1ES0

CRYSTAL STRUCTURE OF THE MURINE CLASS II ALLELE I-A(G7) COMPLEXED WITH THE GLUTAMIC ACID DECARBOXYLASE (GAD65) PEPTIDE 207-220


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A structural framework for deciphering the link between I-Ag7 and autoimmune diabetes.

Corper, A.L.Stratmann, T.Apostolopoulos, V.Scott, C.A.Garcia, K.C.Kang, A.S.Wilson, I.A.Teyton, L.

(2000) Science 288: 505-511

  • DOI: 10.1126/science.288.5465.505
  • Primary Citation of Related Structures:  
    1ES0

  • PubMed Abstract: 
  • Susceptibility to murine and human insulin-dependent diabetes mellitus correlates strongly with major histocompatibility complex (MHC) class II I-A or HLA-DQ alleles that lack an aspartic acid at position beta57. I-Ag7 lacks this aspartate and is the only class II allele expressed by the nonobese diabetic mouse ...

    Susceptibility to murine and human insulin-dependent diabetes mellitus correlates strongly with major histocompatibility complex (MHC) class II I-A or HLA-DQ alleles that lack an aspartic acid at position beta57. I-Ag7 lacks this aspartate and is the only class II allele expressed by the nonobese diabetic mouse. The crystal structure of I-Ag7 was determined at 2.6 angstrom resolution as a complex with a high-affinity peptide from the autoantigen glutamic acid decarboxylase (GAD) 65. I-Ag7 has a substantially wider peptide-binding groove around beta57, which accounts for distinct peptide preferences compared with other MHC class II alleles. Loss of Asp(beta57) leads to an oxyanion hole in I-Ag7 that can be filled by peptide carboxyl residues or, perhaps, through interaction with the T cell receptor.


    Organizational Affiliation

    Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
H-2 CLASS II HISTOCOMPATIBILITY ANTIGENA190Mus musculusMutation(s): 0 
Gene Names: H2-Aa
UniProt
Find proteins for P04228 (Mus musculus)
Explore P04228 
Go to UniProtKB:  P04228
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
65 KD GLUTAMIC ACID DECARBOXYLASE+H-2 CLASS II HISTOCOMPATIBILITY ANTIGENB221Homo sapiensMutation(s): 0 
Gene Names: GAD2
EC: 4.1.1.15
UniProt & NIH Common Fund Data Resources
Find proteins for Q05329 (Homo sapiens)
Explore Q05329 
Go to UniProtKB:  Q05329
PHAROS:  Q05329
Find proteins for Q31135 (Mus musculus)
Explore Q31135 
Go to UniProtKB:  Q31135
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.149α = 90
b = 110.123β = 90
c = 96.084γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
TRUNCATEdata reduction
AMoREphasing
CNSrefinement
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-28
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-08-23
    Changes: Refinement description, Source and taxonomy