7JTL

Structure of SARS-CoV-2 ORF8 accessory protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of SARS-CoV-2 ORF8, a rapidly evolving coronavirus protein implicated in immune evasion.

Flower, T.G.Buffalo, C.Z.Hooy, R.M.Allaire, M.Ren, X.Hurley, J.H.

(2020) Biorxiv 

  • DOI: 10.1101/2020.08.27.270637
  • Primary Citation of Related Structures:  
    7JTL

  • PubMed Abstract: 
  • The molecular basis for the severity and rapid spread of the COVID-19 disease caused by SARS-CoV-2 is largely unknown. ORF8 is a rapidly evolving accessory protein that has been proposed to interfere with immune responses. The crystal structure of SA ...

    The molecular basis for the severity and rapid spread of the COVID-19 disease caused by SARS-CoV-2 is largely unknown. ORF8 is a rapidly evolving accessory protein that has been proposed to interfere with immune responses. The crystal structure of SARS-CoV-2 ORF8 was determined at 2.04 Å resolution by x-ray crystallography. The structure reveals a ~60 residue core similar to SARS-CoV ORF7a with the addition of two dimerization interfaces unique to SARS-CoV-2 ORF8. A covalent disulfide-linked dimer is formed through an N-terminal sequence specific to SARS-CoV-2, while a separate non-covalent interface is formed by another SARS-CoV-2-specific sequence, 73 YIDI 76 . Together the presence of these interfaces shows how SARS-CoV-2 ORF8 can form unique large-scale assemblies not possible for SARS-CoV, potentially mediating unique immune suppression and evasion activities.


    Organizational Affiliation

    Biochemistry Research Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada. Electronic address: vogel@ucalgary.ca.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nonstructural protein NS8AB107Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: 8
Find proteins for P0DTC8 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC8 
Go to UniProtKB:  P0DTC8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.224 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.258α = 90
b = 44.258β = 90
c = 264.111γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR37 AI112442
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesF32 GM125209

Revision History 

  • Version 1.0: 2020-08-26
    Type: Initial release
  • Version 1.1: 2020-09-09
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.2: 2020-09-16
    Changes: Database references