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- EMDB-23151: Cryo-EM map of NTD-directed neutralizing antibody 2-51 in complex... -

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Entry
Database: EMDB / ID: EMD-23151
TitleCryo-EM map of NTD-directed neutralizing antibody 2-51 in complex with prefusion SARS-CoV-2 spike glycoprotein
Map data
SampleCryo-EM map of NTD-directed neutralizing antibody 2-51 in complex with prefusion SARS-CoV-2 spike glycoprotein
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.71 Å
AuthorsRapp M / Shapiro L / Cerutti G
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.
Validation ReportSummary, Full report, XML, About validation report
History
DepositionDec 17, 2020-
Header (metadata) releaseApr 14, 2021-
Map releaseApr 14, 2021-
UpdateApr 14, 2021-
Current statusApr 14, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.132
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.132
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_23151.map.gz / Format: CCP4 / Size: 216 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 384 pix.
= 410.88 Å
1.07 Å/pix.
x 384 pix.
= 410.88 Å
1.07 Å/pix.
x 384 pix.
= 410.88 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.07 Å
Density
Contour LevelBy AUTHOR: 0.132 / Movie #1: 0.132
Minimum - Maximum-0.09417185 - 0.36400932
Average (Standard dev.)0.0009951001 (±0.014922007)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 410.88 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.071.071.07
M x/y/z384384384
origin x/y/z0.0000.0000.000
length x/y/z410.880410.880410.880
α/β/γ90.00090.00090.000
start NX/NY/NZ10510593
NX/NY/NZ143147156
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS384384384
D min/max/mean-0.0940.3640.001

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Supplemental data

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Segmentation: #1

Fileemd_23151_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: Half map A

Fileemd_23151_half_map_1.map
AnnotationHalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: Half map B

Fileemd_23151_half_map_2.map
AnnotationHalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Sample components

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Entire Cryo-EM map of NTD-directed neutralizing antibody 2-51 in complex...

EntireName: Cryo-EM map of NTD-directed neutralizing antibody 2-51 in complex with prefusion SARS-CoV-2 spike glycoprotein
Number of components: 1

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Component #1: protein, Cryo-EM map of NTD-directed neutralizing antibody 2-51 i...

ProteinName: Cryo-EM map of NTD-directed neutralizing antibody 2-51 in complex with prefusion SARS-CoV-2 spike glycoprotein
Recombinant expression: No
SourceSpecies: Homo sapiens (human)
Source (engineered)Expression System: Homo sapiens (human)

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Experimental details

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Sample preparation

SpecimenSpecimen state: Particle / Method: cryo EM
Sample solutionpH: 5.5
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
ImagingMicroscope: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Electron dose: 41.92 e/Å2 / Illumination mode: FLOOD BEAM
LensImaging mode: BRIGHT FIELD
Specimen HolderModel: OTHER
CameraDetector: OTHER

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Image processing

ProcessingMethod: single particle reconstruction / Number of projections: 190557
3D reconstructionResolution: 3.71 Å / Resolution method: FSC 0.143 CUT-OFF

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