7KGS

Crystal Structure of HLA-A*0201 in complex with SARS-CoV-2 N138-146


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 

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Literature

The presentation of SARS-CoV-2 peptides by the common HLA-A*02:01 molecule.

Szeto, C.Chatzileontiadou, D.S.M.Nguyen, A.T.Sloane, H.Lobos, C.A.Jayasinghe, D.Halim, H.Smith, C.Riboldi-Tunnicliffe, A.Grant, E.J.Gras, S.

(2021) iScience 24: 102096-102096

  • DOI: 10.1016/j.isci.2021.102096
  • Primary Citation of Related Structures:  
    7KGO, 7KGP, 7KGQ, 7KGR, 7KGS, 7KGT

  • PubMed Abstract: 
  • CD8+ T cells are crucial for anti-viral immunity; however, understanding T cell responses requires the identification of epitopes presented by human leukocyte antigens (HLA). To date, few SARS-CoV-2-specific CD8+ T cell epitopes have been described. Internal viral proteins are typically more conserved than surface proteins and are often the target of CD8+ T cells ...

    CD8+ T cells are crucial for anti-viral immunity; however, understanding T cell responses requires the identification of epitopes presented by human leukocyte antigens (HLA). To date, few SARS-CoV-2-specific CD8+ T cell epitopes have been described. Internal viral proteins are typically more conserved than surface proteins and are often the target of CD8+ T cells. Therefore, we have characterized eight peptides derived from the internal SARS-CoV-2 nucleocapsid protein predicted to bind HLA-A 02:01, the most common HLA molecule in the global population. We determined not all peptides could form a complex with HLA-A 02:01, and the six crystal structures determined revealed that some peptides adopted a mobile conformation. We therefore provide a molecular understanding of SARS-CoV-2 CD8+ T cell epitopes. Furthermore, we show that there is limited pre-existing CD8+ T cell response toward these epitopes in unexposed individuals. Together, these data show that SARS-CoV-2 nucleocapsid might not contain potent epitopes restricted to HLA-A 02:01.


    Organizational Affiliation

    Australian Research Council Centre of Excellence for Advanced Molecular Imaging, Monash University, Clayton, VIC 3800, Australia.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MHC class I antigenA278Homo sapiensMutation(s): 0 
Gene Names: HLA-A
UniProt
Find proteins for Q861F7 (Homo sapiens)
Explore Q861F7 
Go to UniProtKB:  Q861F7
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB99Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
NucleoproteinC9Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: N
UniProt
Find proteins for P0DTC9 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC9 
Go to UniProtKB:  P0DTC9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CD
Query on CD

Download Ideal Coordinates CCD File 
D [auth A], E [auth A]CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
F [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.028α = 90
b = 78.903β = 90
c = 110.604γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PHASERphasing
BUSTERrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)Australia1110429
National Health and Medical Research Council (NHMRC, Australia)Australia1159272

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-20
    Type: Initial release
  • Version 1.1: 2021-08-11
    Changes: Database references