4G8G

Crystal Structure of C12C TCR-HA B2705-KK10


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

A Molecular Basis for the Control of Preimmune Escape Variants by HIV-Specific CD8(+) T Cells.

Ladell, K.Hashimoto, M.Iglesias, M.C.Wilmann, P.G.McLaren, J.E.Gras, S.Chikata, T.Kuse, N.Fastenackels, S.Gostick, E.Bridgeman, J.S.Venturi, V.Arkoub, Z.A.Agut, H.van Bockel, D.J.Almeida, J.R.Douek, D.C.Meyer, L.Venet, A.Takiguchi, M.Rossjohn, J.Price, D.A.Appay, V.

(2013) Immunity 38: 425-436

  • DOI: https://doi.org/10.1016/j.immuni.2012.11.021
  • Primary Citation of Related Structures:  
    4G8G, 4G8I, 4G9D, 4G9F

  • PubMed Abstract: 

    The capacity of the immune system to adapt to rapidly evolving viruses is a primary feature of effective immunity, yet its molecular basis is unclear. Here, we investigated protective HIV-1-specific CD8+ T cell responses directed against the immunodominant p24 Gag-derived epitope KK10 (KRWIILGLNK263-272) presented by human leukocyte antigen (HLA)-B∗2705. We found that cross-reactive CD8+ T cell clonotypes were mobilized to counter the rapid emergence of HIV-1 variants that can directly affect T cell receptor (TCR) recognition. These newly recruited clonotypes expressed TCRs that engaged wild-type and mutant KK10 antigens with similar affinities and almost identical docking modes, thereby accounting for their antiviral efficacy in HLA-B∗2705+ individuals. A protective CD8+ T cell repertoire therefore encompasses the capacity to control TCR-accessible mutations, ultimately driving the development of more complex viral escape variants that disrupt antigen presentation.


  • Organizational Affiliation

    Institute of Infection and Immunity, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, Wales, UK.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, B-27 alpha chain276Homo sapiensMutation(s): 0 
Gene Names: HLA-BHLAB
UniProt & NIH Common Fund Data Resources
Find proteins for P01889 (Homo sapiens)
Explore P01889 
Go to UniProtKB:  P01889
PHAROS:  P01889
GTEx:  ENSG00000234745 
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UniProt GroupP01889
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin100Homo 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
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
P2410Human immunodeficiency virus 1Mutation(s): 0 
UniProt
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B (isolate BH10))
Explore P03366 
Go to UniProtKB:  P03366
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UniProt GroupP03366
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
alpha chain C12C TCR204Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
beta chain C12C TCR248Homo sapiensMutation(s): 0 
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.682α = 90
b = 70.32β = 98.77
c = 107.767γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
Blu-Icedata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-03-20
    Type: Initial release
  • Version 1.1: 2013-04-10
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Advisory, Refinement description
  • Version 1.3: 2018-01-24
    Changes: Refinement description
  • Version 1.4: 2018-04-25
    Changes: Data collection, Structure summary
  • Version 1.5: 2023-09-13
    Changes: Advisory, Data collection, Database references, Refinement description