2GW5

Crystal Structure of LIR-2 (ILT4) at 1.8 : differences from LIR-1 (ILT2) in regions implicated in the binding of the Cytomegalovirus class I MHC homolog UL18


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.240 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of LIR-2 (ILT4) at 1.8 A: differences from LIR-1 (ILT2) in regions implicated in the binding of the Human Cytomegalovirus class I MHC homolog UL18.

Willcox, B.E.Thomas, L.M.Chapman, T.L.Heikema, A.P.West, A.P.Bjorkman, P.J.

(2002) Bmc Struct.Biol. 2: 6-6


  • PubMed Abstract: 
  • Leukocyte Immunoglobulin-like Receptor-1 (LIR-1) and LIR-2 (also known as ILT2 and ILT4 respectively) are highly related cell surface receptors that bind a broad range of class I MHC molecules with low (microM) affinities. Expressed on monocytic cell ...

    Leukocyte Immunoglobulin-like Receptor-1 (LIR-1) and LIR-2 (also known as ILT2 and ILT4 respectively) are highly related cell surface receptors that bind a broad range of class I MHC molecules with low (microM) affinities. Expressed on monocytic cells and macrophages, both molecules transmit inhibitory signals after binding ligands. In addition to binding host class I MHC, the LIR-1 molecule, which is also expressed on lymphoid tissues, binds with a high (nM) affinity to UL18, a class I MHC homolog encoded by Human Cytomegalovirus (HCMV). In comparison, LIR-2 binds UL18 only weakly (microM KD). To understand how HCMV preferentially targets the more broadly expressed LIR-1 molecule, we determined the crystal structure of a ligand-binding fragment of LIR-2, and compared this to the existing high-resolution crystal structure of LIR-1.


    Organizational Affiliation

    Division of Biology 156-29, California Institute of Technology, Pasadena, California 91125, USA. b.willcox@bham.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Leukocyte immunoglobulin-like receptor subfamily B member 2 precursor
A
197Homo sapiensMutation(s): 0 
Gene Names: LILRB2 (ILT4, LIR2, MIR10)
Find proteins for Q8N423 (Homo sapiens)
Go to Gene View: LILRB2
Go to UniProtKB:  Q8N423
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IPA
Query on IPA

Download SDF File 
Download CCD File 
A
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.240 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 62.530α = 90.00
b = 62.530β = 90.00
c = 106.917γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
AMoREphasing
SCALEPACKdata scaling
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-20
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-02-14
    Type: Experimental preparation