+Open data
-Basic information
Entry | Database: PDB / ID: 6oj0 | ||||||
---|---|---|---|---|---|---|---|
Title | Cryo-EM reconstruction of Sulfolobus polyhedral virus 1 (SPV1) | ||||||
Components |
| ||||||
Keywords | VIRUS / archaeal pilus / STRUCTURAL PROTEIN / icosahedral symmetry | ||||||
Function / homology | icosahedral viral capsid / Capsid protein VP10 / Capsid protein VP4 Function and homology information | ||||||
Biological species | Sulfolobus polyhedral virus 1 | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||
Authors | Wang, F. / Liu, Y. / Conway, J.F. / Krupovic, M. / Prangishvili, D. / Egelman, E.H. | ||||||
Funding support | United States, 1items
| ||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2019 Title: A packing for A-form DNA in an icosahedral virus. Authors: Fengbin Wang / Ying Liu / Zhangli Su / Tomasz Osinski / Guilherme A P de Oliveira / James F Conway / Stefan Schouten / Mart Krupovic / David Prangishvili / Edward H Egelman / Abstract: Studies on viruses infecting archaea living in the most extreme environments continue to show a remarkable diversity of structures, suggesting that the sampling continues to be very sparse. We have ...Studies on viruses infecting archaea living in the most extreme environments continue to show a remarkable diversity of structures, suggesting that the sampling continues to be very sparse. We have used electron cryo-microscopy to study at 3.7-Å resolution the structure of the polyhedral virus 1 (SPV1), which was originally isolated from a hot, acidic spring in Beppu, Japan. The 2 capsid proteins with variant single jelly-roll folds form pentamers and hexamers which assemble into a = 43 icosahedral shell. In contrast to tailed icosahedral double-stranded DNA (dsDNA) viruses infecting bacteria and archaea, and herpesviruses infecting animals and humans, where naked DNA is packed under very high pressure due to the repulsion between adjacent layers of DNA, the circular dsDNA in SPV1 is fully covered with a viral protein forming a nucleoprotein filament with attractive interactions between layers. Most strikingly, we have been able to show that the DNA is in an A-form, as it is in the filamentous viruses infecting hyperthermophilic acidophiles. Previous studies have suggested that DNA is in the B-form in bacteriophages, and our study is a direct visualization of the structure of DNA in an icosahedral virus. | ||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6oj0.cif.gz | 1.2 MB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb6oj0.ent.gz | 1 MB | Display | PDB format |
PDBx/mmJSON format | 6oj0.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6oj0_validation.pdf.gz | 1.1 MB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 6oj0_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 6oj0_validation.xml.gz | 170.3 KB | Display | |
Data in CIF | 6oj0_validation.cif.gz | 259.7 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/oj/6oj0 ftp://data.pdbj.org/pub/pdb/validation_reports/oj/6oj0 | HTTPS FTP |
-Related structure data
Related structure data | 20083MC M: map data used to model this data C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
| x 60
2 |
|
3 |
| x 5
4 |
| x 6
5 |
|
Symmetry | Point symmetry: (Schoenflies symbol: I (icosahedral)) |
-Components
#1: Protein | Mass: 19394.885 Da / Num. of mol.: 42 / Source method: isolated from a natural source / Source: (natural) Sulfolobus polyhedral virus 1 / References: UniProt: A0A1W6I187 #2: Protein | | Mass: 20617.277 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sulfolobus polyhedral virus 1 / References: UniProt: A0A1W6I162 |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Sulfolobus spindle-shaped virus 1 / Type: VIRUS / Entity ID: all / Source: NATURAL |
---|---|
Source (natural) | Organism: Sulfolobus spindle-shaped virus 1 |
Details of virus | Empty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION |
Natural host | Organism: Sulfolobus sp. S38A |
Buffer solution | pH: 4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
---|---|
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 |
Image recording | Electron dose: 20 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement |
---|---|
EM software | Name: RELION / Category: 3D reconstruction |
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.7 Å / Resolution method: OTHER / Num. of particles: 19092 / Details: d99, model:map FSC (0.38), map:map FSC (0.143) / Symmetry type: POINT |