1P7Q

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


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

  • 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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, A-2 alpha chain
A
276Homo sapiensMutation(s): 0 
Gene Names: HLA-A (HLAA)
Find proteins for P01892 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P01892
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
99Homo 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
POL polyprotein
C
9Human immunodeficiency virus type 1 group M subtype DMutation(s): 0 
Gene Names: gag-pol
Find proteins for P12499 (Human immunodeficiency virus type 1 group M subtype D)
Go to UniProtKB:  P12499
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
leukocyte immunoglobulin-like receptor 1
D
197Homo sapiensMutation(s): 0 
Gene Names: LILRB1 (ILT2, LIR1, MIR7)
Find proteins for Q8NHL6 (Homo sapiens)
Go to Gene View: LILRB1
Go to UniProtKB:  Q8NHL6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.218 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 113.740α = 90.00
b = 113.740β = 90.00
c = 89.460γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
AMoREphasing
HKL-2000data reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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