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- PDB-9bbc: TCR GDN detergent micelle -

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Basic information

Entry
Database: PDB / ID: 9bbc
TitleTCR GDN detergent micelle
Components
  • (T-cell surface glycoprotein CD3 ...) x 4
  • TCRa
  • TCRb
KeywordsIMMUNE SYSTEM / T-cell receptor / TCR / 1G4 / nanodisc / CD3
Function / homology
Function and homology information


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 / CD4-positive, alpha-beta T cell proliferation / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / negative thymic T cell selection ...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 / CD4-positive, alpha-beta T cell proliferation / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / 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 / positive regulation of cell-matrix adhesion / T cell receptor complex / establishment or maintenance of cell polarity / smoothened signaling pathway / positive regulation of interleukin-4 production / 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 / positive regulation of T cell proliferation / negative regulation of smoothened signaling pathway / cell surface receptor protein tyrosine kinase signaling pathway / T cell costimulation / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / T cell activation / FCGR3A-mediated IL10 synthesis / cerebellum development / protein tyrosine kinase binding / apoptotic signaling pathway / FCGR3A-mediated phagocytosis / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / protein complex oligomerization / Regulation of actin dynamics for phagocytic cup formation / SH3 domain binding / positive regulation of type II interferon production / positive regulation of peptidyl-tyrosine phosphorylation / transmembrane signaling receptor activity / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / cell-cell junction / protein transport / Cargo recognition for clathrin-mediated endocytosis / signaling receptor complex adaptor activity / Downstream TCR signaling / Clathrin-mediated endocytosis / T cell receptor signaling pathway / cell body / protein-containing complex assembly / regulation of apoptotic process / adaptive immune response / dendritic spine / 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 / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / identical protein binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
CD3 gamma/delta subunit, Ig-like domain / T-cell surface glycoprotein CD3 delta chain / T-cell surface glycoprotein CD3 zeta subunit / Ig-like domain on T-cell surface glycoprotein CD3 epsilon chain / CD3 protein, epsilon/gamma/delta subunit / T-cell surface glycoprotein CD3 zeta subunit/High affinity IgE receptor gamma subunit / T-cell surface glycoprotein CD3 zeta chain / Immunoreceptor tyrosine-based activation motif / Phosphorylated immunoreceptor signalling ITAM / ITAM motif mammalian type profile. ...CD3 gamma/delta subunit, Ig-like domain / T-cell surface glycoprotein CD3 delta chain / T-cell surface glycoprotein CD3 zeta subunit / Ig-like domain on T-cell surface glycoprotein CD3 epsilon chain / CD3 protein, epsilon/gamma/delta subunit / T-cell surface glycoprotein CD3 zeta subunit/High affinity IgE receptor gamma subunit / T-cell surface glycoprotein CD3 zeta chain / Immunoreceptor tyrosine-based activation motif / Phosphorylated immunoreceptor signalling ITAM / ITAM motif mammalian type profile. / Immunoreceptor tyrosine-based activation motif / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
CHOLESTEROL / T-cell surface glycoprotein CD3 delta chain / T-cell surface glycoprotein CD3 epsilon chain / T-cell surface glycoprotein CD3 gamma chain / T-cell surface glycoprotein CD3 zeta chain
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsNotti, R.Q. / Walz, T.
Funding support United States, 6items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)T32CA9207 United States
National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS)KL2TR001865 United States
National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS)UL1TR001866 United States
Other privateBlack Family Metastasis Center United States
Shapiro-Silverberg Fund for the Advancement of Translational Research United States
The Mark FoundationWalz-Notti Aspire United States
CitationJournal: 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
DepositionApr 5, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 2, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: TCRa
B: TCRb
D: T-cell surface glycoprotein CD3 delta chain
E: T-cell surface glycoprotein CD3 epsilon chain
F: T-cell surface glycoprotein CD3 epsilon chain
G: T-cell surface glycoprotein CD3 gamma chain
X: T-cell surface glycoprotein CD3 zeta chain
Y: T-cell surface glycoprotein CD3 zeta chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)186,44220
Polymers181,9548
Non-polymers4,48812
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein TCRa


Mass: 30301.111 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293F / Production host: Homo sapiens (human)
#2: Protein TCRb


Mass: 33687.016 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293F / Production host: Homo sapiens (human)

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T-cell surface glycoprotein CD3 ... , 4 types, 6 molecules DEFGXY

#3: Protein T-cell surface glycoprotein CD3 delta chain / T-cell receptor T3 delta chain


Mass: 18949.537 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD3D, T3D / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P04234
#4: Protein T-cell surface glycoprotein CD3 epsilon chain / T-cell surface antigen T3/Leu-4 epsilon chain


Mass: 23174.227 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD3E, T3E / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P07766
#5: Protein T-cell surface glycoprotein CD3 gamma chain / T-cell receptor T3 gamma chain


Mass: 15220.763 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD3G, T3G / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P09693
#6: Protein T-cell surface glycoprotein CD3 zeta chain / T-cell receptor T3 zeta chain


Mass: 18723.439 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD247, CD3Z, T3Z, TCRZ / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P20963

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Sugars , 3 types, 10 molecules

#7: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#8: 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


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#9: 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.: 5
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
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

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Non-polymers , 1 types, 2 molecules

#10: Chemical ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C27H46O / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: TCR in GDN micelles / Type: COMPLEX / Entity ID: #3-#4, #6 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Strain: HEK293F
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMSodium ChlorideNaCl1
225 mMHEPES1
30.02 %GDN1
SpecimenConc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: 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
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 64000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm / Cs: 0 mm
Image recordingElectron dose: 51 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21_5207: / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 252000 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0038621
ELECTRON MICROSCOPYf_angle_d0.91611734
ELECTRON MICROSCOPYf_dihedral_angle_d9.2711639
ELECTRON MICROSCOPYf_chiral_restr0.0511393
ELECTRON MICROSCOPYf_plane_restr0.0041464

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