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- PDB-1nez: The Crystal Structure of a TL/CD8aa Complex at 2.1A resolution:Im... -

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Basic information

Entry
Database: PDB / ID: 1nez
TitleThe Crystal Structure of a TL/CD8aa Complex at 2.1A resolution:Implications for Memory T cell Generation, Co-receptor Preference and Affinity
Components
  • Beta-2-microglobulin
  • H-2 class I histocompatibility antigen, TLA(C) alpha chain
  • T-cell surface glycoprotein CD8 alpha chain
KeywordsIMMUNE SYSTEM
Function / homology
Function and homology information


cytotoxic T cell differentiation / T cell mediated immunity / Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of peptide antigen via MHC class I / cellular defense response ...cytotoxic T cell differentiation / T cell mediated immunity / Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of peptide antigen via MHC class I / cellular defense response / Neutrophil degranulation / positive regulation of calcium-mediated signaling / T cell activation / lumenal side of endoplasmic reticulum membrane / cellular response to iron(III) ion / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / iron ion transport / calcium-mediated signaling / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / MHC class I protein complex / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / phagocytic vesicle membrane / negative regulation of epithelial cell proliferation / sensory perception of smell / positive regulation of cellular senescence / T cell differentiation in thymus / T cell receptor signaling pathway / negative regulation of neuron projection development / protein refolding / protein homotetramerization / defense response to virus / amyloid fibril formation / adaptive immune response / intracellular iron ion homeostasis / learning or memory / cell surface receptor signaling pathway / receptor complex / external side of plasma membrane / structural molecule activity / cell surface / Golgi apparatus / protein homodimerization activity / extracellular space / identical protein binding / plasma membrane / cytosol
Similarity search - Function
CD8 alpha subunit / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Immunoglobulin V-Type / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily ...CD8 alpha subunit / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Immunoglobulin V-Type / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / Immunoglobulin V-set domain / MHC classes I/II-like antigen recognition protein / Immunoglobulin V-set domain / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin subtype / Immunoglobulin / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold / Immunoglobulins / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
T-cell surface glycoprotein CD8 alpha chain / Beta-2-microglobulin / H-2 class I histocompatibility antigen, TLA(B) alpha chain / H-2 class I histocompatibility antigen, TLA(B) alpha chain
Similarity search - Component
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsLiu, Y. / Xiong, Y. / Naidenko, O.V. / Liu, J.H. / Zhang, R. / Joachimiak, A. / Kronenberg, M. / Cheroutre, H. / Reinherz, E.L. / Wang, J.H.
CitationJournal: Immunity / Year: 2003
Title: The Crystal Structure of a TL/CD8alphaalpha Complex at 2.1 A resolution: Implications for modulation of T cell activation and memory
Authors: Liu, Y. / Xiong, Y. / Naidenko, O.V. / Liu, J.H. / Zhang, R. / Joachimiak, A. / Kronenberg, M. / Cheroutre, H. / Reinherz, E.L. / Wang, J.H.
History
DepositionDec 12, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 8, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Sep 18, 2013Group: Derived calculations
Revision 1.4Jul 29, 2020Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / pdbx_entity_nonpoly / struct_conn / struct_ref_seq_dif / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_entity_nonpoly.name / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_ref_seq_dif.details
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.5Nov 6, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: H-2 class I histocompatibility antigen, TLA(C) alpha chain
B: Beta-2-microglobulin
G: T-cell surface glycoprotein CD8 alpha chain
H: T-cell surface glycoprotein CD8 alpha chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)73,0448
Polymers72,1594
Non-polymers8854
Water2,954164
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2380 Å2
ΔGint-9 kcal/mol
Surface area19120 Å2
Unit cell
Length a, b, c (Å)77.018, 77.018, 176.045
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein H-2 class I histocompatibility antigen, TLA(C) alpha chain / TL


Mass: 31660.002 Da / Num. of mol.: 1 / Source method: obtained synthetically
Details: The peptide was chemically synthesized. The sequence of the peptide is naturally found in Mus musculus (mouse).
References: UniProt: P14433, UniProt: P14432*PLUS
#2: Protein Beta-2-microglobulin


Mass: 11704.359 Da / Num. of mol.: 1 / Source method: obtained synthetically
Details: The peptide was chemically synthesized. The sequence of the peptide is naturally found in Mus musculus (mouse).
References: UniProt: P01887
#3: Protein T-cell surface glycoprotein CD8 alpha chain / T-cell surface glycoprotein LYT-2 / CD8AA


Mass: 14397.548 Da / Num. of mol.: 2 / Source method: obtained synthetically
Details: The peptide was chemically synthesized. The sequence of the peptide is naturally found in Mus musculus (mouse).
References: UniProt: P01731
#4: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 164 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.09 Å3/Da / Density % sol: 41.08 %
Crystal growTemperature: 300 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: 2.0M ammonium sulfate, 2.0% PEG 400, 5% DMSO, 0.1M HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Crystal grow
*PLUS
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
120 mg/mlprotein1drop
22.0 Mammonium sulfate1reservoir
32.0 %PEG4001reservoir
45 %DMSO1reservoir
50.1 MHEPES1reservoirpH7.5

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Data collection

DiffractionMean temperature: 160 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 1.01 Å
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.01 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. obs: 35619 / % possible obs: 98.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Rmerge(I) obs: 0.071 / Net I/σ(I): 9.7
Reflection
*PLUS
Num. measured all: 171093
Reflection shell
*PLUS
Highest resolution: 2.1 Å / Lowest resolution: 2.18 Å / % possible obs: 100 % / Rmerge(I) obs: 0.5 / Mean I/σ(I) obs: 3.1

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Processing

Software
NameClassification
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.1→50 Å / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.279 -Random
Rwork0.217 --
obs-33410 -
Displacement parameters
Baniso -1Baniso -2Baniso -3
1--0.332 Å2-4.482 Å20 Å2
2---0.332 Å20 Å2
3---0.664 Å2
Refinement stepCycle: LAST / Resolution: 2.1→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4974 0 56 164 5194
Xplor file
Refine-IDSerial noParam file
X-RAY DIFFRACTION1protein_rep.param
X-RAY DIFFRACTION2ion.param
X-RAY DIFFRACTION3water_rep.param
X-RAY DIFFRACTION4carbohydrate.param
Refinement
*PLUS
Lowest resolution: 50 Å
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONo_bond_d0.011
X-RAY DIFFRACTIONo_angle_d
X-RAY DIFFRACTIONo_angle_deg1.643

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