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- PDB-7ral: SARS-CoV-2 S bound to S2X259 Fab (local refinement of the RBD/S2X... -

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Basic information

Entry
Database: PDB / ID: 7ral
TitleSARS-CoV-2 S bound to S2X259 Fab (local refinement of the RBD/S2X259 variable domains)
Components
  • S2X259 Fab heavy chain
  • S2X259 Fab light chain
  • Spike glycoproteinSpike protein
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Spike glycoprotein / Fab S2X259 / VIRAL PROTEIN / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID / 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
AuthorsVeesler, D. / Tortorici, M.A. / Seattle Structural Genomics Center for Infectious Disease (SSGCID)
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: Nature / Year: 2021
Title: Broad sarbecovirus neutralization by a human monoclonal antibody.
Authors: M Alejandra Tortorici / Nadine Czudnochowski / Tyler N Starr / Roberta Marzi / Alexandra C Walls / Fabrizia Zatta / John E Bowen / Stefano Jaconi / Julia Di Iulio / Zhaoqian Wang / Anna De ...Authors: M Alejandra Tortorici / Nadine Czudnochowski / Tyler N Starr / Roberta Marzi / Alexandra C Walls / Fabrizia Zatta / John E Bowen / Stefano Jaconi / Julia Di Iulio / Zhaoqian Wang / Anna De Marco / Samantha K Zepeda / Dora Pinto / Zhuoming Liu / Martina Beltramello / Istvan Bartha / Michael P Housley / Florian A Lempp / Laura E Rosen / Exequiel Dellota / Hannah Kaiser / Martin Montiel-Ruiz / Jiayi Zhou / Amin Addetia / Barbara Guarino / Katja Culap / Nicole Sprugasci / Christian Saliba / Eneida Vetti / Isabella Giacchetto-Sasselli / Chiara Silacci Fregni / Rana Abdelnabi / Shi-Yan Caroline Foo / Colin Havenar-Daughton / Michael A Schmid / Fabio Benigni / Elisabetta Cameroni / Johan Neyts / Amalio Telenti / Herbert W Virgin / Sean P J Whelan / Gyorgy Snell / Jesse D Bloom / Davide Corti / David Veesler / Matteo Samuele Pizzuto /
Abstract: The recent emergence of SARS-CoV-2 variants of concern and the recurrent spillovers of coronaviruses into the human population highlight the need for broadly neutralizing antibodies that are not ...The recent emergence of SARS-CoV-2 variants of concern and the recurrent spillovers of coronaviruses into the human population highlight the need for broadly neutralizing antibodies that are not affected by the ongoing antigenic drift and that can prevent or treat future zoonotic infections. Here we describe a human monoclonal antibody designated S2X259, which recognizes a highly conserved cryptic epitope of the receptor-binding domain and cross-reacts with spikes from all clades of sarbecovirus. S2X259 broadly neutralizes spike-mediated cell entry of SARS-CoV-2, including variants of concern (B.1.1.7, B.1.351, P.1, and B.1.427/B.1.429), as well as a wide spectrum of human and potentially zoonotic sarbecoviruses through inhibition of angiotensin-converting enzyme 2 (ACE2) binding to the receptor-binding domain. Furthermore, deep-mutational scanning and in vitro escape selection experiments demonstrate that S2X259 possesses an escape profile that is limited to a single substitution, G504D. We show that prophylactic and therapeutic administration of S2X259 protects Syrian hamsters (Mesocricetus auratus) against challenge with the prototypic SARS-CoV-2 and the B.1.351 variant of concern, which suggests that this monoclonal antibody is a promising candidate for the prevention and treatment of emergent variants and zoonotic infections. Our data reveal a key antigenic site that is targeted by broadly neutralizing antibodies and will guide the design of vaccines that are effective against all sarbecoviruses.
History
DepositionJul 1, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 4, 2021Provider: repository / Type: Initial release
Revision 1.1Sep 15, 2021Group: Database references / Category: citation / citation_author / database_2
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Assembly

Deposited unit
H: S2X259 Fab heavy chain
L: S2X259 Fab light chain
B: Spike glycoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)168,1114
Polymers167,8903
Non-polymers2211
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Antibody S2X259 Fab heavy chain


Mass: 13755.396 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#2: Antibody S2X259 Fab light chain


Mass: 11706.813 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Protein Spike glycoprotein / Spike protein / S glycoprotein / E2 / Peplomer protein


Mass: 142427.438 Da / Num. of mol.: 1
Mutation: R682G, R683S, R685S, F817P, A892P, A899P, A942P, K986P, V987P
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
#4: 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.: 1 / Source method: obtained synthetically / 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
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

Component
IDNameTypeEntity IDParent-IDSource
1Severe acute respiratory syndrome coronavirus 2SARS-CoV-2COMPLEX#1-#30MULTIPLE SOURCES
2S2X259 FabCOMPLEX#1-#21RECOMBINANT
3SARS-CoV-2 SCOMPLEX#31RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
13Severe acute respiratory syndrome coronavirus 22697049
22Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
13Homo sapiens (human)9606
22Homo sapiens (human)9606
Details of virusEmpty: YES / Enveloped: YES / Isolate: OTHER / Type: VIRUS-LIKE PARTICLE
Buffer solutionpH: 8
SpecimenEmbedding applied: YES / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
EM embeddingMaterial: Tris buffer saline
VitrificationCryogen name: ETHANE

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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
Image recordingElectron dose: 70 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionNum. of particles: 223152 / Symmetry type: POINT

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