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

    Molecular Structure of Cell Signalling 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