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Open data
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Basic information
Entry | Database: PDB / ID: 8tw6 | |||||||||||||||||||||
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Title | TCR in nanodisc ND-II | |||||||||||||||||||||
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![]() | IMMUNE SYSTEM / T-cell receptor / TCR / 1G4 / nanodisc / CD3 | |||||||||||||||||||||
Function / homology | ![]() detection of tumor cell / regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / positive regulation of T cell anergy / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / CD4-positive, alpha-beta T cell proliferation ...detection of tumor cell / regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / positive regulation of T cell anergy / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / 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 / T cell mediated cytotoxicity directed against tumor cell target / positive regulation of cell-matrix adhesion / T cell receptor complex / smoothened signaling pathway / establishment or maintenance of cell polarity / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / positive regulation of interleukin-4 production / dendrite development / protein complex oligomerization / alpha-beta T cell activation / Generation of second messenger molecules / FCGR activation / immunological synapse / Co-inhibition by PD-1 / Role of phospholipids in phagocytosis / T cell receptor binding / positive regulation of T cell proliferation / T cell costimulation / positive regulation of interleukin-2 production / cerebellum development / FCGR3A-mediated IL10 synthesis / positive regulation of calcium-mediated signaling / T cell activation / bioluminescence / cell surface receptor protein tyrosine kinase signaling pathway / protein tyrosine kinase binding / generation of precursor metabolites and energy / negative regulation of smoothened signaling pathway / FCGR3A-mediated phagocytosis / apoptotic signaling pathway / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / SH3 domain binding / Regulation of actin dynamics for phagocytic cup formation / positive regulation of type II interferon production / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / transmembrane signaling receptor activity / protein transport / cell-cell junction / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / signaling receptor complex adaptor activity / T cell receptor signaling pathway / signaling receptor activity / Clathrin-mediated endocytosis / cell body / protein-containing complex assembly / regulation of apoptotic process / dendritic spine / adaptive immune response / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / protein heterodimerization activity / external side of plasma membrane / negative regulation of gene expression / positive regulation of gene expression / protein kinase binding / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / identical protein binding / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||||||||||||||
![]() | Notti, R.Q. / Walz, T. | |||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() 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
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 190.6 KB | Display | ![]() |
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PDB format | ![]() | 129.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 41660MC ![]() 8tw4C ![]() 9bbcC ![]() 9c3eC C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-T-cell surface glycoprotein CD3 ... , 4 types, 6 molecules YXEFDG
#1: Protein | Mass: 46650.879 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: CD247 / Production host: ![]() #4: Protein | Mass: 23174.227 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #5: Protein | | Mass: 18949.537 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Protein | | Mass: 21598.633 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Protein , 2 types, 2 molecules AB
#2: Protein | Mass: 30388.189 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#3: Protein | Mass: 62042.883 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: TRBV6-5, TRB, mCherry / Production host: ![]() References: UniProt: A0A0K0K1A5, UniProt: P0DTU4, UniProt: A0A4D6FVK6 |
-Sugars , 2 types, 2 molecules 
#7: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source |
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#9: Sugar | ChemComp-NAG / |
-Non-polymers , 1 types, 2 molecules 
#8: Chemical |
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-Details
Has ligand of interest | Y |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: TCR hetero-octamer in lipid nanodisc / Type: COMPLEX / Entity ID: #1-#6 / Source: MULTIPLE SOURCES | |||||||||||||||
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Molecular weight | Experimental value: NO | |||||||||||||||
Source (natural) | Organism: ![]() | |||||||||||||||
Source (recombinant) | Organism: ![]() | |||||||||||||||
Buffer solution | pH: 7.5 | |||||||||||||||
Buffer component |
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Specimen | Conc.: 0.33 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||
Specimen support | Grid material: COPPER / Grid type: Quantifoil R1.2/1.3 | |||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 64000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 0 mm |
Image recording | Electron dose: 57 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
EM software | Name: PHENIX / Version: 1.21_5207: / Category: model refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 797000 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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