+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-45166 | |||||||||||||||||||||
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Title | TCR - CD3 complex bound to HLA | |||||||||||||||||||||
Map data | ||||||||||||||||||||||
Sample |
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Keywords | T-cell receptor / TCR / 1G4 / nanodisc / CD3 / HLA / NY-ESO-1 / IMMUNE SYSTEM | |||||||||||||||||||||
Function / homology | Function and homology information tRNA threonylcarbamoyladenosine metabolic process / regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / gamma-delta T cell activation / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection ...tRNA threonylcarbamoyladenosine metabolic process / regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / gamma-delta T cell activation / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / Fc-gamma receptor signaling pathway / positive regulation of CD4-positive, alpha-beta T cell proliferation / alpha-beta T cell receptor complex / positive regulation of protein localization to cell surface / positive thymic T cell selection / signal complex assembly / Nef and signal transduction / positive regulation of cell-matrix adhesion / T cell receptor complex / smoothened signaling pathway / establishment or maintenance of cell polarity / positive regulation of interleukin-4 production / protein complex oligomerization / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / dendrite development / alpha-beta T cell activation / Generation of second messenger molecules / immunological synapse / FCGR activation / PD-1 signaling / Role of phospholipids in phagocytosis / T cell receptor binding / negative regulation of smoothened signaling pathway / positive regulation of T cell proliferation / cell surface receptor protein tyrosine kinase signaling pathway / T cell costimulation / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / FCGR3A-mediated IL10 synthesis / cerebellum development / protein tyrosine kinase binding / T cell activation / 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 / apoptotic signaling pathway / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / FCGR3A-mediated phagocytosis / calcium-mediated signaling / 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 / clathrin-coated endocytic vesicle membrane / 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 / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / Regulation of actin dynamics for phagocytic cup formation / 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 / SH3 domain binding / MHC class II protein complex / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / specific granule lumen / positive regulation of type II interferon production / recycling endosome membrane / phagocytic vesicle membrane / positive regulation of cellular senescence / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / negative regulation of epithelial cell proliferation / positive regulation of peptidyl-tyrosine phosphorylation / 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 / transmembrane signaling receptor activity / cell-cell junction / sensory perception of smell / protein transport Similarity search - Function | |||||||||||||||||||||
Biological species | Homo sapiens (human) | |||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||||||||||||||
Authors | Notti RQ / Walz T | |||||||||||||||||||||
Funding support | United States, 6 items
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Citation | Journal: bioRxiv / Year: 2024 Title: The resting and ligand-bound states of the membrane-embedded human T-cell receptor-CD3 complex. Authors: Ryan Q Notti / Fei Yi / Søren Heissel / Martin W Bush / Zaki Molvi / Pujita Das / Henrik Molina / Christopher A Klebanoff / Thomas Walz Abstract: The T-cell receptor (TCR) initiates T-lymphocyte activation, but mechanistic questions remain( ). Here, we present cryogenic electron microscopy structures for the unliganded and human leukocyte ...The T-cell receptor (TCR) initiates T-lymphocyte activation, but mechanistic questions remain( ). Here, we present cryogenic electron microscopy structures for the unliganded and human leukocyte antigen (HLA)-bound human TCR-CD3 complex in nanodiscs that provide a native-like lipid environment. Distinct from the "open and extended" conformation seen in detergent( ), the unliganded TCR-CD3 in nanodiscs adopts two related "closed and compacted" conformations that represent its physiologic resting state . By contrast, the HLA-bound complex adopts the open and extended conformation, and conformation-locking disulfide mutants show that ectodomain opening is necessary for maximal ligand-dependent T-cell activation. Together, these results reveal allosteric conformational change during TCR activation and highlight the importance of native-like lipid environments for membrane protein structure determination. | |||||||||||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_45166.map.gz | 122.6 MB | EMDB map data format | |
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Header (meta data) | emd-45166-v30.xml emd-45166.xml | 29.3 KB 29.3 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_45166_fsc.xml | 13.2 KB | Display | FSC data file |
Images | emd_45166.png | 39.2 KB | ||
Filedesc metadata | emd-45166.cif.gz | 7.8 KB | ||
Others | emd_45166_additional_1.map.gz emd_45166_additional_2.map.gz emd_45166_half_map_1.map.gz emd_45166_half_map_2.map.gz | 208.7 MB 230.1 MB 226.6 MB 226.6 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-45166 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-45166 | HTTPS FTP |
-Validation report
Summary document | emd_45166_validation.pdf.gz | 906.9 KB | Display | EMDB validaton report |
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Full document | emd_45166_full_validation.pdf.gz | 906.5 KB | Display | |
Data in XML | emd_45166_validation.xml.gz | 22.1 KB | Display | |
Data in CIF | emd_45166_validation.cif.gz | 28.7 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-45166 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-45166 | HTTPS FTP |
-Related structure data
Related structure data | 9c3eMC 8tw4C 8tw6C 9bbcC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_45166.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: #1
File | emd_45166_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: #2
File | emd_45166_additional_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_45166_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_45166_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : TCR - CD3 complex in nanodisc bound to NY-ESO-1, B2M, HLA-A*02:01...
+Supramolecule #1: TCR - CD3 complex in nanodisc bound to NY-ESO-1, B2M, HLA-A*02:01...
+Macromolecule #1: TCRa
+Macromolecule #2: TCRb (EGFP fusion)
+Macromolecule #3: T-cell surface glycoprotein CD3 delta chain
+Macromolecule #4: T-cell surface glycoprotein CD3 epsilon chain
+Macromolecule #5: T-cell surface glycoprotein CD3 gamma chain
+Macromolecule #6: T-cell surface glycoprotein CD3 zeta chain
+Macromolecule #7: Cancer/testis antigen 1,Beta-2-microglobulin,MHC class I antigen
+Macromolecule #9: 2-acetamido-2-deoxy-beta-D-glucopyranose
+Macromolecule #10: CHOLESTEROL
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.7 mg/mL | |||||||||
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Buffer | pH: 7.5 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: GRAPHENE OXIDE / Pretreatment - Type: GLOW DISCHARGE | |||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 51.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.0 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 64000 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |