1P7Q

Crystal Structure of HLA-A2 Bound to LIR-1, a Host and Viral MHC Receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of HLA-A2 bound to LIR-1, a host and viral major histocompatibility complex receptor.

Willcox, B.E.Thomas, L.M.Bjorkman, P.J.

(2003) Nat Immunol 4: 913-919

  • DOI: 10.1038/ni961
  • Primary Citation of Related Structures:  
    1P7Q

  • PubMed Abstract: 
  • Leukocyte immunoglobulin-like receptor 1 (LIR-1), an inhibitory receptor expressed on monocytes, dendritic cells and lymphocytes, regulates cellular function by binding a broad range of classical and nonclassical major histocompatibility complex (MHC ...

    Leukocyte immunoglobulin-like receptor 1 (LIR-1), an inhibitory receptor expressed on monocytes, dendritic cells and lymphocytes, regulates cellular function by binding a broad range of classical and nonclassical major histocompatibility complex (MHC) class I molecules, and the human cytomegalovirus MHC class I homolog UL18. Here we describe the 3.4-A crystal structure of a complex between the LIR-1 D1D2 domains and the MHC class I molecule HLA-A2. LIR-1 contacts the mostly conserved beta(2)-microglobulin and alpha3 domains of HLA-A2. The LIR-1 binding site comprises residues at the interdomain hinge, and a patch at the D1 tip. The structure shows how LIR-1 recognizes UL18 and diverse MHC class I molecules, and indicates that a similar mode of MHC class I recognition is used by other LIR family members.


    Organizational Affiliation

    Division of Biology 114-96, California Institute of Technology, Pasadena, California 91125, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HLA class I histocompatibility antigen, A-2 alpha chainA276Homo sapiensMutation(s): 0 
Gene Names: HLA-A OR HLAAHLA-AHLAA
Find proteins for P04439 (Homo sapiens)
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Go to UniProtKB:  P04439
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PHAROS  P04439
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinB99Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
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Go to UniProtKB:  P61769
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PHAROS  P61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
POL polyproteinC9N/AMutation(s): 0 
Find proteins for P12499 (Human immunodeficiency virus type 1 group M subtype D (isolate Z2/CDC-Z34))
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
leukocyte immunoglobulin-like receptor 1D197Homo sapiensMutation(s): 0 
Gene Names: LILRB1ILT2LIR1MIR7
Find proteins for Q8NHL6 (Homo sapiens)
Explore Q8NHL6 
Go to UniProtKB:  Q8NHL6
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PHAROS  Q8NHL6
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.74α = 90
b = 113.74β = 90
c = 89.46γ = 120
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-14
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance