4N8V

Crystal structure of killer cell immunoglobulin-like receptor KIR2DS2 in complex with HLA-A

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

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This is version 1.2 of the entry. See complete history. 


Literature

Activating killer cell immunoglobulin-like receptor 2DS2 binds to HLA-A*11

Liu, J.X., Xiao, Z.W., Ko, H.L., Shen, M.X., Ren, E.C.

(2014) Proc Natl Acad Sci U S A 111: 2662-2667

  • DOI: 10.1073/pnas.1322052111
  • Primary Citation of Related Structures:  
    4N8V

  • PubMed Abstract: 

    • Inhibitory killer cell Ig-like receptors (KIRs) are known to recognize HLA ligands mainly of the HLA-C and Bw4 groups, but the ligands for KIRs are poorly understood. We report here the identification of the cognate ligand for the activating KIR 2DS2 as HLA-A*11:01 ...

    Inhibitory killer cell Ig-like receptors (KIRs) are known to recognize HLA ligands mainly of the HLA-C and Bw4 groups, but the ligands for KIRs are poorly understood. We report here the identification of the cognate ligand for the activating KIR 2DS2 as HLA-A*11:01. The crystal structure of the KIR2DS2-HLA-A*11:01 complex was solved at 2.5-Å resolution and revealed residue-binding characteristics distinct from those of inhibitory KIRs with HLA-C and the critical role of residues Tyr45 and Asp72 in shaping binding specificity to HLA-A*11:01. Using KIR2DS2 tetramers, binding to surface HLA-A*11:01 on live cells was demonstrated and, furthermore, that binding can be altered by residue changes at p8 of the peptide, indicating the influence of peptide sequence on KIR-HLA association. In addition, heteronuclear single quantum coherence NMR was used to map the involvement of critical residues in HLA binding at the interface of KIR and HLA, and validates the data observed in the crystal structure. Our data provide structural evidence of the recognition of A*11:01 by the activating KIR2DS2 and extend our understanding of the KIR-HLA binding spectrum.

    Organizational Affiliation: 

    Singapore Immunology Network, Agency for Science, Technology and Research, Singapore 138648.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Killer cell immunoglobulin-like receptor 2DS2A [auth G], B [auth I]201Homo sapiensMutation(s): 0 
Gene Names: KIR2DS2, CD158J, NKAT5
UniProt
Find proteins for P43631 (Homo sapiens)
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-11 alpha chainC [auth A], F [auth D]274Homo sapiensMutation(s): 0 
Gene Names: HLA-A, HLAA
UniProt & NIH Common Fund Data Resources
Find proteins for P04439 (Homo sapiens)
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PHAROS:  P04439
GTEx:  ENSG00000206503
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinD [auth B], G [auth E]100Homo sapiensMutation(s): 0 
Gene Names: B2M, CDABP0092, HDCMA22P
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PHAROS:  P61769
GTEx:  ENSG00000166710
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
peptide from Virion membrane protein A14E [auth C], H [auth F]9Vaccinia virus WRMutation(s): 0 
Gene Names: VACWR133
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.55α = 90
b = 94.67β = 90
c = 228.44γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
AMoREphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2013-10-18 
  • Released Date: 2014-02-05 
    • Deposition Author(s): Liu, J.X., Ren, E.C.

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-05
    Type: Initial release
  • Version 1.1: 2014-02-12
    Changes: Database references
  • Version 1.2: 2014-03-12
    Changes: Database references