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Open data
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Basic information
Entry | Database: PDB / ID: 7z51 | ||||||||||||||||||||||||||||||
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Title | Tick-borne encephalitis virus Kuutsalo-14 | ||||||||||||||||||||||||||||||
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![]() | VIRUS / virion / membrane protein / glycoprotein | ||||||||||||||||||||||||||||||
Function / homology | ![]() flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / viral capsid / double-stranded RNA binding / nucleoside-triphosphate phosphatase / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / methyltransferase cap1 activity ...flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / viral capsid / double-stranded RNA binding / nucleoside-triphosphate phosphatase / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / methyltransferase cap1 activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / protein dimerization activity / host cell perinuclear region of cytoplasm / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host innate immune response / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / serine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell nucleus / virion membrane / structural molecule activity / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / metal ion binding / membrane Similarity search - Function | ||||||||||||||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||||||||||||||||||||
![]() | Pulkkinen, L.I.A. / Barrass, S.V. / Anastasina, M. / Butcher, S.J. | ||||||||||||||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Molecular Organisation of Tick-Borne Encephalitis Virus. Authors: Lauri I A Pulkkinen / Sarah V Barrass / Aušra Domanska / Anna K Överby / Maria Anastasina / Sarah J Butcher / ![]() ![]() Abstract: Tick-borne encephalitis virus (TBEV) is a pathogenic, enveloped, positive-stranded RNA virus in the family . Structural studies of flavivirus virions have primarily focused on mosquito-borne species, ...Tick-borne encephalitis virus (TBEV) is a pathogenic, enveloped, positive-stranded RNA virus in the family . Structural studies of flavivirus virions have primarily focused on mosquito-borne species, with only one cryo-electron microscopy (cryo-EM) structure of a tick-borne species published. Here, we present a 3.3 Å cryo-EM structure of the TBEV virion of the Kuutsalo-14 isolate, confirming the overall organisation of the virus. We observe conformational switching of the peripheral and transmembrane helices of M protein, which can explain the quasi-equivalent packing of the viral proteins and highlights their importance in stabilising membrane protein arrangement in the virion. The residues responsible for M protein interactions are highly conserved in TBEV but not in the structurally studied Hypr strain, nor in mosquito-borne flaviviruses. These interactions may compensate for the lower number of hydrogen bonds between E proteins in TBEV compared to the mosquito-borne flaviviruses. The structure reveals two lipids bound in the E protein which are important for virus assembly. The lipid pockets are comparable to those recently described in mosquito-borne Zika, Spondweni, Dengue, and Usutu viruses. Our results thus advance the understanding of tick-borne flavivirus architecture and virion-stabilising interactions. | ||||||||||||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 299.5 KB | Display | ![]() |
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PDB format | ![]() | 244.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.9 MB | Display | ![]() |
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Full document | ![]() | 1.9 MB | Display | |
Data in XML | ![]() | 74.2 KB | Display | |
Data in CIF | ![]() | 107.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 14512MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
EM raw data | ![]() Data size: 16.4 TB Data #1: Preparation 2 unaligned movies [micrographs - multiframe] Data #2: Preparation 3 unaligned movies [micrographs - multiframe]) |
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Links
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Assembly
Deposited unit | ![]()
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3 | ![]()
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Components
#1: Protein | Mass: 53558.270 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Strain: Neudoerfl / Cell line: SK-N-SH / Production host: ![]() #2: Protein | Mass: 8311.854 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Strain: Neudoerfl / Cell line: SK-N-SH / Production host: ![]() #3: Polysaccharide | Source method: isolated from a genetically manipulated source #4: Chemical | ChemComp-CPL / Has ligand of interest | N | 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: Tick-borne encephalitis virus / Type: VIRUS Details: Virus was produced in SK-N-SH cells, purified, and inactivated with UV-C. Entity ID: #1-#2 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Details of virus | Empty: NO / Enveloped: YES / Isolate: SPECIES / Type: VIRION |
Natural host | Organism: Homo sapiens |
Buffer solution | pH: 8.5 |
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: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2700 nm / Nominal defocus min: 700 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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Particle selection | Num. of particles selected: 642026 |
Symmetry | Point symmetry: I (icosahedral) |
3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 119210 / Symmetry type: POINT |