4P5K

Structural Basis of Chronic Beryllium Disease: Bridging the Gap Between Allergy and Autoimmunity


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of chronic beryllium disease: linking allergic hypersensitivity and autoimmunity.

Clayton, G.M.Wang, Y.Crawford, F.Novikov, A.Wimberly, B.T.Kieft, J.S.Falta, M.T.Bowerman, N.A.Marrack, P.Fontenot, A.P.Dai, S.Kappler, J.W.

(2014) Cell 158: 132-142

  • DOI: 10.1016/j.cell.2014.04.048
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • T-cell-mediated hypersensitivity to metal cations is common in humans. How the T cell antigen receptor (TCR) recognizes these cations bound to a major histocompatibility complex (MHC) protein and self-peptide is unknown. Individuals carrying the MHCI ...

    T-cell-mediated hypersensitivity to metal cations is common in humans. How the T cell antigen receptor (TCR) recognizes these cations bound to a major histocompatibility complex (MHC) protein and self-peptide is unknown. Individuals carrying the MHCII allele, HLA-DP2, are at risk for chronic beryllium disease (CBD), a debilitating inflammatory lung condition caused by the reaction of CD4 T cells to inhaled beryllium. Here, we show that the T cell ligand is created when a Be(2+) cation becomes buried in an HLA-DP2/peptide complex, where it is coordinated by both MHC and peptide acidic amino acids. Surprisingly, the TCR does not interact with the Be(2+) itself, but rather with surface changes induced by the firmly bound Be(2+) and an accompanying Na(+) cation. Thus, CBD, by creating a new antigen by indirectly modifying the structure of preexisting self MHC-peptide complex, lies on the border between allergic hypersensitivity and autoimmunity.


    Organizational Affiliation

    Howard Hughes Medical Institute, National Jewish Health, Denver, CO 80206, USA; Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA; Department of Immunology and Microbiology, University of Colorado Denver School of Medicine, Aurora, CO 80045, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class II histocompatibility antigen, DP alpha 1 chain
A, D
183Homo sapiensMutation(s): 0 
Gene Names: HLA-DPA1 (HLA-DP1A, HLASB)
Find proteins for P20036 (Homo sapiens)
Go to Gene View: HLA-DPA1
Go to UniProtKB:  P20036
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RAS peptide,HLA class II histocompatibility antigen, DP beta 1 chain
B, E
212Homo sapiensMutation(s): 0 
Gene Names: HLA-DPB1 (HLA-DP1B)
Find proteins for P04440 (Homo sapiens)
Go to Gene View: HLA-DPB1
Go to UniProtKB:  P04440
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.221 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 182.779α = 90.00
b = 68.738β = 105.72
c = 71.133γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-01-21
    Type: Initial release
  • Version 1.1: 2017-11-22
    Type: Derived calculations, Refinement description, Source and taxonomy
  • Version 1.2: 2018-03-21
    Type: Data collection