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Open data
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Basic information
| Entry | Database: PDB / ID: 7zpq | ||||||||||||
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| Title | Structure of the RQT-bound 80S ribosome from S. cerevisiae (C1) | ||||||||||||
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Keywords | RIBOSOME / collision / RNA binding / RQT / RQC | ||||||||||||
| Function / homology | Function and homology information: / primary metabolic process / ribosomal subunit / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / ribosome disassembly / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / pre-mRNA 5'-splice site binding ...: / primary metabolic process / ribosomal subunit / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / ribosome disassembly / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / pre-mRNA 5'-splice site binding / GDP-dissociation inhibitor activity / K63-linked polyubiquitin modification-dependent protein binding / 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) / Major pathway of rRNA processing in the nucleolus and cytosol / mRNA destabilization / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of mRNA splicing, via spliceosome / preribosome, large subunit precursor / Formation of a pool of free 40S subunits / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / positive regulation of protein kinase activity / negative regulation of translational frameshifting / 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) / G-protein alpha-subunit binding / ribosomal large subunit export from nucleus / 90S preribosome / regulation of translational fidelity / ribosomal subunit export from nucleus / protein-RNA complex assembly / maturation of 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 / cytosolic ribosome / cellular response to amino acid starvation / protein kinase C binding / ubiquitin binding / 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) / macroautophagy / maturation of SSU-rRNA / translational initiation / small-subunit processome / helicase activity / 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 / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / gene expression / cytosolic large ribosomal subunit / nucleic acid binding / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / hydrolase activity / ribosome / translation / G protein-coupled receptor signaling pathway / ribonucleoprotein complex / negative regulation of gene expression / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / regulation of DNA-templated transcription / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | ![]() | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å | ||||||||||||
Authors | Best, K.M. / Ikeuchi, K. / Kater, L. / Best, D.M. / Musial, J. / Matsuo, Y. / Berninghausen, O. / Becker, T. / Inada, T. / Beckmann, R. | ||||||||||||
| Funding support | European Union, Germany, 3items
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Citation | Journal: Nat Commun / Year: 2023Title: Structural basis for clearing of ribosome collisions by the RQT complex. Authors: Katharina Best / Ken Ikeuchi / Lukas Kater / Daniel Best / Joanna Musial / Yoshitaka Matsuo / Otto Berninghausen / Thomas Becker / Toshifumi Inada / Roland Beckmann / ![]() Abstract: Translation of aberrant messenger RNAs can cause stalling of ribosomes resulting in ribosomal collisions. Collided ribosomes are specifically recognized to initiate stress responses and quality ...Translation of aberrant messenger RNAs can cause stalling of ribosomes resulting in ribosomal collisions. Collided ribosomes are specifically recognized to initiate stress responses and quality control pathways. Ribosome-associated quality control facilitates the degradation of incomplete translation products and requires dissociation of the stalled ribosomes. A central event is therefore the splitting of collided ribosomes by the ribosome quality control trigger complex, RQT, by an unknown mechanism. Here we show that RQT requires accessible mRNA and the presence of a neighboring ribosome. Cryogenic electron microscopy of RQT-ribosome complexes reveals that RQT engages the 40S subunit of the lead ribosome and can switch between two conformations. We propose that the Ski2-like helicase 1 (Slh1) subunit of RQT applies a pulling force on the mRNA, causing destabilizing conformational changes of the small ribosomal subunit, ultimately resulting in subunit dissociation. Our findings provide conceptual framework for a helicase-driven ribosomal splitting mechanism. #1: Journal: Acta Crystallogr D Struct Biol / Year: 2018Title: Real-space refinement in PHENIX for cryo-EM and crystallography. Authors: Afonine, P.V. / Poon, B.K. / Read, R.J. / Sobolev, O.V. / Terwilliger, T.C. / Urzhumtsev, A. / Adams, P.D. | ||||||||||||
| History |
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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 | 7zpq.cif.gz | 4.8 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb7zpq.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 7zpq.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zp/7zpq ftp://data.pdbj.org/pub/pdb/validation_reports/zp/7zpq | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 14861MC ![]() 7zrsC ![]() 7zs5C ![]() 7zuwC ![]() 7zuxC 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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| 1 |
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Components
-RNA chain , 5 types, 5 molecules 23456
| #1: RNA chain | Mass: 579126.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #2: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #3: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #4: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #5: RNA chain | Mass: 24445.512 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+40S ribosomal protein ... , 22 types, 22 molecules AAABAEAGAHAIAJAKALAMANAOAQARASATAVAXAYAZAbAe
+Protein , 21 types, 21 molecules ACADAFAPAUAWAaAcAdAfAgBCBDBIBJBVBdBjCACBCC
+60S ribosomal protein ... , 33 types, 33 molecules BABBBEBFBGBHBKBLBMBNBOBPBQBRBSBTBUBWBXBYBZBaBbBcBeBfBgBhBiBk...
-Protein/peptide , 1 types, 1 molecules Bm
| #77: 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, 95 molecules 


| #83: Chemical | ChemComp-MG / #84: Chemical | ChemComp-ZN / |
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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
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| Source (natural) |
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| Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||
| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
| Specimen support | Grid material: COPPER / Grid type: Quantifoil R3/3 | ||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK II / 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: SPOT SCAN |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 43.6 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 194186 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 22.14 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi






Germany, 3items
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FIELD EMISSION GUN