3VCL

Crystal Structure of HLA-B7 with the HCMV pp65 peptide RPHERNGFTVL

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history. 

Literature

The impact of a large and frequent deletion in the human TCR beta locus on antiviral immunity

Brennan, R.M., Petersen, J., Neller, M.A., Miles, J.J., Burrows, J.M., Smith, C., McCluskey, J., Khanna, R., Rossjohn, J., Burrows, S.R.

(2012) J.Immunol. 188: 2742-2748

  • DOI: 10.4049/jimmunol.1102675

  • PubMed Abstract: 

    • The TCR plays a critical role in recognizing intracellular pathogens and initiating pathways leading to the destruction of infected cells by the immune system. Although genetic variability is known to greatly impact on the human immune system and the ...

    The TCR plays a critical role in recognizing intracellular pathogens and initiating pathways leading to the destruction of infected cells by the immune system. Although genetic variability is known to greatly impact on the human immune system and the outcome of infection, the influence of sequence variation leading to the inactivation or deletion of TCR gene segments is unknown. To investigate this issue, we examined the CD8(+) T cell response to an HLA-B7-restricted epitope ((265)RPHERNGFTVL(275)) from the pp65 Ag of human CMV that was highly biased and frequently dominated by a public TCR β-chain encoded by the variable gene segment TRBV4-3. Approximately 40% of humans lack T cells expressing TRBV4-3 because of a 21.5-kb insertion/deletion polymorphism, but these individuals remain responsive to this epitope, using a diverse T cell repertoire characterized by private TCR usage. Although most residues within the bulged 11-mer peptide were accessible for TCR contact, the public and private TCRs showed distinct patterns of sensitivity to amino acid substitution at different positions within the peptide, thereby suggesting that the repertoire diversity generated in the absence of the dominant public TRBV4-3(+) TCR could lead to better protection from viral escape mutation. Thus, variation in the size of the TRBV repertoire clearly contributes toward interindividual variability in immune responses and is presumably maintained in many ethnic groups to enhance the diversity of Ag-specific T cell responses.

    Organizational Affiliation: 

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, B-7 alpha chain
A
275Homo sapiensMutation(s): 0 
Gene Names: HLA-B (HLAB)
Find proteins for P01889 (Homo sapiens)
Go to Gene View: HLA-B
Go to UniProtKB:  P01889
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
99Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
peptide from Tegument protein pp65
C
11Human cytomegalovirus (strain Merlin)Mutation(s): 0 
Gene Names: UL83
Find proteins for Q6SW59 (Human cytomegalovirus (strain Merlin))
Go to UniProtKB:  Q6SW59
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL
Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
NI
Query on NI
Download SDF File 
Download CCD File 
A, B
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.184 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 65.786α = 90.00
b = 65.786β = 90.00
c = 237.107γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement
PHASERphasing
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots


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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-11-21
    Type: Initial release