+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-2025 | |||||||||
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Title | CryoEM 3D reconstruction of full Triatoma Virus | |||||||||
Map data | Full TrV particle 3D reconstruction | |||||||||
Sample |
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Keywords | Triatoma virus / Dicistrovirus / 3D reconstruction | |||||||||
Biological species | Triatoma virus | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 15.0 Å | |||||||||
Authors | Neumann E / Agirre J / Goret G / Legoff M / Marti GA / Navaza J / Guerin DMA | |||||||||
Citation | Journal: J Gen Virol / Year: 2013 Title: Cryo-electron microscopy reconstructions of triatoma virus particles: a clue to unravel genome delivery and capsid disassembly. Authors: J Agirre / G Goret / M LeGoff / R Sánchez-Eugenia / G A Marti / J Navaza / D M A Guérin / E Neumann / Abstract: Triatoma virus (TrV) is a member of the insect virus family Dicistroviridae and consists of a small, non-enveloped capsid that encloses its positive-sense ssRNA genome. Using cryo-transmission ...Triatoma virus (TrV) is a member of the insect virus family Dicistroviridae and consists of a small, non-enveloped capsid that encloses its positive-sense ssRNA genome. Using cryo-transmission electron microscopy and three-dimensional reconstruction techniques combined with fitting of the available crystallographic models, this study analysed the capsids corresponding to mature and several RNA-empty TrV particles. After genome release, the resulting reconstruction of the empty capsids displayed no prominent conformational changes with respect to the full virion capsid. The results showed that RNA delivery led to empty capsids with an apparent overall intact protein shell and suggested that, in a subsequent step, empty capsids disassemble into small symmetrical particles. Contrary to what is observed upon genome release in mammalian picornaviruses, the empty TrV capsid maintained a protein shell thickness and size identical to that in full virions. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_2025.map.gz | 9.6 MB | EMDB map data format | |
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Header (meta data) | emd-2025-v30.xml emd-2025.xml | 8 KB 8 KB | Display Display | EMDB header |
Images | image2025.png | 129.2 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-2025 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-2025 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_2025.map.gz / Format: CCP4 / Size: 61.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Full TrV particle 3D reconstruction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.75 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : Full Triatoma Virus
Entire | Name: Full Triatoma Virus |
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Components |
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-Supramolecule #1000: Full Triatoma Virus
Supramolecule | Name: Full Triatoma Virus / type: sample / ID: 1000 / Number unique components: 1 |
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-Supramolecule #1: Triatoma virus
Supramolecule | Name: Triatoma virus / type: virus / ID: 1 / Name.synonym: TrV / NCBI-ID: 103442 / Sci species name: Triatoma virus / Virus type: VIRION / Virus isolate: OTHER / Virus enveloped: No / Virus empty: No / Syn species name: TrV |
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Host (natural) | Organism: Triatoma infestans (insect) / synonym: INVERTEBRATES |
Virus shell | Shell ID: 1 / T number (triangulation number): 1 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 / Details: NMT (10 mM NaCl, 1 mM MgCl2, 50 mM Tris-HCl) |
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Grid | Details: 400 mesh quantifoil grid |
Vitrification | Cryogen name: ETHANE / Instrument: OTHER / Details: Vitrification instrument: Vitrobot FEI |
-Electron microscopy
Microscope | JEOL 2010F |
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Electron beam | Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 1.4 mm / Nominal defocus max: 4.0 µm / Nominal defocus min: 1.2 µm / Nominal magnification: 40000 |
Sample stage | Specimen holder: Side entry liquid nitrogen-cooled cryo specimen holder Specimen holder model: GATAN LIQUID NITROGEN |
Image recording | Category: FILM / Film or detector model: KODAK SO-163 FILM / Digitization - Scanner: ZEISS SCAI / Digitization - Sampling interval: 7 µm / Number real images: 25 |
-Image processing
Final reconstruction | Applied symmetry - Point group: I (icosahedral) / Resolution.type: BY AUTHOR / Resolution: 15.0 Å / Resolution method: FSC 0.5 CUT-OFF / Software - Name: EM3DR2 / Number images used: 1716 |
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