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- EMDB-8251: Subtomogram-averaged map of in vitro assembled rubella virus caps... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-8251 | |||||||||
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Title | Subtomogram-averaged map of in vitro assembled rubella virus capsid protein tetramer complex | |||||||||
![]() | Subtomogram-averaged map of in vitro assembled rubella virus capsid protein tetramer complex, unfiltered and unmasked | |||||||||
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Function / homology | ![]() T=4 icosahedral viral capsid / host cell Golgi membrane / host cell mitochondrion / viral nucleocapsid / clathrin-dependent endocytosis of virus by host cell / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / virion membrane / RNA binding ...T=4 icosahedral viral capsid / host cell Golgi membrane / host cell mitochondrion / viral nucleocapsid / clathrin-dependent endocytosis of virus by host cell / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / virion membrane / RNA binding / membrane / metal ion binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | subtomogram averaging / cryo EM / Resolution: 35.0 Å | |||||||||
![]() | Mangala Prasad V / Klose T / Rossmann MG | |||||||||
![]() | ![]() Title: Assembly, maturation and three-dimensional helical structure of the teratogenic rubella virus. Authors: Vidya Mangala Prasad / Thomas Klose / Michael G Rossmann / ![]() Abstract: Viral infections during pregnancy are a significant cause of infant morbidity and mortality. Of these, rubella virus infection is a well-substantiated example that leads to miscarriages or severe ...Viral infections during pregnancy are a significant cause of infant morbidity and mortality. Of these, rubella virus infection is a well-substantiated example that leads to miscarriages or severe fetal defects. However, structural information about the rubella virus has been lacking due to the pleomorphic nature of the virions. Here we report a helical structure of rubella virions using cryo-electron tomography. Sub-tomogram averaging of the surface spikes established the relative positions of the viral glycoproteins, which differed from the earlier icosahedral models of the virus. Tomographic analyses of in vitro assembled nucleocapsids and virions provide a template for viral assembly. Comparisons of immature and mature virions show large rearrangements in the glycoproteins that may be essential for forming the infectious virions. These results present the first known example of a helical membrane-enveloped virus, while also providing a structural basis for its assembly and maturation pathway. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 454 KB | ![]() | |
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Header (meta data) | ![]() ![]() | 11.4 KB 11.4 KB | Display Display | ![]() |
Images | ![]() | 88.3 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 408.3 KB | Display | ![]() |
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Full document | ![]() | 407.9 KB | Display | |
Data in XML | ![]() | 5.1 KB | Display | |
Data in CIF | ![]() | 5.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8248C ![]() 8249C ![]() 8250C ![]() 5khcC ![]() 5kheC ![]() 5khfC C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Subtomogram-averaged map of in vitro assembled rubella virus capsid protein tetramer complex, unfiltered and unmasked | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 5.28 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Rubella virus capsid protein
Entire | Name: Rubella virus capsid protein |
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Components |
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-Supramolecule #1: Rubella virus capsid protein
Supramolecule | Name: Rubella virus capsid protein / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() ![]() |
Molecular weight | Experimental: 256 KDa |
-Macromolecule #1: Rubella virus capsid protein
Macromolecule | Name: Rubella virus capsid protein / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MEDLQKALEA QSRALRAELA AGASQSRRPR PPRQRDSSTS GDDSGRDSGG PRRRRGNRGR GQRRDWSRAP PPPEERQETR SQTPAPKPSR APPQQPQPPR MQTGRGGSAP RPELGPPTNP FQAAVARGLR PPLHDPDTEA PTEACVTSWL WSEGEGAVFY RVDLHFTNLG ...String: MEDLQKALEA QSRALRAELA AGASQSRRPR PPRQRDSSTS GDDSGRDSGG PRRRRGNRGR GQRRDWSRAP PPPEERQETR SQTPAPKPSR APPQQPQPPR MQTGRGGSAP RPELGPPTNP FQAAVARGLR PPLHDPDTEA PTEACVTSWL WSEGEGAVFY RVDLHFTNLG TPPLDEDGRW DPALMYNPCG PEPPAHVVRA YNQPAGDVRG VWGKGERTYA EQDFRVGGTR WHRLLRMPVR GLDGDSAPLP PHTTERIETR SARHPWRIR |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | subtomogram averaging |
Aggregation state | particle |
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Sample preparation
Concentration | 1 mg/mL | |||||||||
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Buffer | pH: 7.2 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON | |||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 90.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 0.005 µm / Nominal magnification: 11000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 35.0 Å / Resolution method: OTHER / Software - Name: PEET (ver. 1.11.0) / Number subtomograms used: 18 |
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Extraction | Number tomograms: 15 / Number images used: 20 / Method: manual picking / Software - Name: IMOD/PEEt (ver. 4.8.40/1.11.0) |
CTF correction | Software - Name: ![]() |
Final angle assignment | Type: OTHER |