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- PDB-7b17: SARS-CoV-spike RBD bound to two neutralising nanobodies. -

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Basic information

Entry
Database: PDB / ID: 7b17
TitleSARS-CoV-spike RBD bound to two neutralising nanobodies.
Components
  • SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama,SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama
  • Spike protein S1
KeywordsVIRAL PROTEIN / spike glycoprotein / SARS-CoV-2 / nanobody
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 / entry receptor-mediated virion attachment to host cell ...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 / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / 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 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Vicugna pacos (alpaca)
Lama glama (llama)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.01 Å
AuthorsHallberg, B.M. / Das, H.
CitationJournal: Science / Year: 2021
Title: Structure-guided multivalent nanobodies block SARS-CoV-2 infection and suppress mutational escape.
Authors: Paul-Albert Koenig / Hrishikesh Das / Hejun Liu / Beate M Kümmerer / Florian N Gohr / Lea-Marie Jenster / Lisa D J Schiffelers / Yonas M Tesfamariam / Miki Uchima / Jennifer D Wuerth / Karl ...Authors: Paul-Albert Koenig / Hrishikesh Das / Hejun Liu / Beate M Kümmerer / Florian N Gohr / Lea-Marie Jenster / Lisa D J Schiffelers / Yonas M Tesfamariam / Miki Uchima / Jennifer D Wuerth / Karl Gatterdam / Natalia Ruetalo / Maria H Christensen / Caroline I Fandrey / Sabine Normann / Jan M P Tödtmann / Steffen Pritzl / Leo Hanke / Jannik Boos / Meng Yuan / Xueyong Zhu / Jonathan L Schmid-Burgk / Hiroki Kato / Michael Schindler / Ian A Wilson / Matthias Geyer / Kerstin U Ludwig / B Martin Hällberg / Nicholas C Wu / Florian I Schmidt /
Abstract: The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to spread, with devastating consequences. For passive immunization efforts, nanobodies have size and cost ...The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to spread, with devastating consequences. For passive immunization efforts, nanobodies have size and cost advantages over conventional antibodies. In this study, we generated four neutralizing nanobodies that target the receptor binding domain of the SARS-CoV-2 spike protein. We used x-ray crystallography and cryo-electron microscopy to define two distinct binding epitopes. On the basis of these structures, we engineered multivalent nanobodies with more than 100 times the neutralizing activity of monovalent nanobodies. Biparatopic nanobody fusions suppressed the emergence of escape mutants. Several nanobody constructs neutralized through receptor binding competition, whereas other monovalent and biparatopic nanobodies triggered aberrant activation of the spike fusion machinery. These premature conformational changes in the spike protein forestalled productive fusion and rendered the virions noninfectious.
History
DepositionNov 23, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Feb 10, 2021Provider: repository / Type: Initial release
Revision 1.1Feb 24, 2021Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation_author.identifier_ORCID
Revision 1.2Apr 28, 2021Group: Database references / Category: citation_author / Item: _citation_author.identifier_ORCID
Revision 1.3May 26, 2021Group: Structure summary / Category: struct / Item: _struct.title
Revision 1.4Jun 2, 2021Group: Source and taxonomy / Structure summary / Category: entity / entity_name_com / entity_src_gen
Item: _entity.details / _entity.pdbx_description / _entity_src_gen.gene_src_common_name
Revision 1.5Dec 21, 2022Group: Database references / Category: citation / database_2
Item: _citation.title / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.6Oct 23, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Spike protein S1
B: SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama,SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama
hetero molecules


Theoretical massNumber of molelcules
Total (without water)52,2263
Polymers52,0042
Non-polymers2211
Water00
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area3860 Å2
ΔGint-7 kcal/mol
Surface area20180 Å2
MethodPISA

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Components

#1: Protein Spike protein S1


Mass: 21901.570 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2
#2: Antibody SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama,SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama


Mass: 30102.807 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue ...Details: Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker, 1-119 nanobody from Alpacka, 120-136: linker, 137-263: nanobody from Llama, 264-283: cloning and purification tag,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker, 1-119 nanobody from Alpacka, 120-136: linker, 137-263: nanobody from Llama, 264-283: cloning and purification tag
Source: (gene. exp.) Vicugna pacos (alpaca), (gene. exp.) Lama glama (llama)
Production host: Escherichia coli (E. coli)
#3: 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.: 1 / 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
Has ligand of interestN
Has protein modificationY

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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

Component
IDNameTypeDetailsEntity IDParent-IDSource
1Structure of SARS-CoV-2 spike RBD in complex with SARS-CoV-2 neutralizing biparatopic nanobody VECOMPLEXDensity from localised reconstruction from full spike - VE data.#1-#20MULTIPLE SOURCES
2Spike glycoproteinCOMPLEX#11RECOMBINANT
3biparatopic nanobody VECOMPLEX#21RECOMBINANT
Molecular weightValue: 0.3 MDa / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Severe acute respiratory syndrome coronavirus 22697049
23Vicugna pacos (alpaca)30538
33Lama glama (llama)9844
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23Escherichia coli (E. coli)562
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Alignment procedure: ZEMLIN TABLEAU
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1.5 sec. / Electron dose: 48.6 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
7Cootmodel fitting
9cryoSPARC2.15initial Euler assignment
10cryoSPARC2.15final Euler assignment
11cryoSPARC2.15classification
12cryoSPARC2.153D reconstruction
13PHENIX1.9model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.01 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 92938 / Algorithm: BACK PROJECTION / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL

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