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- EMDB-24708: Cryo-EM structure of NTD-directed neutralizing antibody 5-7 in co... -

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Basic information

Entry
Database: EMDB / ID: EMD-24708
TitleCryo-EM structure of NTD-directed neutralizing antibody 5-7 in complex with prefusion SARS-CoV-2 spike glycoprotein
Map data
Sample
  • Complex: Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab
    • Protein or peptide: Spike glycoprotein
    • Protein or peptide: 5-7 heavy chain
    • Protein or peptide: 5-7 light chain
  • 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 / 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 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsCerutti G / Shapiro L
Funding support China, 1 items
OrganizationGrant numberCountry
Jack Ma Foundation China
CitationJournal: bioRxiv / Year: 2021
Title: Neutralizing antibody 5-7 defines a distinct site of vulnerability in SARS-CoV-2 spike N-terminal domain.
Authors: Gabriele Cerutti / Yicheng Guo / Pengfei Wang / Manoj S Nair / Yaoxing Huang / Jian Yu / Lihong Liu / Phinikoula S Katsamba / Fabiana Bahna / Eswar R Reddem / Peter D Kwong / David D Ho / ...Authors: Gabriele Cerutti / Yicheng Guo / Pengfei Wang / Manoj S Nair / Yaoxing Huang / Jian Yu / Lihong Liu / Phinikoula S Katsamba / Fabiana Bahna / Eswar R Reddem / Peter D Kwong / David D Ho / Zizhang Sheng / Lawrence Shapiro
Abstract: Antibodies that potently neutralize SARS-CoV-2 target mainly the receptor-binding domain or the N-terminal domain (NTD). Over a dozen potently neutralizing NTD-directed antibodies have been studied ...Antibodies that potently neutralize SARS-CoV-2 target mainly the receptor-binding domain or the N-terminal domain (NTD). Over a dozen potently neutralizing NTD-directed antibodies have been studied structurally, and all target a single antigenic supersite in NTD (site 1). Here we report the 3.7 Å resolution cryo-EM structure of a potent NTD-directed neutralizing antibody 5-7, which recognizes a site distinct from other potently neutralizing antibodies, inserting a binding loop into an exposed hydrophobic pocket between the two sheets of the NTD β-sandwich. Interestingly, this pocket has been previously identified as the binding site for hydrophobic molecules including heme metabolites, but we observe their presence to not substantially impede 5-7 recognition. Mirroring its distinctive binding, antibody 5-7 retains a distinctive neutralization potency with variants of concern (VOC). Overall, we reveal a hydrophobic pocket in NTD proposed for immune evasion can actually be used by the immune system for recognition.
HIGHLIGHTS: Cryo-EM structure of neutralizing antibody 5-7 in complex with SARS CoV-2 spike5-7 recognizes NTD outside of the previously identified antigenic supersite5-7 binds to a site known to ...HIGHLIGHTS: Cryo-EM structure of neutralizing antibody 5-7 in complex with SARS CoV-2 spike5-7 recognizes NTD outside of the previously identified antigenic supersite5-7 binds to a site known to accommodate numerous hydrophobic ligandsStructural basis of 5-7 neutralization tolerance to some variants of concern.
History
DepositionAug 19, 2021-
Header (metadata) releaseSep 1, 2021-
Map releaseSep 1, 2021-
UpdateNov 30, 2022-
Current statusNov 30, 2022Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.3
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.3
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  • Surface view with fitted model
  • Atomic models: PDB-7rw2
  • Surface level: 0.3
  • Imaged by UCSF Chimera
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_24708.png

Downloads & links

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Map

FileDownload / File: emd_24708.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 400 pix.
= 428. Å		1.07 Å/pix.
x 400 pix.
= 428. Å		1.07 Å/pix.
x 400 pix.
= 428. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.07 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3 / Movie #1: 0.3
Minimum - Maximum-2.4878857 - 3.4750414
Average (Standard dev.)-0.00033621804 (±0.058423363)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 428.00003 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.071.071.07
M x/y/z400400400
origin x/y/z0.0000.0000.000
length x/y/z428.000428.000428.000
α/β/γ90.00090.00090.000
start NX/NY/NZ-225-225-225
NX/NY/NZ450450450
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS400400400
D min/max/mean-2.4883.475-0.000

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Supplemental data

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Additional map: Local refinement map

Fileemd_24708_additional_1.map
AnnotationLocal refinement map
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AxesZYX

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Additional map: Unsharpened map

Fileemd_24708_additional_2.map
AnnotationUnsharpened map
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Additional map: Density-modified composite map: global and local refinement maps...

Fileemd_24708_additional_3.map
AnnotationDensity-modified composite map: global and local refinement maps combined
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AxesZYX

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Half map: #2

Fileemd_24708_half_map_1.map
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Half map: #1

Fileemd_24708_half_map_2.map
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Sample components

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Entire : Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab

EntireName: Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab
Components
  • Complex: Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab
    • Protein or peptide: Spike glycoprotein
    • Protein or peptide: 5-7 heavy chain
    • Protein or peptide: 5-7 light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab

SupramoleculeName: Prefusion SARS-CoV-2 spike glycoprotein in complex with 5-7 Fab
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 142.399375 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 KPSKRSFIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFG AGAALQIPFA MQMAYRFNGI GVTQNVLYEN QKLIANQFNS AIGKIQDSLS STASALGKLQ 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 #2: 5-7 heavy chain

MacromoleculeName: 5-7 heavy chain / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 27.018072 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QVQLVQSGAE VKKPGASVKV SCKASGYTFT SYYMHWVRQA PGQGLEWMGV INPSGGSTSY AEKFRGRVTM TRDTSTSTVY MELSSLRSE DTAVYYCARD REPHSDSSGY WDSLKYYYYY ALDVWGQGTT VTVSSASTKG PSVFPLAPSS KSTSGGTAAL G CLVKDYFP ...String:
QVQLVQSGAE VKKPGASVKV SCKASGYTFT SYYMHWVRQA PGQGLEWMGV INPSGGSTSY AEKFRGRVTM TRDTSTSTVY MELSSLRSE DTAVYYCARD REPHSDSSGY WDSLKYYYYY ALDVWGQGTT VTVSSASTKG PSVFPLAPSS KSTSGGTAAL G CLVKDYFP EPVTVSWNSG ALTSGVHTFP AVLQSSGLYS LSSVVTVPSS SLGTQTYICN VNHKPSNTKV DKKVEPKSCD KT HHHHHHH H

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Macromolecule #3: 5-7 light chain

MacromoleculeName: 5-7 light chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.220752 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AIQLTQSPSS LSASVGDRVT ITCRASQGIS SYLAWYQQKP GKAPELLIYA ASTLQSGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QLNTYPFTFG PGTKVDIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String:
AIQLTQSPSS LSASVGDRVT ITCRASQGIS SYLAWYQQKP GKAPELLIYA ASTLQSGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QLNTYPFTFG PGTKVDIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGEC

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Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 48 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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: 4.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 42.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 50866
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC

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Atomic model buiding 1

RefinementProtocol: FLEXIBLE FIT
Output model

PDB-7rw2:
Cryo-EM structure of NTD-directed neutralizing antibody 5-7 in complex with prefusion SARS-CoV-2 spike glycoprotein

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