6V2P

HLA-B*57:03 presenting the peptide ASLNLPAVSW


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.163 
  • R-Value Work: 0.135 
  • R-Value Observed: 0.136 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The molecular basis of how buried human leukocyte antigen polymorphism modulates natural killer cell function.

Saunders, P.M.MacLachlan, B.J.Pymm, P.Illing, P.T.Deng, Y.Wong, S.C.Oates, C.V.L.Purcell, A.W.Rossjohn, J.Vivian, J.P.Brooks, A.G.

(2020) Proc Natl Acad Sci U S A 117: 11636-11647

  • DOI: 10.1073/pnas.1920570117
  • Primary Citation of Related Structures:  
    6V2O, 6V2Q, 6V2P, 6V3J

  • PubMed Abstract: 
  • Micropolymorphisms within human leukocyte antigen (HLA) class I molecules can change the architecture of the peptide-binding cleft, leading to differences in peptide presentation and T cell recognition. The impact of such HLA variation on natural kil ...

    Micropolymorphisms within human leukocyte antigen (HLA) class I molecules can change the architecture of the peptide-binding cleft, leading to differences in peptide presentation and T cell recognition. The impact of such HLA variation on natural killer (NK) cell recognition remains unclear. Given the differential association of HLA-B*57:01 and HLA-B*57:03 with the control of HIV, recognition of these HLA-B57 allomorphs by the killer cell immunoglobulin-like receptor (KIR) 3DL1 was compared. Despite differing by only two polymorphic residues, both buried within the peptide-binding cleft, HLA-B*57:01 more potently inhibited NK cell activation. Direct-binding studies showed KIR3DL1 to preferentially recognize HLA-B*57:01, particularly when presenting peptides with positively charged position (P)Ω-2 residues. In HLA-B*57:01, charged PΩ-2 residues were oriented toward the peptide-binding cleft and away from KIR3DL1. In HLA-B*57:03, the charged PΩ-2 residues protruded out from the cleft and directly impacted KIR3DL1 engagement. Accordingly, KIR3DL1 recognition of HLA class I ligands is modulated by both the peptide sequence and conformation, as determined by the HLA polymorphic framework, providing a rationale for understanding differences in clinical associations.


    Organizational Affiliation

    Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, VIC 3010, Australia; jamie.rossjohn@monash.edu julian.vivian@monash.edu agbrooks@unimelb.edu.au.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA-B alpha chain (B*5703GB)A276Homo sapiensMutation(s): 0 
Gene Names: HLA-BHLA-B*5703GB
Find proteins for I3ZN84 (Homo sapiens)
Explore I3ZN84 
Go to UniProtKB:  I3ZN84
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB100Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide ALA-SER-LEU-ASN-LEU-PRO-ALA-VAL-SER-TRPC10synthetic constructMutation(s): 0 
Find proteins for P35221 (Homo sapiens)
Explore P35221 
Go to UniProtKB:  P35221
NIH Common Fund Data Resources
PHAROS  P35221
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PEG
Query on PEG

Download CCD File 
B
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download CCD File 
B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.163 
  • R-Value Work: 0.135 
  • R-Value Observed: 0.136 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.981α = 90
b = 82.277β = 90
c = 110.866γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2020-05-20
    Type: Initial release
  • Version 1.1: 2020-05-27
    Changes: Database references
  • Version 1.2: 2020-06-10
    Changes: Database references