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- EMDB-30277: Cryo EM map of the interface between NTD of SARS-CoV-2 and 4A8 -

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Basic information

Entry
Database: EMDB / ID: EMD-30277
TitleCryo EM map of the interface between NTD of SARS-CoV-2 and 4A8
Map datacryo EM map of the interface between NTD of SARS-CoV-2 and 4A8
Sample
  • Complex: interface between NTD of SARS-CoV-2 and 4A8
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsYan RH / Zhang YY / Guo YY / Li YN / Xia L / Zhou Q
Funding support China, 3 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31971123 China
National Natural Science Foundation of China (NSFC)31930059 China
National Natural Science Foundation of China (NSFC)81920108015 China
CitationJournal: Science / Year: 2020
Title: A neutralizing human antibody binds to the N-terminal domain of the Spike protein of SARS-CoV-2.
Authors: Xiangyang Chi / Renhong Yan / Jun Zhang / Guanying Zhang / Yuanyuan Zhang / Meng Hao / Zhe Zhang / Pengfei Fan / Yunzhu Dong / Yilong Yang / Zhengshan Chen / Yingying Guo / Jinlong Zhang / ...Authors: Xiangyang Chi / Renhong Yan / Jun Zhang / Guanying Zhang / Yuanyuan Zhang / Meng Hao / Zhe Zhang / Pengfei Fan / Yunzhu Dong / Yilong Yang / Zhengshan Chen / Yingying Guo / Jinlong Zhang / Yaning Li / Xiaohong Song / Yi Chen / Lu Xia / Ling Fu / Lihua Hou / Junjie Xu / Changming Yu / Jianmin Li / Qiang Zhou / Wei Chen /
Abstract: Developing therapeutics against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) could be guided by the distribution of epitopes, not only on the receptor binding domain (RBD) of the ...Developing therapeutics against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) could be guided by the distribution of epitopes, not only on the receptor binding domain (RBD) of the Spike (S) protein but also across the full Spike (S) protein. We isolated and characterized monoclonal antibodies (mAbs) from 10 convalescent COVID-19 patients. Three mAbs showed neutralizing activities against authentic SARS-CoV-2. One mAb, named 4A8, exhibits high neutralization potency against both authentic and pseudotyped SARS-CoV-2 but does not bind the RBD. We defined the epitope of 4A8 as the N-terminal domain (NTD) of the S protein by determining with cryo-eletron microscopy its structure in complex with the S protein to an overall resolution of 3.1 angstroms and local resolution of 3.3 angstroms for the 4A8-NTD interface. This points to the NTD as a promising target for therapeutic mAbs against COVID-19.
History
DepositionMay 8, 2020-
Header (metadata) releaseJul 1, 2020-
Map releaseJul 1, 2020-
UpdateAug 19, 2020-
Current statusAug 19, 2020Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 0.025
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30277.png

Downloads & links

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Map

FileDownload / File: emd_30277.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationcryo EM map of the interface between NTD of SARS-CoV-2 and 4A8
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.09 Å/pix.
x 288 pix.
= 313.056 Å		1.09 Å/pix.
x 288 pix.
= 313.056 Å		1.09 Å/pix.
x 288 pix.
= 313.056 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.087 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.025 / Movie #1: 0.025
Minimum - Maximum-0.07347295 - 0.124248266
Average (Standard dev.)0.0002534746 (±0.0023612755)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 313.056 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0871.0871.087
M x/y/z288288288
origin x/y/z0.0000.0000.000
length x/y/z313.056313.056313.056
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ510510510
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS288288288
D min/max/mean-0.0730.1240.000

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Supplemental data

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Sample components

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Entire : interface between NTD of SARS-CoV-2 and 4A8

EntireName: interface between NTD of SARS-CoV-2 and 4A8
Components
  • Complex: interface between NTD of SARS-CoV-2 and 4A8

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Supramolecule #1: interface between NTD of SARS-CoV-2 and 4A8

SupramoleculeName: interface between NTD of SARS-CoV-2 and 4A8 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Homo sapiens (human)

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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
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: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0.6) / Number images used: 217743
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: MAXIMUM LIKELIHOOD

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