6GL1

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.62 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.226 

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:  
    6GGM, 6GH1, 6GH4, 6GHN, 6GL1

  • 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 VL9 binding by HLA-E, a preference subsequently supported by structural analyses ...

    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. geraldine.gillespie@ndm.ox.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MHC class I antigenA, C, E, G274Homo sapiensMutation(s): 0 
Gene Names: HLA-EHLA-6.2HLAE
UniProt & NIH Common Fund Data Resources
Find proteins for P13747 (Homo sapiens)
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Go to UniProtKB:  P13747
PHAROS:  P13747
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB, D, F, H100Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ARG-MET-TYR-SER-PRO-THR-SER-ILE-LEUI [auth P], L [auth Q], J [auth R], K [auth T]9Human immunodeficiency virus 1Mutation(s): 0 
EC: 3.4.23.16 (UniProt), 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.62 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.226 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 244.82α = 90
b = 48.22β = 117.38
c = 153.02γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
MOLREPphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationUnited StatesOPP1133649

Revision History  (Full details and data files)

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