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- PDB-8cx4: TCR-antigen complex AS8.4-YEIH-HLA*B27 -

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Basic information

Entry
Database: PDB / ID: 8cx4
TitleTCR-antigen complex AS8.4-YEIH-HLA*B27
Components
  • AS8.4a
  • AS8.4b
  • Beta-2-microglobulin
  • MHC class I antigen
  • YEIH
KeywordsIMMUNE SYSTEM / TCR MHC HLA-B27
Function / homology
Function and homology information


positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / cellular response to iron ion ...positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / lumenal side of endoplasmic reticulum membrane / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / peptide antigen assembly with MHC class I protein complex / ER to Golgi transport vesicle membrane / regulation of iron ion transport / response to molecule of bacterial origin / MHC class I peptide loading complex / HFE-transferrin receptor 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 / negative regulation of neurogenesis / positive regulation of receptor-mediated endocytosis / peptide antigen assembly with MHC class II protein complex / multicellular organismal-level iron ion homeostasis / MHC class II protein complex / cellular response to nicotine / specific granule lumen / positive regulation of cellular senescence / positive regulation of T cell mediated cytotoxicity / recycling endosome membrane / phagocytic vesicle membrane / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / negative regulation of epithelial cell proliferation / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of immune response / Interferon gamma signaling / Modulation by Mtb of host immune system / positive regulation of T cell activation / sensory perception of smell / negative regulation of neuron projection development / positive regulation of protein binding / tertiary granule lumen / DAP12 signaling / MHC class II protein complex binding / late endosome membrane / iron ion transport / ER-Phagosome pathway / T cell differentiation in thymus / early endosome membrane / protein refolding / protein homotetramerization / intracellular iron ion homeostasis / amyloid fibril formation / learning or memory / immune response / Amyloid fiber formation / endoplasmic reticulum lumen / lysosomal membrane / Golgi membrane / external side of plasma membrane / signaling receptor binding / focal adhesion / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / identical protein binding / membrane / plasma membrane / cytosol
Similarity search - Function
MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. ...MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
MHC class I antigen / Beta-2-microglobulin
Similarity search - Component
Biological speciesHomo sapiens (human)
Escherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsYang, X. / Jude, K.M. / Garcia, K.C.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)5R01AI103867 United States
CitationJournal: Nature / Year: 2022
Title: Autoimmunity-associated T cell receptors recognize HLA-B*27-bound peptides.
Authors: Yang, X. / Garner, L.I. / Zvyagin, I.V. / Paley, M.A. / Komech, E.A. / Jude, K.M. / Zhao, X. / Fernandes, R.A. / Hassman, L.M. / Paley, G.L. / Savvides, C.S. / Brackenridge, S. / Quastel, M. ...Authors: Yang, X. / Garner, L.I. / Zvyagin, I.V. / Paley, M.A. / Komech, E.A. / Jude, K.M. / Zhao, X. / Fernandes, R.A. / Hassman, L.M. / Paley, G.L. / Savvides, C.S. / Brackenridge, S. / Quastel, M.N. / Chudakov, D.M. / Bowness, P. / Yokoyama, W.M. / McMichael, A.J. / Gillespie, G.M. / Garcia, K.C.
History
DepositionMay 19, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 7, 2022Provider: repository / Type: Initial release
Revision 1.1Dec 21, 2022Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jan 4, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.3Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: MHC class I antigen
B: Beta-2-microglobulin
C: YEIH
D: AS8.4a
F: AS8.4b
hetero molecules


Theoretical massNumber of molelcules
Total (without water)95,5026
Polymers95,4105
Non-polymers921
Water1,13563
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: surface plasmon resonance
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10730 Å2
ΔGint-56 kcal/mol
Surface area37960 Å2
MethodPISA
Unit cell
Length a, b, c (Å)83.226, 51.731, 98.411
Angle α, β, γ (deg.)90.000, 97.000, 90.000
Int Tables number4
Space group name H-MP1211
Space group name HallP2yb
Symmetry operation#1: x,y,z
#2: -x,y+1/2,-z

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Components

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Protein , 4 types, 4 molecules ABDF

#1: Protein MHC class I antigen


Mass: 32217.451 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HLA-B / Production host: Escherichia coli (E. coli) / References: UniProt: A3F718
#2: Protein Beta-2-microglobulin


Mass: 11879.356 Da / Num. of mol.: 1 / Fragment: UNP residues 21-119
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: B2M, CDABP0092, HDCMA22P / Production host: Escherichia coli (E. coli) / References: UniProt: P61769
#4: Protein AS8.4a


Mass: 22717.021 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#5: Protein AS8.4b


Mass: 27517.408 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Protein/peptide , 1 types, 1 molecules C

#3: Protein/peptide YEIH


Mass: 1078.413 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli)

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Non-polymers , 2 types, 64 molecules

#6: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 63 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN

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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: 2.2 Å3/Da / Density % sol: 44.19 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.5 / Details: 25% PEG3350 and 0.1M HEPES pH 7.5

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Data collection

DiffractionMean temperature: 80 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL12-1 / Wavelength: 0.97946 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Apr 29, 2022
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97946 Å / Relative weight: 1
ReflectionResolution: 2.2→41 Å / Num. obs: 39894 / % possible obs: 93.6 % / Redundancy: 7.3 % / Biso Wilson estimate: 48.63 Å2 / CC1/2: 0.995 / Net I/σ(I): 6.8
Reflection shellResolution: 2.2→2.27 Å / Num. unique obs: 3517 / CC1/2: 0.327

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Processing

Software
NameVersionClassification
PHENIX1.20.1_4487refinement
PHENIX1.20.1_4487refinement
XDSdata reduction
XDSdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 5KSB

5ksb


Resolution: 2.2→39.96 Å / SU ML: 0.4394 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 35.4603
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.2644 1992 5.02 %
Rwork0.2203 37694 -
obs0.2225 39686 92.99 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 59.56 Å2
Refinement stepCycle: LAST / Resolution: 2.2→39.96 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6637 0 6 63 6706
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00336808
X-RAY DIFFRACTIONf_angle_d0.57249256
X-RAY DIFFRACTIONf_chiral_restr0.0411988
X-RAY DIFFRACTIONf_plane_restr0.00421221
X-RAY DIFFRACTIONf_dihedral_angle_d14.19572488
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.2-2.260.43251410.41772648X-RAY DIFFRACTION92.05
2.26-2.320.38081430.38692703X-RAY DIFFRACTION94.14
2.32-2.380.41511420.36282715X-RAY DIFFRACTION94.42
2.38-2.460.40411440.33762712X-RAY DIFFRACTION94.13
2.46-2.550.34961410.31562678X-RAY DIFFRACTION94.03
2.55-2.650.32431420.28412687X-RAY DIFFRACTION93.43
2.65-2.770.36371400.27522662X-RAY DIFFRACTION92.69
2.77-2.920.33111400.26852636X-RAY DIFFRACTION90.96
2.92-3.10.31171240.25882368X-RAY DIFFRACTION82.03
3.1-3.340.2911470.22792761X-RAY DIFFRACTION95.85
3.34-3.680.27791480.20572807X-RAY DIFFRACTION96.57
3.68-4.210.2331470.18462777X-RAY DIFFRACTION95.56
4.21-5.30.18341450.1662755X-RAY DIFFRACTION93.73
5.3-39.960.21480.172785X-RAY DIFFRACTION92.35

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