+Open data
-Basic information
Entry | Database: PDB / ID: 7tuc | ||||||
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Title | Crystal structure of HLA-B*44:05 (T73C) with 9mer EEFGRAFSF | ||||||
Components |
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Keywords | IMMUNE SYSTEM / tapasin / histocompatibility complex class I / MHC-I / HLA / peptide editing / peptide loading complex / PLC / antigen presentation / immune response | ||||||
Function / homology | Function and homology information antigen processing and presentation / 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 / cellular response to iron ion / Endosomal/Vacuolar pathway ...antigen processing and presentation / 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 / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / 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 / 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 | ||||||
Biological species | Homo sapiens (human) Synthetic construct (others) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.25 Å | ||||||
Authors | Jiang, J. / Natarajan, K. / Kim, E. / Boyd, L.F. / Margulies, D.H. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Commun / Year: 2022 Title: Structural mechanism of tapasin-mediated MHC-I peptide loading in antigen presentation. Authors: Jiang, J. / Taylor, D.K. / Kim, E.J. / Boyd, L.F. / Ahmad, J. / Mage, M.G. / Truong, H.V. / Woodward, C.H. / Sgourakis, N.G. / Cresswell, P. / Margulies, D.H. / Natarajan, K. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 7tuc.cif.gz | 218.8 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7tuc.ent.gz | 141.7 KB | Display | PDB format |
PDBx/mmJSON format | 7tuc.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7tuc_validation.pdf.gz | 454.4 KB | Display | wwPDB validaton report |
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Full document | 7tuc_full_validation.pdf.gz | 455.3 KB | Display | |
Data in XML | 7tuc_validation.xml.gz | 20.5 KB | Display | |
Data in CIF | 7tuc_validation.cif.gz | 30.8 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tu/7tuc ftp://data.pdbj.org/pub/pdb/validation_reports/tu/7tuc | HTTPS FTP |
-Related structure data
Related structure data | 7tudC 7tueC 7tufC 7tugC 7tuhC 1m6oS C: citing same article (ref.) S: Starting model for refinement |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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-Components
-Protein , 2 types, 2 molecules AB
#1: Protein | Mass: 31804.158 Da / Num. of mol.: 1 / Mutation: T73C Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: HLA-B44:05 / Plasmid: pET21b / Production host: Escherichia coli BL21(DE3) (bacteria) |
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#2: Protein | 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 / Plasmid: pET21b / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P61769 |
-Protein/peptide , 1 types, 1 molecules P
#3: Protein/peptide | Mass: 1090.165 Da / Num. of mol.: 1 / Fragment: EEFGRAFSF Source method: isolated from a genetically manipulated source Details: HLA-DPA1*02:01 derived peptide 9mer / Source: (gene. exp.) Synthetic construct (others) / Gene: HLA-DPA1 / Production host: Synthetic construct (others) / References: UniProt: Q9TQB0 |
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-Non-polymers , 3 types, 459 molecules
#4: Chemical | #5: Chemical | #6: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 2.59 Å3/Da / Density % sol: 52.6 % |
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Crystal grow | Temperature: 291 K / Method: vapor diffusion, hanging drop / pH: 8 / Details: 16% PEG 3350, 0.1M Tris, 0.2M Ca Acetate / PH range: 6.0-8.5 |
-Data collection
Diffraction | Mean temperature: 273 K / Ambient temp details: LN blow / Serial crystal experiment: N |
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Diffraction source | Source: SYNCHROTRON / Site: APS / Beamline: 22-ID / Wavelength: 1 Å |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Feb 19, 2019 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 1.25→46.03 Å / Num. obs: 128295 / % possible obs: 95.43 % / Redundancy: 2 % / Biso Wilson estimate: 9.5 Å2 / CC1/2: 0.996 / CC star: 0.999 / Rmerge(I) obs: 0.0329 / Rpim(I) all: 0.0329 / Rrim(I) all: 0.0465 / Net I/σ(I): 11.61 |
Reflection shell | Resolution: 1.25→1.295 Å / Redundancy: 2 % / Rmerge(I) obs: 0.4125 / Mean I/σ(I) obs: 1.4 / Num. unique obs: 11969 / CC1/2: 0.555 / CC star: 0.845 / Rpim(I) all: 0.4125 / Rrim(I) all: 0.5834 / % possible all: 80.29 |
-Processing
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: 1M6O Resolution: 1.25→46.03 Å / SU ML: 0.1071 / Cross valid method: FREE R-VALUE / σ(F): 0 / Phase error: 19.0858 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 15.53 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.25→46.03 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group | Refine-ID: X-RAY DIFFRACTION
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