1K8I

CRYSTAL STRUCTURE OF MOUSE H2-DM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of mouse H2-M.

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

(1998) Immunity 9: 385-393


  • PubMed Abstract: 
  • H2-M (HLA-DM in humans) resides in an acidic endosomal compartment, where it facilitates the loading of antigenic peptides into the peptide-binding groove of class II MHC. The crystal structure of a soluble form of H2-M has been solved to 3.1 A resol ...

    H2-M (HLA-DM in humans) resides in an acidic endosomal compartment, where it facilitates the loading of antigenic peptides into the peptide-binding groove of class II MHC. The crystal structure of a soluble form of H2-M has been solved to 3.1 A resolution, revealing a heterodimer with structural similarities to the MHC family of proteins. In contrast to its antigen-presenting cousins, the membrane distal alpha helices of H2-M pack closely together, occluding most of the binding groove except for a single large pocket near the center. The structure of H2-M has several unique features that may play a role in its function as a molecular chaperone and peptide exchange factor.


    Organizational Affiliation

    Center for Immunology, Department of Pathology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. fremont@immunology.wustl.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MHC class II H2-M alpha chain
A
191Mus musculusMutation(s): 0 
Gene Names: H2-DMa (H2-Ma, Ma)
Find proteins for P28078 (Mus musculus)
Go to UniProtKB:  P28078
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MHC class II H2-M beta 2 chain
B
191Mus musculusMutation(s): 0 
Gene Names: H2-DMb2 (H2-M beta2, H2-Mb2)
Find proteins for Q31099 (Mus musculus)
Go to UniProtKB:  Q31099
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.205 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 142.700α = 90.00
b = 142.700β = 90.00
c = 76.900γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-12-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance