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Open data
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Basic information
| Entry | Database: PDB / ID: 6snt | ||||||||||||||||||||||||||||||||||||||||||
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| Title | Yeast 80S ribosome stalled on SDD1 mRNA. | ||||||||||||||||||||||||||||||||||||||||||
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Keywords | TRANSLATION / 80S / stalling / SDD1 | ||||||||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationmaturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process ...maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / pre-mRNA 5'-splice site binding / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / nonfunctional rRNA decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / response to cycloheximide / Ribosomal scanning and start codon recognition / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / preribosome, small subunit precursor / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / negative regulation of translational frameshifting / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of mRNA splicing, via spliceosome / positive regulation of protein kinase activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / preribosome, large subunit precursor / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational elongation / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / 90S preribosome / Ub-specific processing proteases / regulation of translational fidelity / protein-RNA complex assembly / translational termination / ribosomal subunit export from nucleus / maturation of LSU-rRNA / ribosomal small subunit export from nucleus / 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 / DNA-(apurinic or apyrimidinic site) endonuclease activity / rescue of stalled ribosome / protein kinase C binding / cellular response to amino acid starvation / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome assembly / maturation of SSU-rRNA / macroautophagy / small-subunit processome / translational initiation / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / cytoplasmic stress granule / rRNA processing / ribosome biogenesis / 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 / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / G protein-coupled receptor signaling pathway / negative regulation of gene expression / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytoplasm / cytosol Similarity search - Function | ||||||||||||||||||||||||||||||||||||||||||
| Biological species | ![]() | ||||||||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | ||||||||||||||||||||||||||||||||||||||||||
Authors | Tesina, P. / Buschauer, R. / Cheng, J. / Becker, T. / Beckmann, R. | ||||||||||||||||||||||||||||||||||||||||||
| Funding support | Germany, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2020Title: RQT complex dissociates ribosomes collided on endogenous RQC substrate SDD1. Authors: Yoshitaka Matsuo / Petr Tesina / Shizuka Nakajima / Masato Mizuno / Akinori Endo / Robert Buschauer / Jingdong Cheng / Okuto Shounai / Ken Ikeuchi / Yasushi Saeki / Thomas Becker / Roland ...Authors: Yoshitaka Matsuo / Petr Tesina / Shizuka Nakajima / Masato Mizuno / Akinori Endo / Robert Buschauer / Jingdong Cheng / Okuto Shounai / Ken Ikeuchi / Yasushi Saeki / Thomas Becker / Roland Beckmann / Toshifumi Inada / ![]() Abstract: Ribosome-associated quality control (RQC) represents a rescue pathway in eukaryotic cells that is triggered upon translational stalling. Collided ribosomes are recognized for subsequent dissociation ...Ribosome-associated quality control (RQC) represents a rescue pathway in eukaryotic cells that is triggered upon translational stalling. Collided ribosomes are recognized for subsequent dissociation followed by degradation of nascent peptides. However, endogenous RQC-inducing sequences and the mechanism underlying the ubiquitin-dependent ribosome dissociation remain poorly understood. Here, we identified SDD1 messenger RNA from Saccharomyces cerevisiae as an endogenous RQC substrate and reveal the mechanism of its mRNA-dependent and nascent peptide-dependent translational stalling. In vitro translation of SDD1 mRNA enabled the reconstitution of Hel2-dependent polyubiquitination of collided disomes and, preferentially, trisomes. The distinct trisome architecture, visualized using cryo-EM, provides the structural basis for the more-efficient recognition by Hel2 compared with that of disomes. Subsequently, the Slh1 helicase subunit of the RQC trigger (RQT) complex preferentially dissociates the first stalled polyubiquitinated ribosome in an ATP-dependent manner. Together, these findings provide fundamental mechanistic insights into RQC and its physiological role in maintaining cellular protein homeostasis. | ||||||||||||||||||||||||||||||||||||||||||
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Structure visualization
| Movie |
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6snt.cif.gz | 4.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6snt.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6snt.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/sn/6snt ftp://data.pdbj.org/pub/pdb/validation_reports/sn/6snt | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 10262MC ![]() 6sv4C 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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Components
-Saccharomyces cerevisiae S288C ... , 2 types, 2 molecules 21
| #1: RNA chain | Mass: 579761.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #78: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+40S ribosomal protein ... , 31 types, 31 molecules ABPCDEFGHIJKLMNOQRSTUVWXYZabdec
-Protein , 4 types, 4 molecules fgadNC
| #32: Protein | Mass: 17254.227 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #33: Protein | Mass: 34841.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #74: Protein | Mass: 14583.077 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #80: Protein | Mass: 27272.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain , 4 types, 4 molecules 4356
| #35: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #36: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #79: RNA chain | Mass: 6799.149 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #81: RNA chain | Mass: 24469.537 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+60S ribosomal protein ... , 39 types, 39 molecules hijklmnopqrstuvwxyzauABatasaraqapaoanamal...
-Protein/peptide , 1 types, 1 molecules ac
| #75: Protein/peptide | Mass: 3354.243 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Non-polymers , 2 types, 94 molecules 


| #82: Chemical | ChemComp-MG / #83: Chemical | ChemComp-ZN / |
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-Details
| Has ligand of interest | N |
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| Has protein modification | Y |
-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: Yeast 80S ribosome stalled on SDD1 mRNA. / Type: RIBOSOME / Entity ID: #1-#81 / Source: NATURAL |
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| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.5 |
| 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: 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: 2.5 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 214383 / Symmetry type: POINT |
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