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Open data
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Basic information
| Entry | Database: PDB / ID: 8auv | |||||||||
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| Title | Cryo-EM structure of the plant 40S subunit | |||||||||
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Keywords | RIBOSOME / Plant / 80S / Modifications | |||||||||
| Function / homology | Function and homology informationcellular response to abscisic acid stimulus / seed germination / positive regulation of signal transduction / MAP-kinase scaffold activity / negative regulation of translational frameshifting / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translation regulator activity / rescue of stalled cytosolic ribosome / protein kinase C binding ...cellular response to abscisic acid stimulus / seed germination / positive regulation of signal transduction / MAP-kinase scaffold activity / negative regulation of translational frameshifting / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translation regulator activity / rescue of stalled cytosolic ribosome / protein kinase C binding / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / rRNA processing / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / mRNA binding / ubiquitin protein ligase binding / nucleolus / RNA binding / zinc ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.38 Å | |||||||||
Authors | Smirnova, J. / Loerke, J. / Kleinau, G. / Schmidt, A. / Buerger, J. / Meyer, E.H. / Mielke, T. / Scheerer, P. / Bock, R. / Spahn, C.M.T. / Zoschke, R. | |||||||||
| Funding support | Germany, 2items
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Citation | Journal: Nat Plants / Year: 2023Title: Structure of the actively translating plant 80S ribosome at 2.2 Å resolution. Authors: Julia Smirnova / Justus Loerke / Gunnar Kleinau / Andrea Schmidt / Jörg Bürger / Etienne H Meyer / Thorsten Mielke / Patrick Scheerer / Ralph Bock / Christian M T Spahn / Reimo Zoschke / ![]() Abstract: In plant cells, translation occurs in three compartments: the cytosol, the plastids and the mitochondria. While the structures of the (prokaryotic-type) ribosomes in plastids and mitochondria are ...In plant cells, translation occurs in three compartments: the cytosol, the plastids and the mitochondria. While the structures of the (prokaryotic-type) ribosomes in plastids and mitochondria are well characterized, high-resolution structures of the eukaryotic 80S ribosomes in the cytosol have been lacking. Here the structure of translating tobacco (Nicotiana tabacum) 80S ribosomes was solved by cryo-electron microscopy with a global resolution of 2.2 Å. The ribosome structure includes two tRNAs, decoded mRNA and the nascent peptide chain, thus providing insights into the molecular underpinnings of the cytosolic translation process in plants. The map displays conserved and plant-specific rRNA modifications and the positions of numerous ionic cofactors, and it uncovers the role of monovalent ions in the decoding centre. The model of the plant 80S ribosome enables broad phylogenetic comparisons that reveal commonalities and differences in the ribosomes of plants and those of other eukaryotes, thus putting our knowledge about eukaryotic translation on a firmer footing. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8auv.cif.gz | 3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8auv.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8auv.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8auv_validation.pdf.gz | 1.6 MB | Display | wwPDB validaton report |
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| Full document | 8auv_full_validation.pdf.gz | 1.7 MB | Display | |
| Data in XML | 8auv_validation.xml.gz | 161.1 KB | Display | |
| Data in CIF | 8auv_validation.cif.gz | 273.8 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/au/8auv ftp://data.pdbj.org/pub/pdb/validation_reports/au/8auv | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 15674MC ![]() 8azwC ![]() 8b2lC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
+Protein , 33 types, 33 molecules AklCDEFGHIJKLMNOPQRSTUVWXYZabc...
-RNA chain , 2 types, 2 molecules hB
| #3: RNA chain | Mass: 583622.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #35: RNA chain | Mass: 3629.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 6 types, 2502 molecules 










| #36: Chemical | ChemComp-MG / #37: Chemical | ChemComp-K / #38: Chemical | ChemComp-SPD / | #39: Chemical | #40: Chemical | #41: Water | ChemComp-HOH / | |
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-Details
| Has ligand of interest | N |
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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: 40S subunit of the cytosolic 80S ribosome from tobacco Type: RIBOSOME / Entity ID: #1-#35 / Source: NATURAL |
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| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 8 |
| 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: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
| Electron lens | Mode: OTHER / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm |
| Image recording | Electron dose: 27 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| CTF correction | Type: NONE |
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| 3D reconstruction | Resolution: 2.38 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 335672 / Symmetry type: POINT |
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FIELD EMISSION GUN