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Open data
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Basic information
| Entry | Database: PDB / ID: 7pkz | |||||||||
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| Title | Vault structure in committed conformation | |||||||||
Components | Major vault protein | |||||||||
Keywords | STRUCTURAL PROTEIN / Transport | |||||||||
| Function / homology | Function and homology informationprotein activation cascade / ERBB signaling pathway / Neutrophil degranulation / negative regulation of epidermal growth factor receptor signaling pathway / protein phosphatase binding / cytoskeleton / cell population proliferation / ribonucleoprotein complex / protein kinase binding / perinuclear region of cytoplasm ...protein activation cascade / ERBB signaling pathway / Neutrophil degranulation / negative regulation of epidermal growth factor receptor signaling pathway / protein phosphatase binding / cytoskeleton / cell population proliferation / ribonucleoprotein complex / protein kinase binding / perinuclear region of cytoplasm / identical protein binding / nucleus / cytoplasm Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 9.8 Å | |||||||||
Authors | Guerra, P. / Gonzalez-Alamos, M. / Llauro, A. / Casanas, A. / Querol-Audi, J. / de Pablo, P. / Verdaguer, N. | |||||||||
| Funding support | Spain, 2items
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Citation | Journal: Sci Adv / Year: 2022Title: Symmetry disruption commits vault particles to disassembly. Authors: Pablo Guerra / María González-Alamos / Aida Llauró / Arnau Casañas / Jordi Querol-Audí / Pedro J de Pablo / Núria Verdaguer / ![]() Abstract: Vaults are ubiquitous ribonucleoprotein particles involved in a diversity of cellular processes, with promising applications as nanodevices for delivery of multiple cargos. The vault shell is ...Vaults are ubiquitous ribonucleoprotein particles involved in a diversity of cellular processes, with promising applications as nanodevices for delivery of multiple cargos. The vault shell is assembled by the symmetrical association of multiple copies of the major vault protein that, initially, generates half vaults. The pairwise, anti-parallel association of two half vaults produces whole vaults. Here, using a combination of vault recombinant reconstitution and structural techniques, we characterized the molecular determinants for the vault opening process. This process commences with a relaxation of the vault waist, causing the expansion of the inner cavity. Then, local disengagement of amino-terminal domains at the vault midsection seeds a conformational change that leads to the aperture, facilitating access to the inner cavity where cargo is hosted. These results inform a hitherto uncharacterized step of the vault cycle and will aid current engineering efforts leveraging vault for tailored cargo delivery. | |||||||||
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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 | 7pkz.cif.gz | 9.8 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb7pkz.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 7pkz.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/pk/7pkz ftp://data.pdbj.org/pub/pdb/validation_reports/pk/7pkz | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 13483MC ![]() 7pkrC ![]() 7pkyC 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 |
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Components
| #1: Protein | Mass: 95922.062 Da / Num. of mol.: 78 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Trichoplusia ni (cabbage looper) / References: UniProt: Q62667 |
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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: major vault protein from Rattus norvegicus / Type: CELL / Entity ID: all / Source: RECOMBINANT | |||||||||||||||||||||||||
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| Source (natural) | Organism: ![]() | |||||||||||||||||||||||||
| Source (recombinant) | Organism: Trichoplusia ni (cabbage looper) | |||||||||||||||||||||||||
| Buffer solution | pH: 7.5 | |||||||||||||||||||||||||
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| Specimen | Conc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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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 |
| Image recording | Electron dose: 41.9 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||
| 3D reconstruction | Resolution: 9.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 20864 / Symmetry type: POINT | ||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT | ||||||||||||
| Atomic model building | PDB-ID: 4HL8 Accession code: 4HL8 / Source name: PDB / Type: experimental model |
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Spain, 2items
Citation
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Trichoplusia ni (cabbage looper)

