1LP9

Xenoreactive complex AHIII 12.2 TCR bound to p1049/HLA-A2.1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

A correlation between TCR Valpha docking on MHC and CD8 dependence: implications for T cell selection.

Buslepp, J.Wang, H.Biddison, W.E.Appella, E.Collins, E.J.

(2003) Immunity 19: 595-606

  • DOI: https://doi.org/10.1016/s1074-7613(03)00269-3
  • Primary Citation of Related Structures:  
    1LP9

  • PubMed Abstract: 

    T cell receptors (TCR) adopt a similar orientation when binding with major histocompatibility complex (MHC) molecules, yet the biological mechanism that generates this similar TCR orientation remains obscure. We show here the cocrystallographic structure of a mouse TCR bound to a human MHC molecule not seen by the TCR during thymic development. The orientation of this xenoreactive murine TCR atop human MHC deviates from the typical orientation more than any previously determined TCR/MHC structure. This unique orientation is solely due to the placement of the TCR Valpha domain on the MHC. In light of new information provided by this structure, we have reanalyzed the existing TCR/MHC cocrystal structures and discovered unique features of TCR Valpha domain position on class I MHC that correlate with CD8 dependence. Finally, we propose that the orientation seen in TCR recognition of MHC is a consequence of selection during T cell development.


  • Organizational Affiliation

    Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-2 alpha chainA,
F [auth H]
275Homo sapiensMutation(s): 0 
Gene Names: HLA-A*0201
UniProt & NIH Common Fund Data Resources
Find proteins for P04439 (Homo sapiens)
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Go to UniProtKB:  P04439
PHAROS:  P04439
GTEx:  ENSG00000206503 
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UniProt GroupP04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulinB,
G [auth I]
100Homo sapiensMutation(s): 0 
Gene Names: B2M
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
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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
self-peptide P1049C,
H [auth J]
9N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPA0 (Homo sapiens)
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Go to UniProtKB:  Q9NPA0
PHAROS:  Q9NPA0
GTEx:  ENSG00000134153 
Entity Groups  
UniProt GroupQ9NPA0
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
T-cell Receptor alpha chainD [auth E],
I [auth L]
194Mus musculusMutation(s): 0 
UniProt
Find proteins for P01849 (Mus musculus)
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Go to UniProtKB:  P01849
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UniProt GroupP01849
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  • Reference Sequence
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
T-cell Receptor beta chainE [auth F],
J [auth M]
238Mus musculusMutation(s): 0 
UniProt
Find proteins for P04213 (Mus musculus)
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Go to UniProtKB:  P04213
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UniProt GroupP04213
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.708α = 90
b = 84.469β = 92.13
c = 121.336γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-11
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2022-12-21
    Changes: Database references, Derived calculations
  • Version 1.4: 2023-09-20
    Changes: Data collection, Refinement description