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Yorodumi- PDB-8u29: Prefusion structure of the PRD-0038 spike glycoprotein ectodomain... -
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Basic information
| Entry | Database: PDB / ID: 8u29 | |||||||||
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| Title | Prefusion structure of the PRD-0038 spike glycoprotein ectodomain trimer | |||||||||
Components | PRD-0038 Spike glycoprotein | |||||||||
Keywords | VIRAL PROTEIN / Sarbecoviruses / Spike glycoprotein / fusion protein / neutralizing antibodies / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID | |||||||||
| Biological species | Sarbecovirus sp. | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
Authors | Lee, J. / Park, Y.J. / Veesler, D. / Seattle Structural Genomics Center for Infectious Disease (SSGCID) | |||||||||
| Funding support | United States, 1items
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Citation | Journal: Cell Host Microbe / Year: 2023Title: Broad receptor tropism and immunogenicity of a clade 3 sarbecovirus. Authors: Jimin Lee / Samantha K Zepeda / Young-Jun Park / Ashley L Taylor / Joel Quispe / Cameron Stewart / Elizabeth M Leaf / Catherine Treichel / Davide Corti / Neil P King / Tyler N Starr / David Veesler / ![]() Abstract: Although Rhinolophus bats harbor diverse clade 3 sarbecoviruses, the structural determinants of receptor tropism along with the antigenicity of their spike (S) glycoproteins remain uncharacterized. ...Although Rhinolophus bats harbor diverse clade 3 sarbecoviruses, the structural determinants of receptor tropism along with the antigenicity of their spike (S) glycoproteins remain uncharacterized. Here, we show that the African Rhinolophus bat clade 3 sarbecovirus PRD-0038 S has a broad angiotensin-converting enzyme 2 (ACE2) usage and that receptor-binding domain (RBD) mutations further expand receptor promiscuity and enable human ACE2 utilization. We determine a cryo-EM structure of the PRD-0038 RBD bound to Rhinolophus alcyone ACE2, explaining receptor tropism and highlighting differences with SARS-CoV-1 and SARS-CoV-2. Characterization of PRD-0038 S using cryo-EM and monoclonal antibody reactivity reveals its distinct antigenicity relative to SARS-CoV-2 and identifies PRD-0038 cross-neutralizing antibodies for pandemic preparedness. PRD-0038 S vaccination elicits greater titers of antibodies cross-reacting with vaccine-mismatched clade 2 and clade 1a sarbecoviruses compared with SARS-CoV-2 S due to broader antigenic targeting, motivating the inclusion of clade 3 antigens in next-generation vaccines for enhanced resilience to viral evolution. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8u29.cif.gz | 639.4 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8u29.ent.gz | 511.4 KB | Display | PDB format |
| PDBx/mmJSON format | 8u29.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8u29_validation.pdf.gz | 4.3 MB | Display | wwPDB validaton report |
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| Full document | 8u29_full_validation.pdf.gz | 4.4 MB | Display | |
| Data in XML | 8u29_validation.xml.gz | 92.1 KB | Display | |
| Data in CIF | 8u29_validation.cif.gz | 142.9 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/u2/8u29 ftp://data.pdbj.org/pub/pdb/validation_reports/u2/8u29 | HTTPS FTP |
-Related structure data
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Links
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Assembly
| Deposited unit | ![]()
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| 1 |
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Components
| #1: Protein | Mass: 141350.484 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Sarbecovirus sp. / Production host: Homo sapiens (human)#2: 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 #3: Polysaccharide | Source method: isolated from a genetically manipulated source #4: Polysaccharide | Source method: isolated from a genetically manipulated source #5: Sugar | ChemComp-NAG / Has ligand of interest | Y | 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
| Component | Name: PRD-0038 Spike glycoprotein / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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| Source (natural) | Organism: Sarbecovirus sp. |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 8 |
| 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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 0 nm |
| Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| EM software | Name: cryoSPARC / Category: 3D reconstruction |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| Symmetry | Point symmetry: C3 (3 fold cyclic) |
| 3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 103347 / Symmetry type: POINT |
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Sarbecovirus sp.
United States, 1items
Citation





PDBj

Homo sapiens (human)

FIELD EMISSION GUN