Crystal Structure of a disulfide trapped single chain trimer composed of the MHC I heavy chain H-2Kb Y84C K66A mutant, beta-2microglobulin, and ovalbumin-derived peptide

Experimental Data Snapshot

  • Resolution: 2.05 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history


The partial dissociation of MHC class I-bound peptides exposes their N terminus to trimming by endoplasmic reticulum aminopeptidase 1.

Papakyriakou, A.Reeves, E.Beton, M.Mikolajek, H.Douglas, L.Cooper, G.Elliott, T.Werner, J.M.James, E.

(2018) J. Biol. Chem. 293: 7538-7548


Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin,H-2 class I histocompatibility antigen, K-B alpha chain
A, B
431Mus musculusMutation(s): 2 
Gene Names: H2-K1 (H2-K), B2m
Find proteins for P01901 (Mus musculus)
Go to UniProtKB:  P01901
Find proteins for P01887 (Mus musculus)
Go to UniProtKB:  P01887
Experimental Data & Validation

Experimental Data

  • Resolution: 2.05 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 66.460α = 90.00
b = 89.320β = 111.24
c = 89.400γ = 90.00
Software Package:
Software NamePurpose
xia2data reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/L010402/1

Revision History 

  • Version 1.0: 2018-04-18
    Type: Initial release
  • Version 1.1: 2018-04-25
    Type: Data collection, Derived calculations
  • Version 1.2: 2018-05-30
    Type: Data collection, Database references