1IEA

HISTOCOMPATIBILITY ANTIGEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structures of an MHC class II molecule with covalently bound single peptides.

Fremont, D.H.Hendrickson, W.A.Marrack, P.Kappler, J.

(1996) Science 272: 1001-1004

  • DOI: 10.1126/science.272.5264.1001
  • Primary Citation of Related Structures:  
    1IEB, 1IEA

  • PubMed Abstract: 
  • The high-resolution x-ray crystal structures of the murine major histocompatibility complex (MHC) class II molecule, I-E(k), occupied by either of two antigenic peptides were determined. They reveal the structural basis for the I-E(k) peptide binding ...

    The high-resolution x-ray crystal structures of the murine major histocompatibility complex (MHC) class II molecule, I-E(k), occupied by either of two antigenic peptides were determined. They reveal the structural basis for the I-E(k) peptide binding motif and suggest general principles for additional alleles. A buried cluster of acidic amino acids in the binding groove predicted to be conserved among all murine I-E and human DR MHC class II molecules suggests how pH may influence MHC binding or exchange of peptides. These structures also complement mutational studies on the importance of individual peptide residues to T cell receptor recognition.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, 10032, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MHC CLASS II I-EKAC192Mus musculusMutation(s): 0 
Gene Names: H2-Ea
Find proteins for P01904 (Mus musculus)
Explore P01904 
Go to UniProtKB:  P01904
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
MHC CLASS II I-EKBD228Mus musculusMutation(s): 0 
Gene Names: H2-Eb1
Find proteins for Q31163 (Mus musculus)
Explore Q31163 
Go to UniProtKB:  Q31163
NIH Common Fund Data Resources
IMPC  MGI:95901
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, B, C, D
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 147.02α = 90
b = 57.09β = 91.52
c = 117.01γ = 90
Software Package:
Software NamePurpose
HKLdata collection
DENZOdata reduction
SCALAdata scaling
Agrovatadata reduction
X-PLORmodel building
X-PLORrefinement
HKLdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-05
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-03-22
    Changes: Other
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Refinement description, Structure summary