3E6F

MHC CLASS I H-2Dd Heavy chain complexed with Beta-2 Microglobulin and a variant peptide, PA9, from the Human immunodeficiency virus (BaL) envelope glycoprotein 120


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Different vaccine vectors delivering the same antigen elicit CD8+ T cell responses with distinct clonotype and epitope specificity

Honda, M.Wang, R.Kong, W.P.Kanekiyo, M.Akahata, W.Xu, L.Matsuo, K.Natarajan, K.Robinson, H.Asher, T.E.Price, D.A.Douek, D.C.Margulies, D.H.Nabel, G.J.

(2009) J.Immunol. 183: 2425-2434

  • DOI: 10.4049/jimmunol.0900581
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Prime-boost immunization with gene-based vectors has been developed to generate more effective vaccines for AIDS, malaria, and tuberculosis. Although these vectors elicit potent T cell responses, the mechanisms by which they stimulate immunity are no ...

    Prime-boost immunization with gene-based vectors has been developed to generate more effective vaccines for AIDS, malaria, and tuberculosis. Although these vectors elicit potent T cell responses, the mechanisms by which they stimulate immunity are not well understood. In this study, we show that immunization by a single gene product, HIV-1 envelope, with alternative vector combinations elicits CD8(+) cells with different fine specificities and kinetics of mobilization. Vaccine-induced CD8(+) T cells recognized overlapping third V region loop peptides. Unexpectedly, two anchor variants bound H-2D(d) better than the native sequences, and clones with distinct specificities were elicited by alternative vectors. X-ray crystallography revealed major differences in solvent exposure of MHC-bound peptide epitopes, suggesting that processed HIV-1 envelope gave rise to MHC-I/peptide conformations recognized by distinct CD8(+) T cell populations. These findings suggest that different gene-based vectors generate peptides with alternative conformations within MHC-I that elicit distinct T cell responses after vaccination.


    Organizational Affiliation

    Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
H-2 class I histocompatibility antigen, D-D alpha chain
A
274Mus musculusMutation(s): 0 
Gene Names: H2-D1
Find proteins for P01900 (Mus musculus)
Go to UniProtKB:  P01900
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA-2 MICROGLOBULIN
B
99Mus musculusMutation(s): 1 
Gene Names: B2m
Find proteins for P01887 (Mus musculus)
Go to UniProtKB:  P01887
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Envelope glycoprotein 9-residue peptide
P
9Human immunodeficiency virus type 1 group M subtype B (isolate SC)Mutation(s): 0 
Gene Names: env
Find proteins for P05878 (Human immunodeficiency virus type 1 group M subtype B (isolate SC))
Go to UniProtKB:  P05878
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.223 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 67.810α = 90.00
b = 109.515β = 90.00
c = 53.762γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
PDB_EXTRACTdata extraction
HKL-2000data collection
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2016-10-26
    Type: Structure summary
  • Version 1.3: 2017-10-25
    Type: Refinement description