5NT2

Complex of influenza A NS1 with TRIM25 coiled coil domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.259 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.270 

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:  

  • 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 th ...

    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

    European Molecular Biology Laboratory, 71 Avenue des Martyrs, 38042, Grenoble, Cedex 9, France.,Structural and Computational Biology Unit, EMBL Heidelberg, Meyerhofstra├če 1, 69117, Heidelberg, Germany.,Structural Biology Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.,Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK. katrin.rittinger@crick.ac.uk.,Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.,Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Non-structural protein 1
F, C, D, E
233Influenza A virus (strain A/Puerto Rico/8/1934 H1N1)Mutation(s): 3 
Gene Names: NS
Find proteins for P03496 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1))
Go to UniProtKB:  P03496
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin/ISG15 ligase TRIM25
I, A, V, N
193Homo sapiensMutation(s): 0 
Gene Names: TRIM25 (EFP, RNF147, ZNF147)
EC: 6.3.2.n3
Find proteins for Q14258 (Homo sapiens)
Go to Gene View: TRIM25
Go to UniProtKB:  Q14258
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.259 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.270 
  • 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
PHASERphasing
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The Francis Crick InstituteUnited KingdomFC001142

Revision History 

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