.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Non-structural protein 1A [auth F],
B [auth C],
C [auth D],
D [auth E]
233Influenza A virus (A/Puerto Rico/8/1934(H1N1))Mutation(s): 4 
Gene Names: NS
UniProt
Find proteins for P03496 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1))
Explore P03496 
Go to UniProtKB:  P03496
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03496
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
E3 ubiquitin/ISG15 ligase TRIM25E [auth I],
F [auth A],
G [auth V],
H [auth N]
193Homo sapiensMutation(s): 1 
Gene Names: TRIM25EFPRNF147ZNF147
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
GTEx:  ENSG00000121060 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14258
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.26 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.272 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.257α = 100.04
b = 76.296β = 93.71
c = 92.072γ = 111.14
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The Francis Crick InstituteUnited KingdomFC001142

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-23
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description