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Open data
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Basic information
| Entry | Database: PDB / ID: 6zqw | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Title | Cryo-EM structure of immature Spondweni virus | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Keywords | VIRUS / Flavivirus | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationribonucleoside triphosphate phosphatase activity / viral capsid / double-stranded RNA binding / methyltransferase cap1 activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / protein dimerization activity / symbiont-mediated suppression of host innate immune response / host cell endoplasmic reticulum membrane / serine-type endopeptidase activity ...ribonucleoside triphosphate phosphatase activity / viral capsid / double-stranded RNA binding / methyltransferase cap1 activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / protein dimerization activity / symbiont-mediated suppression of host innate immune response / host cell endoplasmic reticulum membrane / serine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / fusion of virus membrane with host endosome membrane / symbiont entry into host cell / virion attachment to host cell / host cell nucleus / virion membrane / structural molecule activity / proteolysis / extracellular region / ATP binding / metal ion binding / membrane Similarity search - Function | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Biological species | Spondweni virus | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 7.8 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Authors | Renner, M. / Dejnirattisai, W. / Carrique, L. / Serna Martin, I. / Karia, D. / Ilca, S.L. / Ho, S.F. / Kotecha, A. / Keown, J.R. / Mongkolsapaya, J. ...Renner, M. / Dejnirattisai, W. / Carrique, L. / Serna Martin, I. / Karia, D. / Ilca, S.L. / Ho, S.F. / Kotecha, A. / Keown, J.R. / Mongkolsapaya, J. / Screaton, G.R. / Grimes, J.M. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Funding support | United Kingdom, 5items
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Citation | Journal: Nat Commun / Year: 2021Title: Flavivirus maturation leads to the formation of an occupied lipid pocket in the surface glycoproteins. Authors: Max Renner / Wanwisa Dejnirattisai / Loïc Carrique / Itziar Serna Martin / Dimple Karia / Serban L Ilca / Shu F Ho / Abhay Kotecha / Jeremy R Keown / Juthathip Mongkolsapaya / Gavin R ...Authors: Max Renner / Wanwisa Dejnirattisai / Loïc Carrique / Itziar Serna Martin / Dimple Karia / Serban L Ilca / Shu F Ho / Abhay Kotecha / Jeremy R Keown / Juthathip Mongkolsapaya / Gavin R Screaton / Jonathan M Grimes / ![]() Abstract: Flaviviruses such as Dengue (DENV) or Zika virus (ZIKV) assemble into an immature form within the endoplasmatic reticulum (ER), and are then processed by furin protease in the trans-Golgi. To better ...Flaviviruses such as Dengue (DENV) or Zika virus (ZIKV) assemble into an immature form within the endoplasmatic reticulum (ER), and are then processed by furin protease in the trans-Golgi. To better grasp maturation, we carry out cryo-EM reconstructions of immature Spondweni virus (SPOV), a human flavivirus of the same serogroup as ZIKV. By employing asymmetric localised reconstruction we push the resolution to 3.8 Å, enabling us to refine an atomic model which includes the crucial furin protease recognition site and a conserved Histidine pH-sensor. For direct comparison, we also solve structures of the mature forms of SPONV and DENV to 2.6 Å and 3.1 Å, respectively. We identify an ordered lipid that is present in only the mature forms of ZIKV, SPOV, and DENV and can bind as a consequence of rearranging amphipathic stem-helices of E during maturation. We propose a structural role for the pocket and suggest it stabilizes mature E. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6zqw.cif.gz | 345.3 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb6zqw.ent.gz | 281.3 KB | Display | PDB format |
| PDBx/mmJSON format | 6zqw.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6zqw_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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| Full document | 6zqw_full_validation.pdf.gz | 1.3 MB | Display | |
| Data in XML | 6zqw_validation.xml.gz | 66.3 KB | Display | |
| Data in CIF | 6zqw_validation.cif.gz | 101.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zq/6zqw ftp://data.pdbj.org/pub/pdb/validation_reports/zq/6zqw | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 11372MC ![]() 6zqiC ![]() 6zqjC ![]() 6zquC ![]() 6zqvC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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| 1 | x 60![]()
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Components
| #1: Protein | Mass: 54838.207 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) Spondweni virus / References: UniProt: C8XPB6#2: Protein | Mass: 19070.752 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Spondweni virus / References: UniProt: C8XPB6#3: Sugar | 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: Spondweni virus / Type: VIRUS / Details: Virus cultivated in C6/36 cells / Entity ID: #1-#2 / Source: NATURAL |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Spondweni virus |
| Details of virus | Empty: NO / Enveloped: YES / Isolate: OTHER / Type: VIRION |
| Natural host | Organism: Aedes circumluteolus |
| Buffer solution | pH: 7.4 / Details: PBS buffer |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: UV inactivated |
| Specimen support | Grid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/1 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE-PROPANE |
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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 / Cs: 2.7 mm |
| Image recording | Electron dose: 30 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||||||
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| EM software |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 42880 | ||||||||||||||||||||||||||||
| Symmetry | Point symmetry: I (icosahedral) | ||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 7.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 11768 / Symmetry type: POINT | ||||||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT | ||||||||||||||||||||||||||||
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About Yorodumi




Spondweni virus
United Kingdom, 5items
Citation

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