6WCZ

CryoEM structure of full-length ZIKV NS5-hSTAT2 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for STAT2 suppression by flavivirus NS5

Boxiao, W.Stephanie, T.Kang, Z.Maria, T.S.Jian, F.Jiuwei, L.Linfeng, G.Wendan, R.Yanxiang, C.Ethan, C.V.HeaJin, H.Matthew, J.E.Sean, E.O.Adolfo, G.S.Hong, Z.Rong, H.Jikui, S.

(2020) Nat Struct Mol Biol 

  • DOI: 10.1038/s41594-020-0472-y
  • Primary Citation of Related Structures:  
    6UX2, 6WCZ

  • PubMed Abstract: 
  • Suppressing cellular signal transducers of transcription 2 (STAT2) is a common strategy that viruses use to establish infections, yet the detailed mechanism remains elusive, owing to a lack of structural information about the viral-cellular complex involved ...

    Suppressing cellular signal transducers of transcription 2 (STAT2) is a common strategy that viruses use to establish infections, yet the detailed mechanism remains elusive, owing to a lack of structural information about the viral-cellular complex involved. Here, we report the cryo-EM and crystal structures of human STAT2 (hSTAT2) in complex with the non-structural protein 5 (NS5) of Zika virus (ZIKV) and dengue virus (DENV), revealing two-pronged interactions between NS5 and hSTAT2. First, the NS5 methyltransferase and RNA-dependent RNA polymerase (RdRP) domains form a conserved interdomain cleft harboring the coiled-coil domain of hSTAT2, thus preventing association of hSTAT2 with interferon regulatory factor 9. Second, the NS5 RdRP domain also binds the amino-terminal domain of hSTAT2. Disruption of these ZIKV NS5-hSTAT2 interactions compromised NS5-mediated hSTAT2 degradation and interferon suppression, and viral infection under interferon-competent conditions. Taken together, these results clarify the mechanism underlying the functional antagonism of STAT2 by both ZIKV and DENV.


    Organizational Affiliation

    Environmental Toxicology Graduate Program, University of California, Riverside, CA, USA. jikui.song@ucr.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Signal transducer and activator of transcription 2A851Homo sapiensMutation(s): 0 
Gene Names: STAT2
Find proteins for P52630 (Homo sapiens)
Explore P52630 
Go to UniProtKB:  P52630
NIH Common Fund Data Resources
PHAROS:  P52630
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Non-structural protein 5B903Zika virusMutation(s): 0 
Gene Names: GP1A2G93_72125gpGP1A2G93_72126gpGP1
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.1.1.56 (UniProt), 2.1.1.57 (UniProt), 2.7.7.48 (UniProt)
Find proteins for Q32ZE1 (Zika virus)
Explore Q32ZE1 
Go to UniProtKB:  Q32ZE1
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth B], D [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Library of Medicine (NIH/NLM)United States1S10RR23057
National Institutes of Health/National Library of Medicine (NIH/NLM)United States1S10OD018111
National Institutes of Health/National Library of Medicine (NIH/NLM)United States1R35GM119721
National Science Foundation (NSF, United States)United StatesDBI-1338135
National Institutes of Health/National Library of Medicine (NIH/NLM)United States1R21AI147057

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-08
    Type: Initial release
  • Version 1.1: 2020-10-14
    Changes: Database references