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- PDB-1g0x: CRYSTAL STRUCTURE OF THE LIGAND BINDING DOMAIN OF LIR-1 (ILT2) -

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Basic information

Entry
Database: PDB / ID: 1g0x
TitleCRYSTAL STRUCTURE OF THE LIGAND BINDING DOMAIN OF LIR-1 (ILT2)
ComponentsLEUCOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR-1
KeywordsIMMUNE SYSTEM / Immunoglobulin fold / 3-10 helix
Function / homology
Function and homology information


HLA-A specific inhibitory MHC class I receptor activity / positive regulation of gamma-delta T cell activation involved in immune response / MHC class Ib protein complex binding / HLA-B specific inhibitory MHC class I receptor activity / inhibitory MHC class I receptor activity / negative regulation of dendritic cell differentiation / immune response-inhibiting cell surface receptor signaling pathway / Fc receptor mediated inhibitory signaling pathway / MHC class Ib protein binding / MHC class Ib receptor activity ...HLA-A specific inhibitory MHC class I receptor activity / positive regulation of gamma-delta T cell activation involved in immune response / MHC class Ib protein complex binding / HLA-B specific inhibitory MHC class I receptor activity / inhibitory MHC class I receptor activity / negative regulation of dendritic cell differentiation / immune response-inhibiting cell surface receptor signaling pathway / Fc receptor mediated inhibitory signaling pathway / MHC class Ib protein binding / MHC class Ib receptor activity / negative regulation of T cell mediated cytotoxicity / MHC class I receptor activity / negative regulation of CD8-positive, alpha-beta T cell activation / negative regulation of transforming growth factor beta production / negative regulation of alpha-beta T cell activation / negative regulation of cytokine production involved in immune response / negative regulation of serotonin secretion / negative regulation of natural killer cell mediated cytotoxicity / dendritic cell differentiation / negative regulation of mononuclear cell proliferation / negative regulation of T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell / protein phosphatase 1 binding / negative regulation of osteoclast development / negative regulation of interleukin-12 production / negative regulation of endocytosis / negative regulation of interferon-beta production / negative regulation of dendritic cell apoptotic process / positive regulation of macrophage cytokine production / negative regulation of interleukin-10 production / MHC class I protein binding / negative regulation of calcium ion transport / negative regulation of type II interferon production / negative regulation of tumor necrosis factor production / negative regulation of cell cycle / T cell proliferation involved in immune response / negative regulation of T cell proliferation / positive regulation of defense response to virus by host / SH2 domain binding / response to virus / receptor internalization / cytokine-mediated signaling pathway / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of type II interferon production / cellular response to lipopolysaccharide / defense response to virus / adaptive immune response / positive regulation of apoptotic process / external side of plasma membrane / positive regulation of gene expression / signal transduction / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / extracellular region / plasma membrane / cytoplasm
Similarity search - Function
Immunoglobulin domain / Immunoglobulin / Immunoglobulin domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily ...Immunoglobulin domain / Immunoglobulin / Immunoglobulin domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulins / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Leukocyte immunoglobulin-like receptor subfamily B member 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 2.1 Å
AuthorsChapman, T.L. / Heikema, A.P. / West Jr., A.P. / Bjorkman, P.J.
CitationJournal: Immunity / Year: 2000
Title: Crystal structure and ligand binding properties of the D1D2 region of the inhibitory receptor LIR-1 (ILT2).
Authors: Chapman, T.L. / Heikema, A.P. / West Jr., A.P. / Bjorkman, P.J.
History
DepositionOct 9, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 17, 2001Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: LEUCOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR-1


Theoretical massNumber of molelcules
Total (without water)21,9991
Polymers21,9991
Non-polymers00
Water4,414245
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)68.258, 68.258, 129.734
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number92
Space group name H-MP41212

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Components

#1: Protein LEUCOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR-1 / LEUKOCYTE INHIBITORY RECEPTOR-1 / LEUKOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR / SUBFAMILY B (WITH TM AND ...LEUKOCYTE INHIBITORY RECEPTOR-1 / LEUKOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR / SUBFAMILY B (WITH TM AND ITIM DOMAINS) / MEMBER 1 / LEUKOCYTE IMMUNOGLOBULIN-LIKE RECEPTOR 1


Mass: 21998.645 Da / Num. of mol.: 1 / Fragment: D1D2 LIGAND BINDING DOMAIN
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Plasmid: PET23 / Production host: Escherichia coli (E. coli) / References: UniProt: Q8NHL6
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 245 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.43 Å3/Da / Density % sol: 64.16 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: potassium sodium tartarate, tris, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal grow
*PLUS
Temperature: 22 ℃
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
18 mg/mlprotein1drop
20.7 Mpotassium sodium tartrate1drop
30.1 MTris-Cl1reservoirpH8.5

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-2 / Wavelength: 1
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Dec 1, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.1→20 Å / Num. obs: 21555 / % possible obs: 99.5 % / Observed criterion σ(I): -3 / Redundancy: 3.6 % / Biso Wilson estimate: 16.2 Å2 / Rmerge(I) obs: 0.06 / Net I/σ(I): 18.8
Reflection shellResolution: 2.1→2.17 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.297 / Num. unique all: 2112 / % possible all: 99.5
Reflection
*PLUS
Lowest resolution: 30 Å / Rmerge(I) obs: 0.06
Reflection shell
*PLUS
% possible obs: 99.5 % / Num. unique obs: 2112 / Mean I/σ(I) obs: 3.6

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1refinement
RefinementResolution: 2.1→19.77 Å / Rfactor Rfree error: 0.008 / Data cutoff high absF: 1902676.83 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.244 900 4.9 %RANDOM
Rwork0.214 ---
obs0.214 18542 99.8 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 49.83 Å2 / ksol: 0.361 e/Å3
Displacement parametersBiso mean: 29.6 Å2
Baniso -1Baniso -2Baniso -3
1-1.28 Å20 Å20 Å2
2--1.28 Å20 Å2
3----2.57 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.25 Å
Luzzati d res low-5 Å
Luzzati sigma a0.23 Å0.16 Å
Refinement stepCycle: LAST / Resolution: 2.1→19.77 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1512 0 0 245 1757
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d25.9
X-RAY DIFFRACTIONc_improper_angle_d0.81
X-RAY DIFFRACTIONc_mcbond_it1.421.5
X-RAY DIFFRACTIONc_mcangle_it2.292
X-RAY DIFFRACTIONc_scbond_it3.12
X-RAY DIFFRACTIONc_scangle_it3.972.5
LS refinement shellResolution: 2.1→2.17 Å / Rfactor Rfree error: 0.029 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.287 99 5.5 %
Rwork0.226 1698 -
obs--99.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PAPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAWATER.TOP
Software
*PLUS
Name: CNS / Version: 1 / Classification: refinement
Refinement
*PLUS
σ(F): 0 / % reflection Rfree: 4.9 %
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 29.6 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg25.9
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.81
X-RAY DIFFRACTIONc_mcbond_it1.5
X-RAY DIFFRACTIONc_scbond_it2
X-RAY DIFFRACTIONc_mcangle_it2
X-RAY DIFFRACTIONc_scangle_it2.5
LS refinement shell
*PLUS
Rfactor Rfree: 0.287 / % reflection Rfree: 5.5 % / Rfactor Rwork: 0.226

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