1PY9

The crystal structure of an autoantigen in multiple sclerosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The crystal structure of myelin oligodendrocyte glycoprotein, a key autoantigen in multiple sclerosis

Clements, C.S.Reid, H.H.Beddoe, T.Tynan, F.E.Perugini, M.A.Johns, T.G.Bernard, C.C.Rossjohn, J.

(2003) Proc Natl Acad Sci U S A 100: 11059-11064

  • DOI: 10.1073/pnas.1833158100
  • Primary Citation of Related Structures:  
    1PY9

  • PubMed Abstract: 
  • Myelin oligodendrocyte glycoprotein (MOG) is a key CNS-specific autoantigen for primary demyelination in multiple sclerosis. Although the disease-inducing role of MOG has been established, its precise function in the CNS remains obscure. To gain new insights into the physiological and immunopathological role of MOG, we determined the 1 ...

    Myelin oligodendrocyte glycoprotein (MOG) is a key CNS-specific autoantigen for primary demyelination in multiple sclerosis. Although the disease-inducing role of MOG has been established, its precise function in the CNS remains obscure. To gain new insights into the physiological and immunopathological role of MOG, we determined the 1.8-A crystal structure of the MOG extracellular domain (MOGED). MOGED adopts a classical Ig (Ig variable domain) fold that was observed to form an antiparallel head-to-tail dimer. A dimeric form of native MOG was observed, and MOGED was also shown to dimerize in solution, consistent with the view of MOG acting as a homophilic adhesion receptor. The MOG35-55 peptide, a major encephalitogenic determinant recognized by both T cells and demyelinating autoantibodies, is partly occluded within the dimer interface. The structure of this key autoantigen suggests a relationship between the dimeric form of MOG within the myelin sheath and a breakdown of immunological tolerance to MOG that is observed in multiple sclerosis.


    Organizational Affiliation

    Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3168, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Myelin-oligodendrocyte glycoproteinA116Mus musculusMutation(s): 0 
Gene Names: Mog
Membrane Entity: Yes 
UniProt
Find proteins for Q61885 (Mus musculus)
Explore Q61885 
Go to UniProtKB:  Q61885
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ61885
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.201 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.72α = 90
b = 65.72β = 90
c = 67.58γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-09-30
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2019-12-11
    Changes: Data collection