6GL1

HLA-E*01:03 in complex with the HIV epitope, RL9HIV


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.623 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Pathogen-derived HLA-E bound epitopes reveal broad primary anchor pocket tolerability and conformationally malleable peptide binding.

Walters, L.C.Harlos, K.Brackenridge, S.Rozbesky, D.Barrett, J.R.Jain, V.Walter, T.S.O'Callaghan, C.A.Borrow, P.Toebes, M.Hansen, S.G.Sacha, J.Abdulhaqq, S.Greene, J.M.Fruh, K.Marshall, E.Picker, L.J.Jones, E.Y.McMichael, A.J.Gillespie, G.M.

(2018) Nat Commun 9: 3137-3137

  • DOI: 10.1038/s41467-018-05459-z
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Through major histocompatibility complex class Ia leader sequence-derived (VL9) peptide binding and CD94/NKG2 receptor engagement, human leucocyte antigen E (HLA-E) reports cellular health to NK cells. Previous studies demonstrated a strong bias for ...

    Through major histocompatibility complex class Ia leader sequence-derived (VL9) peptide binding and CD94/NKG2 receptor engagement, human leucocyte antigen E (HLA-E) reports cellular health to NK cells. Previous studies demonstrated a strong bias for VL9 binding by HLA-E, a preference subsequently supported by structural analyses. However, Mycobacteria tuberculosis (Mtb) infection and Rhesus cytomegalovirus-vectored SIV vaccinations revealed contexts where HLA-E and the rhesus homologue, Mamu-E, presented diverse pathogen-derived peptides to CD8 + T cells, respectively. Here we present crystal structures of HLA-E in complex with HIV and Mtb-derived peptides. We show that despite the presence of preferred primary anchor residues, HLA-E-bound peptides can adopt alternative conformations within the peptide binding groove. Furthermore, combined structural and mutagenesis analyses illustrate a greater tolerance for hydrophobic and polar residues in the primary pockets than previously appreciated. Finally, biochemical studies reveal HLA-E peptide binding and exchange characteristics with potential relevance to its alternative antigen presenting function in vivo.


    Organizational Affiliation

    Nuffield Department of Medicine Research Building, Roosevelt Drive, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.,Nuffield Department of Medicine Research Building, Roosevelt Drive, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK. geraldine.gillespie@ndm.ox.ac.uk.,Division of Structural Biology, Wellcome Centre for Human Genetics, Roosevelt Drive, University of Oxford, Oxford, OX3 7BN, UK.,Vaccine and Gene Therapy Institute and Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, 97006, USA.,Department Molecular Oncology and Immunology, B6 Plesmanlaan 121, Amsterdam, 1066CX, The Netherlands.,Nuffield Department of Medicine Research Building, Roosevelt Drive, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK. andrew.mcmichael@ndm.ox.ac.uk.,Henry Wellcome Building for Molecular Physiology, University of Oxford, Oxford, OX3 7BN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MHC class I antigen
A, C, E, G
274Homo sapiensMutation(s): 0 
Gene Names: HLA-E (HLA-6.2, HLAE)
Find proteins for P13747 (Homo sapiens)
Go to Gene View: HLA-E
Go to UniProtKB:  P13747
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B, D, F, H
100Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ARG-MET-TYR-SER-PRO-THR-SER-ILE-LEU
P, R, T, Q
9Human immunodeficiency virus type 1 group M subtype B (isolate HXB2)Mutation(s): 0 
Gene Names: gag-pol
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Go to UniProtKB:  P04585
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
G
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, C, E, H
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.623 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.223 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 244.820α = 90.00
b = 48.220β = 117.38
c = 153.020γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
xia2data reduction
PHENIXrefinement
xia2data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationUnited StatesOPP1133649

Revision History 

  • Version 1.0: 2018-08-08
    Type: Initial release
  • Version 1.1: 2018-08-22
    Type: Data collection, Database references