1PKO

Myelin Oligodendrocyte Glycoprotein (MOG)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insights into the antigenicity of myelin oligodendrocyte glycoprotein

Breithaupt, C.Schubart, A.Zander, H.Skerra, A.Huber, R.Linington, C.Jacob, U.

(2003) Proc Natl Acad Sci U S A 100: 9446-9451

  • DOI: https://doi.org/10.1073/pnas.1133443100
  • Primary Citation of Related Structures:  
    1PKO, 1PKQ

  • PubMed Abstract: 

    Multiple sclerosis is a chronic disease of the central nervous system (CNS) characterized by inflammation, demyelination, and axonal loss. The immunopathogenesis of demyelination in multiple sclerosis involves an autoantibody response to myelin oligodendrocyte glycoprotein (MOG), a type I transmembrane protein located at the surface of CNS myelin. Here we present the crystal structures of the extracellular domain of MOG (MOGIgd) at 1.45-A resolution and the complex of MOGIgd with the antigen-binding fragment (Fab) of the MOG-specific demyelinating monoclonal antibody 8-18C5 at 3.0-A resolution. MOGIgd adopts an IgV like fold with the A'GFCC'C" sheet harboring a cavity similar to the one used by the costimulatory molecule B7-2 to bind its ligand CTLA4. The antibody 8-18C5 binds to three loops located at the membrane-distal side of MOG with a surprisingly dominant contribution made by MOG residues 101-108 containing a strained loop that forms the upper edge of the putative ligand binding site. The sequence R101DHSYQEE108 is unique for MOG, whereas large parts of the remaining sequence are conserved in potentially tolerogenic MOG homologues expressed outside the immuno-privileged environment of the CNS. Strikingly, the only sequence identical to DHSYQEE was found in a Chlamydia trachomatis protein of unknown function, raising the possibility that Chlamydia infections may play a role in the MOG-specific autoimmune response in man. Our data provide the structural basis for the development of diagnostic and therapeutic strategies targeting the pathogenic autoantibody response to MOG.


  • Organizational Affiliation

    Abteilung Strukturforschung, Max-Planck-Institut für Biochemie, Am Klopferspitz 18a, 82152 Martinsried, Germany. breitha@biochem.mpg.de


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Myelin Oligodendrocyte Glycoprotein139Rattus norvegicusMutation(s): 1 
Gene Names: MOG
UniProt
Find proteins for Q63345 (Rattus norvegicus)
Explore Q63345 
Go to UniProtKB:  Q63345
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ63345
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.194 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.234α = 90
b = 50.234β = 90
c = 76.61γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-07-15
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance