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- PDB-7xh8: The structure of ZCB11 Fab against SARS-CoV-2 Omicron Spike -

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Basic information

Entry
Database: PDB / ID: 7xh8
TitleThe structure of ZCB11 Fab against SARS-CoV-2 Omicron Spike
Components
  • Spike glycoprotein
  • The heavy chain of ZCB11 antibody
  • The light chain of ZCB11 antibody
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SARC-CoV-2 Omicron Spike / Fab / Antibody / viral protein / IMMUNE SYSTEM / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / membrane fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / 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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 (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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2 superfamily, coronavirus / 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, coronavirus / Coronavirus spike glycoprotein S2 / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.99 Å
AuthorsHang, L. / Dang, S.
Funding support Hong Kong, 1items
OrganizationGrant numberCountry
The University Grants Committee, Research Grants Council (RGC) Hong Kong
CitationJournal: Nat Commun / Year: 2022
Title: A broadly neutralizing antibody protects Syrian hamsters against SARS-CoV-2 Omicron challenge.
Authors: Biao Zhou / Runhong Zhou / Bingjie Tang / Jasper Fuk-Woo Chan / Mengxiao Luo / Qiaoli Peng / Shuofeng Yuan / Hang Liu / Bobo Wing-Yee Mok / Bohao Chen / Pui Wang / Vincent Kwok-Man Poon / ...Authors: Biao Zhou / Runhong Zhou / Bingjie Tang / Jasper Fuk-Woo Chan / Mengxiao Luo / Qiaoli Peng / Shuofeng Yuan / Hang Liu / Bobo Wing-Yee Mok / Bohao Chen / Pui Wang / Vincent Kwok-Man Poon / Hin Chu / Chris Chung-Sing Chan / Jessica Oi-Ling Tsang / Chris Chun-Yiu Chan / Ka-Kit Au / Hiu-On Man / Lu Lu / Kelvin Kai-Wang To / Honglin Chen / Kwok-Yung Yuen / Shangyu Dang / Zhiwei Chen /
Abstract: The strikingly high transmissibility and antibody evasion of SARS-CoV-2 Omicron variants have posed great challenges to the efficacy of current vaccines and antibody immunotherapy. Here, we screen 34 ...The strikingly high transmissibility and antibody evasion of SARS-CoV-2 Omicron variants have posed great challenges to the efficacy of current vaccines and antibody immunotherapy. Here, we screen 34 BNT162b2-vaccinees and isolate a public broadly neutralizing antibody ZCB11 derived from the IGHV1-58 family. ZCB11 targets viral receptor-binding domain specifically and neutralizes all SARS-CoV-2 variants of concern, especially with great potency against authentic Omicron and Delta variants. Pseudovirus-based mapping of 57 naturally occurred spike mutations or deletions reveals that S371L results in 11-fold neutralization resistance, but it is rescued by compensating mutations in Omicron variants. Cryo-EM analysis demonstrates that ZCB11 heavy chain predominantly interacts with Omicron spike trimer with receptor-binding domain in up conformation blocking ACE2 binding. In addition, prophylactic or therapeutic ZCB11 administration protects lung infection against Omicron viral challenge in golden Syrian hamsters. These results suggest that vaccine-induced ZCB11 is a promising broadly neutralizing antibody for biomedical interventions against pandemic SARS-CoV-2.
History
DepositionApr 7, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 29, 2022Provider: repository / Type: Initial release
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Spike glycoprotein
B: The heavy chain of ZCB11 antibody
C: The light chain of ZCB11 antibody


Theoretical massNumber of molelcules
Total (without water)181,1303
Polymers181,1303
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 133911.969 Da / Num. of mol.: 1
Mutation: deletions, insertions, R682G, R683S, R685S, K986P, V987P
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
#2: Antibody The heavy chain of ZCB11 antibody


Mass: 23790.959 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Antibody The light chain of ZCB11 antibody


Mass: 23427.047 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
Has protein modificationN

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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

Component
IDNameTypeDetailsEntity IDParent-IDSource
1The complex of ZCB11 against Fab SARS-CoV-2 Omicron SpikeCOMPLEXformation of Spike-Fab complex, the Omicron Spike trimer (2.2mg/ml) was mixed with Fab (2.9mg/ml) in 1x PBS buffer at a molar ratio of 1:1.2 (Spike monomer:Fab) and incubated on ice for 40 minutes.all0MULTIPLE SOURCES
2The ZCB11 fabCOMPLEX#2-#31RECOMBINANT
3The spike protein of SARS-CoV-2 Omicron variantCOMPLEX#11RECOMBINANT
Molecular weight
IDEntity assembly-IDExperimental value
11NO
21NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Severe acute respiratory syndrome coronavirus 22697049
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Homo sapiens (human)9606
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE / Humidity: 100 %

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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 FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN
Image recordingAverage exposure time: 4.5 sec. / Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20_4459: / Classification: refinement
EM software
IDNameVersionCategoryDetails
1cryoSPARC2.15particle selection
2EPUimage acquisitionThe EPU was used to automatically collect images.
4cryoSPARC2.15CTF correction
8PHENIXmodel refinement
10cryoSPARC2.15initial Euler assignment
11cryoSPARC2.15final Euler assignment
12RELION3.1classification
13cryoSPARC2.15classification
14cryoSPARC2.153D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 293146 / Symmetry type: POINT

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