2WBJ

TCR complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.249 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

T Cell-Mediated Autoimmune Disease due to Low-Affinity Crossreactivity to Common Microbial Peptides.

Harkiolaki, M.Holmes, S.L.Svendsen, P.Gregersen, J.W.Jensen, L.T.Mcmahon, R.Friese, M.A.Van Boxel, G.Etzensperger, R.Tzartos, J.S.Kranc, K.Sainsbury, S.Harlos, K.Mellins, E.D.Palace, J.Esiri, M.M.Van Der Merwe, P.A.Jones, E.Y.Fugger, L.

(2009) Immunity 30: 348

  • DOI: 10.1016/j.immuni.2009.01.009
  • Primary Citation of Related Structures:  
    2WBJ

  • PubMed Abstract: 
  • Environmental factors account for 75% of the risk of developing multiple sclerosis (MS). Numerous infections have been suspected as environmental disease triggers, but none of them has consistently been incriminated, and it is unclear how so many different infections may play a role ...

    Environmental factors account for 75% of the risk of developing multiple sclerosis (MS). Numerous infections have been suspected as environmental disease triggers, but none of them has consistently been incriminated, and it is unclear how so many different infections may play a role. We show that a microbial peptide, common to several major classes of bacteria, can induce MS-like disease in humanized mice by crossreacting with a T cell receptor (TCR) that also recognizes a peptide from myelin basic protein, a candidate MS autoantigen. Structural analysis demonstrates this crossreactivity is due to structural mimicry of a binding hotspot shared by self and microbial antigens, rather than to degenerate TCR recognition. Biophysical studies reveal that the autoreactive TCR binding affinity is markedly lower for the microbial (mimicry) peptide than for the autoantigenic peptide. Thus, these data suggest a possible explanation for the difficulty in incriminating individual infections in the development of MS.


    Organizational Affiliation

    Division of Structural Biology, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Oxford OX37BN, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN, DR ALPHA CHAINA, E194Homo sapiensMutation(s): 0 
Gene Names: HLA-DRAHLA-DRA1
UniProt & NIH Common Fund Data Resources
Find proteins for P01903 (Homo sapiens)
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Go to UniProtKB:  P01903
PHAROS:  P01903
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UniProt GroupP01903
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN, DRB1-15 BETA CHAINB, F200Homo sapiensMutation(s): 0 
Gene Names: HLA-DRB1
UniProt & NIH Common Fund Data Resources
Find proteins for P01911 (Homo sapiens)
Explore P01911 
Go to UniProtKB:  P01911
PHAROS:  P01911
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UniProt GroupP01911
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
OB TCRC, G219Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
OB TCRD, H279Homo sapiensMutation(s): 0 
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Oligosaccharides

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Entity ID: 5
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseI 5N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G22768VO
GlyCosmos:  G22768VO
GlyGen:  G22768VO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.249 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.706α = 90
b = 130.271β = 90
c = 180.22γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2012-08-22
    Changes: Database references, Derived calculations
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary