CryoEM structure of non-structural protein 1 tetramer from ZIKA virus

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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The step-by-step assembly mechanism of secreted flavivirus NS1 tetramer and hexamer captured at atomic resolution.

Pan, Q.Jiao, H.Zhang, W.Chen, Q.Zhang, G.Yu, J.Zhao, W.Hu, H.

(2024) Sci Adv 10: eadm8275-eadm8275

  • DOI: https://doi.org/10.1126/sciadv.adm8275
  • Primary Citation of Related Structures:  
    8WBB, 8WBC, 8WBD, 8WBE, 8WBF, 8WBG, 8WBH

  • PubMed Abstract: 

    Flaviviruses encode a conserved, membrane-associated nonstructural protein 1 (NS1) with replication and immune evasion functions. The current knowledge of secreted NS1 (sNS1) oligomers is based on several low-resolution structures, thus hindering the development of drugs and vaccines against flaviviruses. Here, we revealed that recombinant sNS1 from flaviviruses exists in a dynamic equilibrium of dimer-tetramer-hexamer states. Two DENV4 hexameric NS1 structures and several tetrameric NS1 structures from multiple flaviviruses were solved at atomic resolution by cryo-EM. The stacking of the tetrameric NS1 and hexameric NS1 is facilitated by the hydrophobic β-roll and connector domains. Additionally, a triacylglycerol molecule located within the central cavity may play a role in stabilizing the hexamer. Based on differentiated interactions between the dimeric NS1, two distinct hexamer models (head-to-head and side-to-side hexamer) and the step-by-step assembly mechanisms of NS1 dimer into hexamer were proposed. We believe that our study sheds light on the understanding of the NS1 oligomerization and contributes to NS1-based therapies.

  • Organizational Affiliation

    Kobilka Institute of Innovative Drug Discovery, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Shenzhen, Guangdong 518172, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Genome polyproteinA,
C [auth a],
D [auth b]
393dengue virus type 4Mutation(s): 0 
Find proteins for A0A1V0E2B5 (Zika virus)
Explore A0A1V0E2B5 
Go to UniProtKB:  A0A1V0E2B5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1V0E2B5
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Other governmentJCYJ20210324131802008

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-22
    Type: Initial release