6UX2

Crystal structure of ZIKV RdRp in complex with STAT2

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.243 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structural basis for STAT2 suppression by flavivirus NS5.

Wang, B., Thurmond, S., Zhou, K., Sanchez-Aparicio, M.T., Fang, J., Lu, J., Gao, L., Ren, W., Cui, Y., Veit, E.C., Hong, H., Evans, M.J., O'Leary, S.E., Garcia-Sastre, A., Zhou, Z.H., Hai, R., Song, J.

(2020) Nat Struct Mol Biol 27: 875-885

  • DOI: https://doi.org/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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Signal transducer and activator of transcription 2713Homo sapiensMutation(s): 0 
Gene Names: STAT2
UniProt & NIH Common Fund Data Resources
Find proteins for P52630 (Homo sapiens)
Explore P52630 
Go to UniProtKB:  P52630
PHAROS:  P52630
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP52630
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nonstructural Protein 5631Zika virusMutation(s): 0 
EC: 3.4.21.91 (PDB Primary Data), 3.6.1.15 (PDB Primary Data), 3.6.4.13 (PDB Primary Data), 2.1.1.56 (PDB Primary Data), 2.1.1.57 (PDB Primary Data), 2.7.7.48 (PDB Primary Data)
UniProt
Find proteins for Q32ZE1 (Zika virus)
Explore Q32ZE1 
Go to UniProtKB:  Q32ZE1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ32ZE1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.243 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.113α = 90
b = 124.7β = 109.392
c = 84.783γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United States1R21AI147057

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-08
    Type: Initial release
  • Version 1.1: 2020-08-12
    Changes: Database references
  • Version 1.2: 2020-08-26
    Changes: Database references
  • Version 1.3: 2020-10-21
    Changes: Database references