+Open data
-Basic information
Entry | Database: PDB / ID: 8h2i | |||||||||
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Title | Near-atomic structure of five-fold averaged PBCV-1 capsid | |||||||||
Components |
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Keywords | VIRAL PROTEIN / giant virus / nucleocytoplasmic large DNA viruses (NCLDVs) / viral assembly / Paramecium bursaria chlorella virus 1 (PBCV-1) / chlorovirus / major capsid protein / minor capsid protein / VIRUS | |||||||||
Function / homology | Function and homology information viral capsid / lipid binding / structural molecule activity / virion membrane / membrane Similarity search - Function | |||||||||
Biological species | Paramecium bursaria Chlorella virus 1 | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
Authors | Shao, Q. / Agarkova, I.V. / Noel, E.A. / Dunigan, D.D. / Liu, Y. / Wang, A. / Guo, M. / Xie, L. / Zhao, X. / Rossmann, M.G. ...Shao, Q. / Agarkova, I.V. / Noel, E.A. / Dunigan, D.D. / Liu, Y. / Wang, A. / Guo, M. / Xie, L. / Zhao, X. / Rossmann, M.G. / Van Etten, J.L. / Klose, T. / Fang, Q. | |||||||||
Funding support | United States, 2items
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Citation | Journal: Nat Commun / Year: 2022 Title: Near-atomic, non-icosahedrally averaged structure of giant virus Paramecium bursaria chlorella virus 1. Authors: Qianqian Shao / Irina V Agarkova / Eric A Noel / David D Dunigan / Yunshu Liu / Aohan Wang / Mingcheng Guo / Linlin Xie / Xinyue Zhao / Michael G Rossmann / James L Van Etten / Thomas Klose / Qianglin Fang / Abstract: Giant viruses are a large group of viruses that infect many eukaryotes. Although components that do not obey the overall icosahedral symmetry of their capsids have been observed and found to play ...Giant viruses are a large group of viruses that infect many eukaryotes. Although components that do not obey the overall icosahedral symmetry of their capsids have been observed and found to play critical roles in the viral life cycles, identities and high-resolution structures of these components remain unknown. Here, by determining a near-atomic-resolution, five-fold averaged structure of Paramecium bursaria chlorella virus 1, we unexpectedly found the viral capsid possesses up to five major capsid protein variants and a penton protein variant. These variants create varied capsid microenvironments for the associations of fibers, a vesicle, and previously unresolved minor capsid proteins. Our structure reveals the identities and atomic models of the capsid components that do not obey the overall icosahedral symmetry and leads to a model for how these components are assembled and initiate capsid assembly, and this model might be applicable to many other giant viruses. | |||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8h2i.cif.gz | 9 MB | Display | PDBx/mmCIF format |
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PDB format | pdb8h2i.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 8h2i.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8h2i_validation.pdf.gz | 3.1 MB | Display | wwPDB validaton report |
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Full document | 8h2i_full_validation.pdf.gz | 3.1 MB | Display | |
Data in XML | 8h2i_validation.xml.gz | 1.1 MB | Display | |
Data in CIF | 8h2i_validation.cif.gz | 1.8 MB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/h2/8h2i ftp://data.pdbj.org/pub/pdb/validation_reports/h2/8h2i | HTTPS FTP |
-Related structure data
Related structure data | 34438MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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3 |
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Symmetry | Point symmetry: (Schoenflies symbol: C5 (5 fold cyclic)) |
-Components
+Protein , 26 types, 177 molecules aaabacadaeafagahaiajakalamanaoapaqarasatauavawaxayazaAaBaCaD...
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Paramecium bursaria Chlorella virus 1 / Type: VIRUS / Entity ID: all / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Paramecium bursaria Chlorella virus 1 |
Details of virus | Empty: NO / Enveloped: NO / Isolate: SPECIES / Type: VIRION |
Buffer solution | pH: 7.8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-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: 4000 nm / Nominal defocus min: 1000 nm |
Image recording | Average exposure time: 8 sec. / Electron dose: 24.4 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 56500 / Symmetry type: POINT |