5NQ1

Porcine (Sus scrofa) Major Histocompatibility Complex, class I, with human beta2 micro globulin, presenting DFEREGYSL

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.14 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.223 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Induction of influenza-specific local CD8 T-cells in the respiratory tract after aerosol delivery of vaccine antigen or virus in the Babraham inbred pig.

Tungatt, K., Dolton, G., Morgan, S.B., Attaf, M., Fuller, A., Whalley, T., Hemmink, J.D., Porter, E., Szomolay, B., Montoya, M., Hammond, J.A., Miles, J.J., Cole, D.K., Townsend, A., Bailey, M., Rizkallah, P.J., Charleston, B., Tchilian, E., Sewell, A.K.

(2018) PLoS Pathog 14: e1007017-e1007017

  • DOI: 10.1371/journal.ppat.1007017
  • Primary Citation of Related Structures:  
    5NQ1, 5NQ0, 5NQ3, 5NQ2, 5NPZ

  • PubMed Abstract: 

    • There is increasing evidence that induction of local immune responses is a key component of effective vaccines. For respiratory pathogens, for example tuberculosis and influenza, aerosol delivery is being actively explored as a method to administer v ...

    There is increasing evidence that induction of local immune responses is a key component of effective vaccines. For respiratory pathogens, for example tuberculosis and influenza, aerosol delivery is being actively explored as a method to administer vaccine antigens. Current animal models used to study respiratory pathogens suffer from anatomical disparity with humans. The pig is a natural and important host of influenza viruses and is physiologically more comparable to humans than other animal models in terms of size, respiratory tract biology and volume. It may also be an important vector in the birds to human infection cycle. A major drawback of the current pig model is the inability to analyze antigen-specific CD8+ T-cell responses, which are critical to respiratory immunity. Here we address this knowledge gap using an established in-bred pig model with a high degree of genetic identity between individuals, including the MHC (Swine Leukocyte Antigen (SLA)) locus. We developed a toolset that included long-term in vitro pig T-cell culture and cloning and identification of novel immunodominant influenza-derived T-cell epitopes. We also generated structures of the two SLA class I molecules found in these animals presenting the immunodominant epitopes. These structures allowed definition of the primary anchor points for epitopes in the SLA binding groove and established SLA binding motifs that were used to successfully predict other influenza-derived peptide sequences capable of stimulating T-cells. Peptide-SLA tetramers were constructed and used to track influenza-specific T-cells ex vivo in blood, the lungs and draining lymph nodes. Aerosol immunization with attenuated single cycle influenza viruses (S-FLU) induced large numbers of CD8+ T-cells specific for conserved NP peptides in the respiratory tract. Collectively, these data substantially increase the utility of pigs as an effective model for studying protective local cellular immunity against respiratory pathogens.

    Organizational Affiliation: 

    Systems Immunity Research Institute, Cardiff University, Cardiff, Wales, United Kingdom.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MHC class I antigenA, D276Sus scrofaMutation(s): 0 
Gene Names: SLA-1
Find proteins for B1PJV3 (Sus scrofa)
Explore B1PJV3 
Go to UniProtKB:  B1PJV3
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB, E100Homo sapiensMutation(s): 0 
Gene Names: B2M, CDABP0092, HDCMA22P
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
GTEx  ENSG00000166710
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ASP-PHE-GLU-ARG-GLU-GLY-TYR-SER-LEUC, F9unidentified influenza virusMutation(s): 0 
Find proteins for Q9Q0U8 (Influenza A virus (strain A/Goose/Guangdong/1/1996 H5N1 genotype Gs/Gd))
Explore Q9Q0U8 
Go to UniProtKB:  Q9Q0U8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download CCD File 
E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
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E
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
EDO
Query on EDO
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A, B, E
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.14 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.223 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.388α = 81.24
b = 60.288β = 67.59
c = 65.645γ = 67.94
Software Package:
Software NamePurpose
Aimlessdata scaling
DIALSdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction
PHASERphasing
xia2data reduction

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-04-25
    Type: Initial release
  • Version 1.1: 2019-05-08
    Changes: Data collection, Database references