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Open data
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Basic information
Entry | Database: PDB / ID: 9co8 | ||||||||||||
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Title | JN.1 spike/Nanosota-9 complex | ||||||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / EBOV glycoprotein / nanobody / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||||||||
Function / homology | ![]() Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / membrane fusion / 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 / 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 | ||||||||||||
Biological species | ![]() ![]() ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.99 Å | ||||||||||||
![]() | Ye, G. / Bu, F. / Liu, B. / Li, F. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Discovery of Nanosota-9 as anti-Omicron nanobody therapeutic candidate. Authors: Gang Ye / Fan Bu / Divyasha Saxena / Hailey Turner-Hubbard / Morgan Herbst / Benjamin Spiller / Brian E Wadzinski / Lanying Du / Bin Liu / Jian Zheng / Fang Li / ![]() Abstract: Omicron subvariants of SARS-CoV-2 continue to pose a significant global health threat. Nanobodies, single-domain antibodies derived from camelids, are promising therapeutic tools against pandemic ...Omicron subvariants of SARS-CoV-2 continue to pose a significant global health threat. Nanobodies, single-domain antibodies derived from camelids, are promising therapeutic tools against pandemic viruses due to their favorable properties. In this study, we identified a novel nanobody, Nanosota-9, which demonstrates high potency against a wide range of Omicron subvariants both in vitro and in a mouse model. Cryo-EM data revealed that Nanosota-9 neutralizes Omicron through a unique mechanism: two Nanosota-9 molecules crosslink two receptor-binding domains (RBDs) of the trimeric Omicron spike protein, preventing the RBDs from binding to the ACE2 receptor. This mechanism explains its strong anti-Omicron potency. Additionally, the Nanosota-9 binding epitopes on the spike protein are relatively conserved among Omicron subvariants, contributing to its broad anti-Omicron spectrum. Combined with our recently developed structure-guided in vitro evolution approach for nanobodies, Nanosota-9 has the potential to serve as the foundation for a superior anti-Omicron therapeutic. | ||||||||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 727.3 KB | Display | ![]() |
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PDB format | ![]() | 585.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 2.3 MB | Display | ![]() |
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Full document | ![]() | 2.3 MB | Display | |
Data in XML | ![]() | 104.6 KB | Display | |
Data in CIF | ![]() | 162.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 45773MC ![]() 9co6C ![]() 9co7C ![]() 9co9C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 139255.891 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Details: JN.1 spike Source: (gene. exp.) ![]() ![]() Gene: S, 2 / Production host: ![]() #2: Antibody | Mass: 16311.601 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #3: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source Has ligand of interest | N | Has protein modification | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||
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Source (recombinant) |
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Buffer solution | pH: 7.4 | ||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1100 nm |
Image recording | Electron dose: 54.8 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
EM software | Name: PHENIX / Version: 1.21.1_5286: / Category: model refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 248315 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | PDB-ID: 8IOS Accession code: 8IOS / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||
Refine LS restraints |
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