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Yorodumi- PDB-6zuo: Human RIO1(kd)-StHA late pre-40S particle, structural state A (pr... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 6zuo | ||||||
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| Title | Human RIO1(kd)-StHA late pre-40S particle, structural state A (pre 18S rRNA cleavage) | ||||||
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Keywords | RIBOSOME / Human ribosome biogenesis / small ribosomal subunit / rRNA processing | ||||||
| Function / homology | Function and homology informationnegative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of ubiquitin-protein transferase activity / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex ...negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of ubiquitin-protein transferase activity / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / positive regulation of DNA-templated transcription initiation / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / negative regulation of RNA splicing / neural crest cell differentiation / supercoiled DNA binding / NF-kappaB complex / negative regulation of DNA repair / cytoplasmic translational initiation / preribosome, small subunit precursor / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / rRNA modification in the nucleus and cytosol / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / negative regulation of phagocytosis / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / Formation of the ternary complex, and subsequently, the 43S complex / ion channel inhibitor activity / laminin receptor activity / protein kinase A binding / Ribosomal scanning and start codon recognition / pigmentation / positive regulation of mitochondrial depolarization / Translation initiation complex formation / negative regulation of Wnt signaling pathway / fibroblast growth factor binding / Protein hydroxylation / monocyte chemotaxis / BH3 domain binding / negative regulation of translational frameshifting / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / positive regulation of GTPase activity / SARS-CoV-1 modulates host translation machinery / TOR signaling / mTORC1-mediated signalling / iron-sulfur cluster binding / regulation of cell division / Peptide chain elongation / cellular response to ethanol / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / negative regulation of protein binding / protein serine/threonine kinase inhibitor activity / Eukaryotic Translation Termination / SRP-dependent cotranslational protein targeting to membrane / ubiquitin ligase inhibitor activity / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of respiratory burst involved in inflammatory response / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of signal transduction by p53 class mediator / negative regulation of ubiquitin-dependent protein catabolic process / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / positive regulation of microtubule polymerization / phagocytic cup / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / positive regulation of intrinsic apoptotic signaling pathway / spindle assembly / Protein methylation / translation regulator activity / 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) / Nuclear events stimulated by ALK signaling in cancer / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / positive regulation of cell cycle / laminin binding / RNA endonuclease activity / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / gastrulation / DNA-(apurinic or apyrimidinic site) endonuclease activity / Maturation of protein E / Maturation of protein E / visual perception / ER Quality Control Compartment (ERQC) / signaling adaptor activity / MDM2/MDM4 family protein binding / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / negative regulation of protein ubiquitination Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
Authors | Plassart, L. / Shayan, R. / Plisson-Chastang, C. | ||||||
| Funding support | France, 1items
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Citation | Journal: Elife / Year: 2021Title: The final step of 40S ribosomal subunit maturation is controlled by a dual key lock. Authors: Laura Plassart / Ramtin Shayan / Christian Montellese / Dana Rinaldi / Natacha Larburu / Carole Pichereaux / Carine Froment / Simon Lebaron / Marie-Françoise O'Donohue / Ulrike Kutay / ...Authors: Laura Plassart / Ramtin Shayan / Christian Montellese / Dana Rinaldi / Natacha Larburu / Carole Pichereaux / Carine Froment / Simon Lebaron / Marie-Françoise O'Donohue / Ulrike Kutay / Julien Marcoux / Pierre-Emmanuel Gleizes / Celia Plisson-Chastang / ![]() Abstract: Preventing premature interaction of pre-ribosomes with the translation apparatus is essential for translational accuracy. Hence, the final maturation step releasing functional 40S ribosomal subunits, ...Preventing premature interaction of pre-ribosomes with the translation apparatus is essential for translational accuracy. Hence, the final maturation step releasing functional 40S ribosomal subunits, namely processing of the 18S ribosomal RNA 3' end, is safeguarded by the protein DIM2, which both interacts with the endoribonuclease NOB1 and masks the rRNA cleavage site. To elucidate the control mechanism that unlocks NOB1 activity, we performed cryo-electron microscopy analysis of late human pre-40S particles purified using a catalytically inactive form of the ATPase RIO1. These structures, together with in vivo and in vitro functional analyses, support a model in which ATP-loaded RIO1 cooperates with ribosomal protein RPS26/eS26 to displace DIM2 from the 18S rRNA 3' end, thereby triggering final cleavage by NOB1; release of ADP then leads to RIO1 dissociation from the 40S subunit. This dual key lock mechanism requiring RIO1 and RPS26 guarantees the precise timing of pre-40S particle conversion into translation-competent ribosomal subunits. | ||||||
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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 | 6zuo.cif.gz | 1.7 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6zuo.ent.gz | 1.3 MB | Display | PDB format |
| PDBx/mmJSON format | 6zuo.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zu/6zuo ftp://data.pdbj.org/pub/pdb/validation_reports/zu/6zuo | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 11440MC ![]() 6zv6C 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
+40S ribosomal protein ... , 30 types, 30 molecules ABCDEFGHIJKLMNOPQRSTUVWXYZbcde
-Protein , 2 types, 2 molecules fg
| #32: Protein | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979 |
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| #33: Protein | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
-RNA-binding protein ... , 2 types, 2 molecules xy
| #34: Protein | Mass: 27970.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NRX1 |
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| #35: Protein | Mass: 46743.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: Q9ULX3, Hydrolases; Acting on ester bonds |
-RNA chain / Non-polymers , 2 types, 4 molecules 2

| #1: RNA chain | Mass: 603107.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HEK293 |
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| #36: Chemical |
-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: human cytoplasmic late precursor to the small ribosomal subunit, purified using RIO1(kd)-StHA as bait. Structural state A (pre 18S rRNA maturation) Type: RIBOSOME / Entity ID: #1-#35 / Source: NATURAL |
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| Molecular weight | Value: 1.4 MDa / Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) / Strain: HEK 293 |
| Buffer solution | pH: 7.6 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1 |
| Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 291 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 |
| Specimen holder | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Electron dose: 29.4 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9494 |
| Image scans | Movie frames/image: 28 |
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Processing
| Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||
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| EM software |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 2126610 | ||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 104844 / Algorithm: EXACT BACK PROJECTION / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 6G51 Accession code: 6G51 / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi



Homo sapiens (human)
France, 1items
Citation
UCSF Chimera


















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