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- EMDB-23490: Cryo-EM structure of NTD-directed neutralizing antibody 2-17 Fab ... -

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Basic information

Entry
Database: EMDB / ID: EMD-23490
TitleCryo-EM structure of NTD-directed neutralizing antibody 2-17 Fab in complex with SARS-CoV-2 S2P spike
Map dataSharpened map
Sample
  • Complex: 2-17 Fab in complex with SARS-CoV-2 S2P spike
    • Protein or peptide: 2-17 Heavy Chain
    • Protein or peptide: 2-17 Light Chain
    • 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 speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.47 Å
AuthorsGorman J / Rapp M / Kwong PD / Shapiro L
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)U24 GM129539 United States
Other privateSF349247 United States
CitationJournal: Cell Host Microbe / Year: 2021
Title: Potent SARS-CoV-2 neutralizing antibodies directed against spike N-terminal domain target a single supersite.
Authors: Gabriele Cerutti / Yicheng Guo / Tongqing Zhou / Jason Gorman / Myungjin Lee / Micah Rapp / Eswar R Reddem / Jian Yu / Fabiana Bahna / Jude Bimela / Yaoxing Huang / Phinikoula S Katsamba / ...Authors: Gabriele Cerutti / Yicheng Guo / Tongqing Zhou / Jason Gorman / Myungjin Lee / Micah Rapp / Eswar R Reddem / Jian Yu / Fabiana Bahna / Jude Bimela / Yaoxing Huang / Phinikoula S Katsamba / Lihong Liu / Manoj S Nair / Reda Rawi / Adam S Olia / Pengfei Wang / Baoshan Zhang / Gwo-Yu Chuang / David D Ho / Zizhang Sheng / Peter D Kwong / Lawrence Shapiro /
Abstract: Numerous antibodies that neutralize SARS-CoV-2 have been identified, and these generally target either the receptor-binding domain (RBD) or the N-terminal domain (NTD) of the viral spike. While RBD- ...Numerous antibodies that neutralize SARS-CoV-2 have been identified, and these generally target either the receptor-binding domain (RBD) or the N-terminal domain (NTD) of the viral spike. While RBD-directed antibodies have been extensively studied, far less is known about NTD-directed antibodies. Here, we report cryo-EM and crystal structures for seven potent NTD-directed neutralizing antibodies in complex with spike or isolated NTD. These structures defined several antibody classes, with at least one observed in multiple convalescent donors. The structures revealed that all seven antibodies target a common surface, bordered by glycans N17, N74, N122, and N149. This site-formed primarily by a mobile β-hairpin and several flexible loops-was highly electropositive, located at the periphery of the spike, and the largest glycan-free surface of NTD facing away from the viral membrane. Thus, in contrast to neutralizing RBD-directed antibodies that recognize multiple non-overlapping epitopes, potent NTD-directed neutralizing antibodies appear to target a single supersite.
History
DepositionFeb 15, 2021-
Header (metadata) releaseMar 24, 2021-
Map releaseMar 24, 2021-
UpdateMay 26, 2021-
Current statusMay 26, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.25
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  • Surface level: 0.25
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  • Surface view with fitted model
  • Atomic models: PDB-7lqw
  • Surface level: 0.25
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7lqw
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23490.png

Downloads & links

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Map

FileDownload / File: emd_23490.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened map
Voxel sizeX=Y=Z: 1.058 Å
Density
Contour LevelBy AUTHOR: 0.09 / Movie #1: 0.25
Minimum - Maximum-0.16933617 - 0.83011365
Average (Standard dev.)0.0007118538 (±0.031312373)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 423.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0581.0581.058
M x/y/z400400400
origin x/y/z0.0000.0000.000
length x/y/z423.200423.200423.200
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ360360360
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS400400400
D min/max/mean-0.1690.8300.001

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Supplemental data

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Mask #1

Fileemd_23490_msk_1.map
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Additional map: Local sharpened map

Fileemd_23490_additional_1.map
AnnotationLocal sharpened map
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Additional map: unsharpened map

Fileemd_23490_additional_2.map
Annotationunsharpened map
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Additional map: #1

Fileemd_23490_additional_3.map
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Additional map: Full map density modified with resolve

Fileemd_23490_additional_4.map
AnnotationFull map density modified with resolve
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Additional map: Local refinement density modified with resolve

Fileemd_23490_additional_5.map
AnnotationLocal refinement density modified with resolve
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Half map: #2

Fileemd_23490_half_map_1.map
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Half map: #1

Fileemd_23490_half_map_2.map
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Sample components

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Entire : 2-17 Fab in complex with SARS-CoV-2 S2P spike

EntireName: 2-17 Fab in complex with SARS-CoV-2 S2P spike
Components
  • Complex: 2-17 Fab in complex with SARS-CoV-2 S2P spike
    • Protein or peptide: 2-17 Heavy Chain
    • Protein or peptide: 2-17 Light Chain
    • Protein or peptide: Spike glycoproteinSpike protein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: 2-17 Fab in complex with SARS-CoV-2 S2P spike

SupramoleculeName: 2-17 Fab in complex with SARS-CoV-2 S2P spike / 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: 2-17 Heavy Chain

MacromoleculeName: 2-17 Heavy Chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.329279 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QVQLVQSGAE VKKPGSSVKV SCKASGGTFS SYAISWVRQA PGQGLEWMGG NIPIFGTANY AQKFQGRVTI TADESTSTAY MELSSLRSE DTAVYYCARG VGYRGVIPLN WFDPWGQGTV VTVSSASTKG PSVFPLAPSS KSTSGGTAAL GCLVKDYFPE P VTVSWNSG ...String:
QVQLVQSGAE VKKPGSSVKV SCKASGGTFS SYAISWVRQA PGQGLEWMGG NIPIFGTANY AQKFQGRVTI TADESTSTAY MELSSLRSE DTAVYYCARG VGYRGVIPLN WFDPWGQGTV VTVSSASTKG PSVFPLAPSS KSTSGGTAAL GCLVKDYFPE P VTVSWNSG ALTSGVHTFP AVLQSSGLYS LSSVVTVPSS SLGTQTYICN VNHKPSNTKV DKKVEPKSCD KTH

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Macromolecule #2: 2-17 Light Chain

MacromoleculeName: 2-17 Light Chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.441014 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EIVMTQSPAT LSVSPGERAT LSCRASQSVS SDLAWYQHKP GQAPRLLIYG ASTRATGIPV RFSGSGSGTE FTLTISSLQS EDFAVYYCQ QYNNWPPFTF GGGTKVEIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD ...String:
EIVMTQSPAT LSVSPGERAT LSCRASQSVS SDLAWYQHKP GQAPRLLIYG ASTRATGIPV RFSGSGSGTE FTLTISSLQS EDFAVYYCQ QYNNWPPFTF GGGTKVEIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD SKDSTYSLSS TLTLSKADYE KHKVYACEVT HQGLSSPVTK SFNRGEC

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Macromolecule #3: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 144.106422 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGILPSPGMP ALLSLVSLLS VLLMGCVAET GTQCVNLTTR TQLPPAYTNS FTRGVYYPDK VFRSSVLHST QDLFLPFFSN VTWFHAIHV SGTNGTKRFD NPVLPFNDGV YFASTEKSNI IRGWIFGTTL DSKTQSLLIV NNATNVVIKV CEFQFCNDPF L GVYYHKNN ...String:
MGILPSPGMP ALLSLVSLLS VLLMGCVAET GTQCVNLTTR TQLPPAYTNS FTRGVYYPDK VFRSSVLHST QDLFLPFFSN VTWFHAIHV SGTNGTKRFD NPVLPFNDGV YFASTEKSNI IRGWIFGTTL DSKTQSLLIV NNATNVVIKV CEFQFCNDPF L GVYYHKNN KSWMESEFRV YSSANNCTFE YVSQPFLMDL EGKQGNFKNL REFVFKNIDG YFKIYSKHTP INLVRDLPQG FS ALEPLVD LPIGINITRF QTLLALHRSY LTPGDSSSGW TAGAAAYYVG YLQPRTFLLK YNENGTITDA VDCALDPLSE TKC TLKSFT VEKGIYQTSN FRVQPTESIV RFPNITNLCP FGEVFNATRF ASVYAWNRKR ISNCVADYSV LYNSASFSTF KCYG VSPTK LNDLCFTNVY ADSFVIRGDE VRQIAPGQTG KIADYNYKLP DDFTGCVIAW NSNNLDSKVG GNYNYLYRLF RKSNL KPFE RDISTEIYQA GSTPCNGVEG FNCYFPLQSY GFQPTNGVGY QPYRVVVLSF ELLHAPATVC GPKKSTNLVK NKCVNF NFN GLTGTGVLTE SNKKFLPFQQ FGRDIADTTD AVRDPQTLEI LDITPCSFGG VSVITPGTNT SNQVAVLYQD VNCTEVP VA IHADQLTPTW RVYSTGSNVF QTRAGCLIGA EHVNNSYECD IPIGAGICAS YQTQTNSPGS ASSVASQSII AYTMSLGA E NSVAYSNNSI AIPTNFTISV TTEILPVSMT KTSVDCTMYI CGDSTECSNL LLQYGSFCTQ LNRALTGIAV EQDKNTQEV FAQVKQIYKT PPIKDFGGFN FSQILPDPSK PSKRSFIEDL LFNKVTLADA GFIKQYGDCL GDIAARDLIC AQKFNGLTVL PPLLTDEMI AQYTSALLAG TITSGWTFGA GAALQIPFAM QMAYRFNGIG VTQNVLYENQ KLIANQFNSA IGKIQDSLSS T ASALGKLQ DVVNQNAQAL NTLVKQLSSN FGAISSVLND ILSRLDPPEA EVQIDRLITG RLQSLQTYVT QQLIRAAEIR AS ANLAATK MSECVLGQSK RVDFCGKGYH LMSFPQSAPH GVVFLHVTYV PAQEKNFTTA PAICHDGKAH FPREGVFVSN GTH WFVTQR NFYEPQIITT DNTFVSGNCD VVIGIVNNTV YDPLQPELDS FKEELDKYFK NHTSPDVDLG DISGINASVV NIQK EIDRL NEVAKNLNES LIDLQELGKY EQGSGYIPEA PRDGQAYVRK DGEWVLLSTF LGRSLEVLFQ GPGHHHHHHH HSAWS HPQF EKGGGSGGGG SGGSAWSHPQ FEK

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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: 26 / 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

Concentration1 mg/mL
BufferpH: 5.5 / Component - Formula: PBS
GridModel: C-flat-1.2/1.3 / Material: COPPER
VitrificationCryogen name: ETHANE
DetailsPBS with sodium acetate, pH 5.5

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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 K3 (6k x 4k) / Average electron dose: 51.69 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6xm0

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 4.47 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 29767

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Atomic model buiding 1

RefinementProtocol: FLEXIBLE FIT
Output model

PDB-7lqw:
Cryo-EM structure of NTD-directed neutralizing antibody 2-17 Fab in complex with SARS-CoV-2 S2P spike

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