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- EMDB-24365: SARS-CoV-2 S bound to S2X259 Fab (local refinement of the RBD/S2X... -

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Basic information

Entry
Database: EMDB / ID: EMD-24365
TitleSARS-CoV-2 S bound to S2X259 Fab (local refinement of the RBD/S2X259 variable domains)
Map dataSharpened map
Sample
  • Complex: Severe acute respiratory syndrome coronavirus 2SARS-CoV-2
    • Complex: S2X259 Fab
      • Protein or peptide: S2X259 Fab heavy chain
      • Protein or peptide: S2X259 Fab light chain
    • Complex: SARS-CoV-2 S
      • Protein or peptide: Spike glycoproteinSpike protein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
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
Methodsingle particle reconstruction / cryo EM
AuthorsVeesler D / Tortorici MA / Seattle Structural Genomics Center for Infectious Disease (SSGCID)
Funding support United States, 1 items
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, 2021-
Header (metadata) releaseAug 4, 2021-
Map releaseAug 4, 2021-
UpdateSep 15, 2021-
Current statusSep 15, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7ral
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7ral
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_24365.png

Downloads & links

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Map

FileDownload / File: emd_24365.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened map
Voxel sizeX=Y=Z: 1.05 Å
Density
Contour LevelBy AUTHOR: 0.7 / Movie #1: 0.7
Minimum - Maximum-2.133496 - 5.7731433
Average (Standard dev.)0.00037195388 (±0.020975927)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 419.99997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.051.051.05
M x/y/z400400400
origin x/y/z0.0000.0000.000
length x/y/z420.000420.000420.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ232232232
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS400400400
D min/max/mean-2.1335.7730.000

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Supplemental data

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Additional map: Unsharpened map

Fileemd_24365_additional_1.map
AnnotationUnsharpened map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map A

Fileemd_24365_half_map_1.map
AnnotationHalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_24365_half_map_2.map
AnnotationHalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Severe acute respiratory syndrome coronavirus 2

EntireName: Severe acute respiratory syndrome coronavirus 2
Components
  • Complex: Severe acute respiratory syndrome coronavirus 2SARS-CoV-2
    • Complex: S2X259 Fab
      • Protein or peptide: S2X259 Fab heavy chain
      • Protein or peptide: S2X259 Fab light chain
    • Complex: SARS-CoV-2 S
      • Protein or peptide: Spike glycoproteinSpike protein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Severe acute respiratory syndrome coronavirus 2

SupramoleculeName: Severe acute respiratory syndrome coronavirus 2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3

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Supramolecule #2: S2X259 Fab

SupramoleculeName: S2X259 Fab / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Homo sapiens (human)

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Supramolecule #3: SARS-CoV-2 S

SupramoleculeName: SARS-CoV-2 S / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #3
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Recombinant expressionOrganism: Homo sapiens (human)

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Macromolecule #1: S2X259 Fab heavy chain

MacromoleculeName: S2X259 Fab heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.755396 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QVQLVQSGAE VKKPGSSVKV SCKASGGIFN TYTISWVRQA PGQGLEWMGR IILMSGMANY AQKIQGRVTI TADKSTSTAY MELTSLRSD DTAVYYCARG FNGNYYGWGD DDAFDIWGQG TLVTVYS

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Macromolecule #2: S2X259 Fab light chain

MacromoleculeName: S2X259 Fab light chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.706813 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QTVLTQPPSV SGAPGQRVTI SCTGSNSNIG AGYDVHWYQQ LPGTAPKLLI CGNSNRPSGV PDRFSGSKSG TSASLAITGL QAEDEADYY CQSYDSSLSG PNWVFGGGTK LTVL

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Macromolecule #3: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 142.427438 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PINLVRDLPQ GFSALEPLVD LPIGINITRF QT LLALHRS YLTPGDSSSG WTAGAAAYYV GYLQPRTFLL KYNENGTITD AVDCALDPLS ETKCTLKSFT VEKGIYQTSN FRV QPTESI VRFPNITNLC PFGEVFNATR FASVYAWNRK RISNCVADYS VLYNSASFST FKCYGVSPTK LNDLCFTNVY ADSF VIRGD EVRQIAPGQT GKIADYNYKL PDDFTGCVIA WNSNNLDSKV GGNYNYLYRL FRKSNLKPFE RDISTEIYQA GSTPC NGVE GFNCYFPLQS YGFQPTNGVG YQPYRVVVLS FELLHAPATV CGPKKSTNLV KNKCVNFNFN GLTGTGVLTE SNKKFL PFQ QFGRDIADTT DAVRDPQTLE ILDITPCSFG GVSVITPGTN TSNQVAVLYQ DVNCTEVPVA IHADQLTPTW RVYSTGS NV FQTRAGCLIG AEHVNNSYEC DIPIGAGICA SYQTQTNSPG SASSVASQSI IAYTMSLGAE NSVAYSNNSI AIPTNFTI S VTTEILPVSM TKTSVDCTMY ICGDSTECSN LLLQYGSFCT QLNRALTGIA VEQDKNTQEV FAQVKQIYKT PPIKDFGGF NFSQILPDPS KPSKRSPIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFG AGPALQIPFP MQMAYRFNGI GVTQNVLYEN QKLIANQFNS AIGKIQDSLS STPSALGKLQ DVVNQNAQAL N TLVKQLSS NFGAISSVLN DILSRLDPPE AEVQIDRLIT GRLQSLQTYV TQQLIRAAEI RASANLAATK MSECVLGQSK RV DFCGKGY HLMSFPQSAP HGVVFLHVTY VPAQEKNFTT APAICHDGKA HFPREGVFVS NGTHWFVTQR NFYEPQIITT DNT FVSGNC DVVIGIVNNT VYDPLQPELD SFKEELDKYF KNHTSPDVDL GDISGINASV VNIQKEIDRL NEVAKNLNES LIDL QELGK YEQGSGYIPE APRDGQAYVR KDGEWVLLST FLGRSLEVLF QGPGHHHHHH HHSAWSHPQF EKGGGSGGGG SGGSA WSHP QFEK

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Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 1 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
Sugar embeddingMaterial: Tris buffer saline
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 70.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING
Final reconstructionNumber images used: 223152

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