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- PDB-7lrt: Cryo-EM structure of SARS-CoV-2 spike in complex with neutralizin... -

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Basic information

Entry
Database: PDB / ID: 7lrt
TitleCryo-EM structure of SARS-CoV-2 spike in complex with neutralizing antibody A23-58.1 that targets the receptor-binding domain
Components
  • (antibody A23-58.1 ...) x 2
  • SARS-CoV-2 spike glycoprotein
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Receptor-binding domain / antibody / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / membrane / identical protein binding / plasma membrane
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Severe acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.54 Å
AuthorsZhou, T. / Tsybovsky, T.
CitationJournal: Science / Year: 2021
Title: Ultrapotent antibodies against diverse and highly transmissible SARS-CoV-2 variants.
Authors: Lingshu Wang / Tongqing Zhou / Yi Zhang / Eun Sung Yang / Chaim A Schramm / Wei Shi / Amarendra Pegu / Olamide K Oloniniyi / Amy R Henry / Samuel Darko / Sandeep R Narpala / Christian ...Authors: Lingshu Wang / Tongqing Zhou / Yi Zhang / Eun Sung Yang / Chaim A Schramm / Wei Shi / Amarendra Pegu / Olamide K Oloniniyi / Amy R Henry / Samuel Darko / Sandeep R Narpala / Christian Hatcher / David R Martinez / Yaroslav Tsybovsky / Emily Phung / Olubukola M Abiona / Avan Antia / Evan M Cale / Lauren A Chang / Misook Choe / Kizzmekia S Corbett / Rachel L Davis / Anthony T DiPiazza / Ingelise J Gordon / Sabrina Helmold Hait / Tandile Hermanus / Prudence Kgagudi / Farida Laboune / Kwanyee Leung / Tracy Liu / Rosemarie D Mason / Alexandra F Nazzari / Laura Novik / Sarah O'Connell / Sijy O'Dell / Adam S Olia / Stephen D Schmidt / Tyler Stephens / Christopher D Stringham / Chloe Adrienna Talana / I-Ting Teng / Danielle A Wagner / Alicia T Widge / Baoshan Zhang / Mario Roederer / Julie E Ledgerwood / Tracy J Ruckwardt / Martin R Gaudinski / Penny L Moore / Nicole A Doria-Rose / Ralph S Baric / Barney S Graham / Adrian B McDermott / Daniel C Douek / Peter D Kwong / John R Mascola / Nancy J Sullivan / John Misasi /
Abstract: The emergence of highly transmissible SARS-CoV-2 variants of concern (VOCs) that are resistant to therapeutic antibodies highlights the need for continuing discovery of broadly reactive antibodies. ...The emergence of highly transmissible SARS-CoV-2 variants of concern (VOCs) that are resistant to therapeutic antibodies highlights the need for continuing discovery of broadly reactive antibodies. We identified four receptor binding domain-targeting antibodies from three early-outbreak convalescent donors with potent neutralizing activity against 23 variants, including the B.1.1.7, B.1.351, P.1, B.1.429, B.1.526, and B.1.617 VOCs. Two antibodies are ultrapotent, with subnanomolar neutralization titers [half-maximal inhibitory concentration (IC) 0.3 to 11.1 nanograms per milliliter; IC 1.5 to 34.5 nanograms per milliliter). We define the structural and functional determinants of binding for all four VOC-targeting antibodies and show that combinations of two antibodies decrease the in vitro generation of escape mutants, suggesting their potential in mitigating resistance development.
History
DepositionFeb 17, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 14, 2021Provider: repository / Type: Initial release
Revision 1.1Aug 25, 2021Group: Database references / Category: citation / citation_author / database_2
Item: _citation.journal_volume / _citation_author.identifier_ORCID ..._citation.journal_volume / _citation_author.identifier_ORCID / _citation_author.name / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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  • Deposited structure unit
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  • Superimposition on EM map
  • EMDB-23499
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Structure viewerMolecule:
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Assembly

Deposited unit
F: antibody A23-58.1 heavy chain
G: antibody A23-58.1 light chain
H: antibody A23-58.1 heavy chain
L: antibody A23-58.1 light chain
D: antibody A23-58.1 heavy chain
E: antibody A23-58.1 light chain
A: SARS-CoV-2 spike glycoprotein
B: SARS-CoV-2 spike glycoprotein
C: SARS-CoV-2 spike glycoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)557,93658
Polymers540,5199
Non-polymers17,41749
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area49830 Å2
ΔGint6 kcal/mol
Surface area206570 Å2

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Components

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Protein , 1 types, 3 molecules ABC

#3: Protein SARS-CoV-2 spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 132334.469 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Plasmid: pVRC8400 / Cell line (production host): HEK 293F / Production host: Homo sapiens (human) / References: UniProt: P0DTC2

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Antibody , 2 types, 6 molecules FHDGLE

#1: Antibody antibody A23-58.1 heavy chain


Mass: 24363.426 Da / Num. of mol.: 3 / Fragment: Fab
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Plasmid: pVRC8400 / Cell line (production host): HEK 293F / Production host: Homo sapiens (human)
#2: Antibody antibody A23-58.1 light chain


Mass: 23475.006 Da / Num. of mol.: 3 / Fragment: Fab
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Plasmid: pVRC8400 / Cell line (production host): HEK 293F / Production host: Homo sapiens (human)

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Sugars , 4 types, 49 molecules

#4: 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.: 4
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#5: 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.: 15
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#6: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#7: 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 / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 27 / Source method: obtained synthetically / Formula: C8H15NO6
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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Details

Has ligand of interestN

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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: SARS-CoV-2 spike in complex with neutralizing antibody A789-58.1
Type: COMPLEX
Details: The complex was prepared by mixing SARS-CoV-2 spike protein and Fab fragment of antibody A789-58.1 at a molar ratio of 1:3.6.
Entity ID: #1-#3 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.539951 MDa / Experimental value: NO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: Complex at 0.5 mg/mL concentration in the presence of 0.005% DDM
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K / Details: Blot for 4 seconds before plugging.

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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 FIELDBright-field microscopy / Nominal magnification: 105000 X / Nominal defocus max: 2100 nm / Nominal defocus min: 1100 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 40 e/Å2 / Film or detector model: OTHER

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Processing

SoftwareName: PHENIX / Version: 1.19_4092: / Classification: refinement
EM software
IDNameVersionCategory
1cryoSPARC2.15particle selection
4cryoSPARC2.15CTF correction
7Coot0.93model fitting
9PHENIX1.19model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.54 Å / Resolution method: FSC 0.5 CUT-OFF / Num. of particles: 123016 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL
Atomic model buildingPDB-ID: 7KMS

7kms

Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00434227
ELECTRON MICROSCOPYf_angle_d0.59746584
ELECTRON MICROSCOPYf_dihedral_angle_d6.1175016
ELECTRON MICROSCOPYf_chiral_restr0.0455502
ELECTRON MICROSCOPYf_plane_restr0.0055902

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