4CVX

COMPLEX OF A B2 CHICKEN MHC CLASS I MOLECULE AND A 9MER CHICKEN PEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.238 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Expression levels of MHC class I molecules are inversely correlated with promiscuity of peptide binding.

Chappell, P.Meziane, e.l..K.Harrison, M.Magiera, L.Hermann, C.Mears, L.Wrobel, A.G.Durant, C.Nielsen, L.L.Buus, S.Ternette, N.Mwangi, W.Butter, C.Nair, V.Ahyee, T.Duggleby, R.Madrigal, A.Roversi, P.Lea, S.M.Kaufman, J.

(2015) Elife 4: e05345-e05345

  • DOI: https://doi.org/10.7554/eLife.05345
  • Primary Citation of Related Structures:  
    2YEZ, 4CVX, 4CVZ, 4CW1, 4D0B, 4D0C, 4D0D

  • PubMed Abstract: 

    Highly polymorphic major histocompatibility complex (MHC) molecules are at the heart of adaptive immune responses, playing crucial roles in many kinds of disease and in vaccination. We report that breadth of peptide presentation and level of cell surface expression of class I molecules are inversely correlated in both chickens and humans. This relationship correlates with protective responses against infectious pathogens including Marek's disease virus leading to lethal tumours in chickens and human immunodeficiency virus infection progressing to AIDS in humans. We propose that differences in peptide binding repertoire define two groups of MHC class I molecules strategically evolved as generalists and specialists for different modes of pathogen resistance. We suggest that differences in cell surface expression level ensure the development of optimal peripheral T cell responses. The inverse relationship of peptide repertoire and expression is evidently a fundamental property of MHC molecules, with ramifications extending beyond immunology and medicine to evolutionary biology and conservation.


  • Organizational Affiliation

    Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MHC CLASS I ALPHA CHAIN 2
A, D
310Gallus gallusMutation(s): 0 
UniProt
Find proteins for O46789 (Gallus gallus)
Explore O46789 
Go to UniProtKB:  O46789
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO46789
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-2-MICROGLOBULIN
B, E
98Gallus gallusMutation(s): 0 
UniProt
Find proteins for P21611 (Gallus gallus)
Explore P21611 
Go to UniProtKB:  P21611
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21611
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
SELF-PEPTIDE
C, F
9Gallus gallusMutation(s): 0 
UniProt
Find proteins for Q5ZJG4 (Gallus gallus)
Explore Q5ZJG4 
Go to UniProtKB:  Q5ZJG4
Entity Groups  
UniProt GroupQ5ZJG4
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.238 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 173.85α = 90
b = 173.85β = 90
c = 87.51γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2019-02-27
    Changes: Data collection, Database references, Other
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Other, Refinement description