8WCM

NSs filament formation determines RVFV pathogenesis


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.94 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Rift Valley fever virus coordinates the assembly of a programmable E3 ligase to promote viral replication.

Li, H.Zhang, Y.Rao, G.Zhang, C.Guan, Z.Huang, Z.Li, S.Lozach, P.Y.Cao, S.Peng, K.

(2024) Cell 

  • DOI: https://doi.org/10.1016/j.cell.2024.09.008
  • Primary Citation of Related Structures:  
    8WCM

  • PubMed Abstract: 

    Viruses encode strategies to degrade cellular proteins to promote infection and pathogenesis. Here, we revealed that the non-structural protein NSs of Rift Valley fever virus forms a filamentous E3 ligase to trigger efficient degradation of targeted proteins. Reconstitution in vitro and cryoelectron microscopy analysis with the 2.9-Å resolution revealed that NSs forms right-handed helical fibrils. The NSs filamentous oligomers associate with the cellular FBXO3 to form a remodeled E3 ligase. The NSs-FBXO3 E3 ligase targets the cellular TFIIH complex through the NSs-P62 interaction, leading to ubiquitination and proteasome-dependent degradation of the TFIIH complex. NSs-FBXO3-triggered TFIIH complex degradation resulted in robust inhibition of antiviral immunity and promoted viral pathogenesis in vivo. Furthermore, it is demonstrated that NSs can be programmed to target additional proteins for proteasome-dependent degradation, serving as a versatile targeted protein degrader. These results showed that a virulence factor forms a filamentous and programmable degradation machinery to induce organized degradation of cellular proteins to promote viral infection.


  • Organizational Affiliation

    State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Antiviral Research, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Non-structural protein NS-S
A, B
274Rift Valley fever virusMutation(s): 0 
Gene Names: NSs
UniProt
Find proteins for A2SZZ6 (Rift valley fever virus)
Explore A2SZZ6 
Go to UniProtKB:  A2SZZ6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA2SZZ6
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.94 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.18.2_3874:

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Science and Technology (MoST, China)China2022YFC2303300

Revision History  (Full details and data files)

  • Version 1.0: 2024-09-18
    Type: Initial release
  • Version 1.1: 2024-11-06
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2024-11-13
    Changes: Data collection, Database references