4JQV

HLA-B*18:01 in complex with Epstein-Barr virus BZLF1-derived peptide (residues 173-180)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


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


Literature

HLA Peptide Length Preferences Control CD8+ T Cell Responses.

Rist, M.J., Theodossis, A., Croft, N.P., Neller, M.A., Welland, A., Chen, Z., Sullivan, L.C., Burrows, J.M., Miles, J.J., Brennan, R.M., Gras, S., Khanna, R., Brooks, A.G., McCluskey, J., Purcell, A.W., Rossjohn, J., Burrows, S.R.

(2013) J Immunol 191: 561-571

  • DOI: 10.4049/jimmunol.1300292
  • Primary Citation of Related Structures:  
    4JQV, 4JQX

  • PubMed Abstract: 

    • Class I HLAs generally present peptides of 8-10 aa in length, although it is unclear whether peptide length preferences are affected by HLA polymorphism. In this study, we investigated the CD8(+) T cell response to the BZLF1 Ag of EBV, which includes overlapping sequences of different size that nevertheless conform to the binding motif of the large and abundant HLA-B*44 supertype ...

    Class I HLAs generally present peptides of 8-10 aa in length, although it is unclear whether peptide length preferences are affected by HLA polymorphism. In this study, we investigated the CD8(+) T cell response to the BZLF1 Ag of EBV, which includes overlapping sequences of different size that nevertheless conform to the binding motif of the large and abundant HLA-B*44 supertype. Whereas HLA-B*18:01(+) individuals responded strongly and exclusively to the octamer peptide (173)SELEIKRY(180), HLA-B*44:03(+) individuals responded to the atypically large dodecamer peptide (169)EECDSELEIKRY(180), which encompasses the octamer peptide. Moreover, the octamer peptide bound more stably to HLA-B*18:01 than did the dodecamer peptide, whereas, conversely, HLA-B*44:03 bound only the longer peptide. Furthermore, crystal structures of these viral peptide-HLA complexes showed that the Ag-binding cleft of HLA-B*18:01 was more ideally suited to bind shorter peptides, whereas HLA-B*44:03 exhibited characteristics that favored the presentation of longer peptides. Mass spectrometric identification of > 1000 naturally presented ligands revealed that HLA-B*18:01 was more biased toward presenting shorter peptides than was HLA-B*44:03. Collectively, these data highlight a mechanism through which polymorphism within an HLA class I supertype can diversify determinant selection and immune responses by varying peptide length preferences.

    Organizational Affiliation: 

    Centre for Immunotherapy and Vaccine Development, Queensland Institute of Medical Research, Brisbane, Queensland 4029, Australia.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, B-18 alpha chainA278Homo sapiensMutation(s): 0 
Gene Names: HLA-B, HLAB
UniProt & NIH Common Fund Data Resources
Find proteins for P01889 (Homo sapiens)
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Go to UniProtKB:  P01889
PHAROS:  P01889
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UniProt GroupP01889
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB [auth C]99Homo sapiensMutation(s): 0 
Gene Names: B2M, CDABP0092, HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
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UniProt GroupP61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Trans-activator protein BZLF1C [auth B]8Human gammaherpesvirus 4Mutation(s): 0 
Gene Names: BZLF1
UniProt
Find proteins for Q3KSS8 (Epstein-Barr virus (strain GD1))
Explore Q3KSS8 
Go to UniProtKB:  Q3KSS8
Entity Groups  
UniProt GroupQ3KSS8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT
Download Ideal Coordinates CCD File 
D [auth C]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.848α = 90
b = 81.251β = 90
c = 110.892γ = 90
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-26
    Type: Initial release
  • Version 1.1: 2013-07-17
    Changes: Database references