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Yorodumi- PDB-6p5n: Structure of a mammalian 80S ribosome in complex with a single tr... -
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Basic information
| Entry | Database: PDB / ID: 6p5n | ||||||
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| Title | Structure of a mammalian 80S ribosome in complex with a single translocated Israeli Acute Paralysis Virus IRES and eRF1 | ||||||
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Keywords | RIBOSOME / Israeli Acute Paralysis Virus / Internal Ribosome Entry Site / IRES / Small Ribosomal Subunit / 40S / Large Ribosomal Subunit / 60S / 80S / ribosomes / eukaryotic release factor 1 / eRF1 | ||||||
| Function / homology | Function and homology informationribosomal subunit / ubiquitin ligase inhibitor activity / positive regulation of signal transduction by p53 class mediator / 90S preribosome / phagocytic cup / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / translation regulator activity / gastrulation / MDM2/MDM4 family protein binding ...ribosomal subunit / ubiquitin ligase inhibitor activity / positive regulation of signal transduction by p53 class mediator / 90S preribosome / phagocytic cup / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / translation regulator activity / gastrulation / MDM2/MDM4 family protein binding / cytosolic ribosome / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of apoptotic signaling pathway / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / spindle / rRNA processing / antimicrobial humoral immune response mediated by antimicrobial peptide / rhythmic process / positive regulation of canonical Wnt signaling pathway / heparin binding / regulation of translation / large ribosomal subunit / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / defense response to Gram-negative bacterium / perikaryon / killing of cells of another organism / cytosolic large ribosomal subunit / cytoplasmic translation / cell differentiation / tRNA binding / mitochondrial inner membrane / postsynaptic density / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / cell division / DNA repair / mRNA binding / apoptotic process / synapse / dendrite / centrosome / nucleolus / perinuclear region of cytoplasm / endoplasmic reticulum / Golgi apparatus / DNA binding / RNA binding / zinc ion binding / nucleus / cytoplasm / cytosol Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) Israeli acute paralysis virus![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||
Authors | Acosta-Reyes, F.J. / Neupane, R. / Frank, J. / Fernandez, I.S. | ||||||
| Funding support | United States, 1items
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Citation | Journal: EMBO J / Year: 2019Title: The Israeli acute paralysis virus IRES captures host ribosomes by mimicking a ribosomal state with hybrid tRNAs. Authors: Francisco Acosta-Reyes / Ritam Neupane / Joachim Frank / Israel S Fernández / ![]() Abstract: Colony collapse disorder (CCD) is a multi-faceted syndrome decimating bee populations worldwide, and a group of viruses of the widely distributed Dicistroviridae family have been identified as a ...Colony collapse disorder (CCD) is a multi-faceted syndrome decimating bee populations worldwide, and a group of viruses of the widely distributed Dicistroviridae family have been identified as a causing agent of CCD. This family of viruses employs non-coding RNA sequences, called internal ribosomal entry sites (IRESs), to precisely exploit the host machinery for viral protein production. Using single-particle cryo-electron microscopy (cryo-EM), we have characterized how the IRES of Israeli acute paralysis virus (IAPV) intergenic region captures and redirects translating ribosomes toward viral RNA messages. We reconstituted two in vitro reactions targeting a pre-translocation and a post-translocation state of the IAPV-IRES in the ribosome, allowing us to identify six structures using image processing classification methods. From these, we reconstructed the trajectory of IAPV-IRES from the early small subunit recruitment to the final post-translocated state in the ribosome. An early commitment of IRES/ribosome complexes for global pre-translocation mimicry explains the high efficiency observed for this IRES. Efforts directed toward fighting CCD by targeting the IAPV-IRES using RNA-interference technology are underway, and the structural framework presented here may assist in further refining these approaches. | ||||||
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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 | 6p5n.cif.gz | 5.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6p5n.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6p5n.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/p5/6p5n ftp://data.pdbj.org/pub/pdb/validation_reports/p5/6p5n | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 20258MC ![]() 6p4gC ![]() 6p4hC ![]() 6p5iC ![]() 6p5jC ![]() 6p5kC C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-RNA chain , 5 types, 5 molecules 57821
| #1: RNA chain | Mass: 1164741.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #2: RNA chain | Mass: 38385.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #3: RNA chain | Mass: 50143.648 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #47: RNA chain | Mass: 602776.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #82: RNA chain | Mass: 80866.656 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Cell free synthesis. The RNA molecule was made in vitro. Source: (gene. exp.) Israeli acute paralysis virus / Production host: synthetic construct (others) |
+Protein , 76 types, 76 molecules AAABACADAEAFAGAHAIAJALAMANAOAPAQARASATAUAVAWAXAYAZAaAbAcAdAe...
-Protein/peptide , 1 types, 1 molecules An
| #42: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Details
| 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: Structure of a mammalian 80S ribosome in complex with a single translocated Israeli Acute Paralysis Virus IRES and eRF1 Type: RIBOSOME / Entity ID: all / Source: MULTIPLE SOURCES | ||||||||||||||||||||
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| Molecular weight | Experimental value: NO | ||||||||||||||||||||
| Source (natural) | Organism: ![]() | ||||||||||||||||||||
| Buffer solution | pH: 7.5 | ||||||||||||||||||||
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| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Ribosomal complexes for the post-translocated state were assembled at around 600 nM concentration and applied to plasma holey gold grids. | ||||||||||||||||||||
| Specimen support | Details: Plasma cleaning for these holey gold grids was done on a Gatan Solarus with Hydrogen (6.4 sccm gas flow) and Oxygen (27.5 sccm gas flow) and 10 W cleaning power. Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil, UltrAuFoil, R1.2/1.3 | ||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K Details: Blot force = 3s Wait time = 15s Drain time = 0s Blot time = 2.5s |
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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: OTHER |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm / Calibrated defocus min: 1200 nm / Calibrated defocus max: 4900 nm / Cs: 2.7 mm |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 8 sec. / Electron dose: 56.9 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 6904 Details: 3350 out of the 6904 movies were collected at a 35 degree tilt to compensate for preferred orientation that was first identified during screening sessions. |
| EM imaging optics | Energyfilter name: GIF Quantum LS / Energyfilter slit width: 20 eV |
| Image scans | Width: 3710 / Height: 3838 / Movie frames/image: 40 / Used frames/image: 1-40 |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||
| Particle selection | Num. of particles selected: 338929 | |||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||
| 3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 27658 / Symmetry type: POINT |
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About Yorodumi



Homo sapiens (human)
Israeli acute paralysis virus

United States, 1items
Citation
UCSF Chimera




















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