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- PDB-7c2l: S protein of SARS-CoV-2 in complex bound with 4A8 -

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Basic information

Entry
Database: PDB / ID: 7c2l
TitleS protein of SARS-CoV-2 in complex bound with 4A8
Components
  • Spike glycoprotein
  • heavy chain of 4A8
  • light chain of 4A8
KeywordsMEMBRANE PROTEIN/IMMUNE SYSTEM / ACE2-B0AT1 complex / MEMBRANE PROTEIN / MEMBRANE PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


host cell endoplasmic reticulum-Golgi intermediate compartment membrane / host cell surface receptor binding / viral entry into host cell / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / pathogenesis / host cell plasma membrane / virion membrane / integral component of membrane
Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S2 / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S2, coronavirus / Spike receptor binding domain, betacoronavirus / Spike glycoprotein, heptad repeat 2, coronavirus / Spike receptor binding domain superfamily, coronavirus
Spike glycoprotein
Biological speciesSevere acute respiratory syndrome coronavirus 2
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsYan, R.H. / Zhang, Y.Y. / Guo, Y.Y. / Li, Y.N. / Xia, L. / Zhou, Q.
Funding support China, 3items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31971123 China
National Natural Science Foundation of China (NSFC)81920108015 China
National Natural Science Foundation of China (NSFC)31930059 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 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) ...Developing therapeutics against 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 ten convalescent COVID-19 patients. Three mAbs showed neutralizing activities against authentic SARS-CoV-2. An 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 its cryo-EM structure in complex with the S protein to an overall resolution of 3.1 Angstrom and local resolution of 3.3 Angstrom for the 4A8-NTD interface. This points to the NTD as a promising target for therapeutic mAbs against COVID-19.
Validation Report
SummaryFull reportAbout validation report
History
DepositionMay 8, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 1, 2020Provider: repository / Type: Initial release
Revision 1.1Jul 8, 2020Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name

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Structure visualization

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Assembly

Deposited unit
A: Spike glycoprotein
B: Spike glycoprotein
C: Spike glycoprotein
H: heavy chain of 4A8
L: light chain of 4A8
I: heavy chain of 4A8
M: light chain of 4A8
J: heavy chain of 4A8
N: light chain of 4A8
hetero molecules


Theoretical massNumber of molelcules
Total (without water)669,54998
Polymers649,8629
Non-polymers19,68889
Water0
1


TypeNameSymmetry operationNumber
identity operation1_5551
Buried area60280 Å2
ΔGint-24 kcal/mol
Surface area211620 Å2

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Components

#1: Protein Spike glycoprotein


Mass: 142502.594 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2*PLUS
#2: Antibody heavy chain of 4A8


Mass: 50097.188 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Antibody light chain of 4A8


Mass: 24020.750 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#4: Sugar...
ChemComp-NAG / N-ACETYL-D-GLUCOSAMINE


Mass: 221.208 Da / Num. of mol.: 89
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: S protein of SARS-CoV-2 in complex bound with 4A8 / Type: COMPLEX / Entity ID: 1, 2, 3 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: RELION / Version: 3.0.6 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 171673 / Symmetry type: POINT

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