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Yorodumi- EMDB-11441: Human RIO1(kd)-StHA late pre-40S particle, structural state B (po... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-11441 | |||||||||
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| Title | Human RIO1(kd)-StHA late pre-40S particle, structural state B (post 18S rRNA cleavage) | |||||||||
Map data | Human pre-40S particles purified using RIO1(kd)-StHA as bait - State B | |||||||||
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Keywords | Human ribosome biogenesis / small ribosomal subunit / rRNA processing / RIBOSOME | |||||||||
| Function / homology | Function and homology informationmethyltransferase complex / positive regulation of rRNA processing / 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 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 ...methyltransferase complex / positive regulation of rRNA processing / 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 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 / positive regulation of endodeoxyribonuclease activity / nucleolus organization / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of RNA splicing / negative regulation of DNA repair / supercoiled DNA binding / NF-kappaB complex / cysteine-type endopeptidase activator activity involved in apoptotic process / neural crest cell differentiation / oxidized purine DNA binding / positive regulation of ubiquitin-protein transferase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / preribosome, small subunit precursor / ubiquitin-like protein conjugating enzyme binding / rRNA modification in the nucleus and cytosol / erythrocyte homeostasis / negative regulation of phagocytosis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / negative regulation of ubiquitin protein ligase activity / protein kinase A binding / laminin receptor activity / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / positive regulation of mitochondrial depolarization / fibroblast growth factor binding / positive regulation of T cell receptor signaling pathway / negative regulation of Wnt signaling pathway / monocyte chemotaxis / negative regulation of translational frameshifting / TOR signaling / BH3 domain binding / Protein hydroxylation / positive regulation of activated T cell proliferation / SARS-CoV-1 modulates host translation machinery / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / iron-sulfur cluster binding / mTORC1-mediated signalling / regulation of cell division / Peptide chain elongation / cellular response to ethanol / positive regulation of GTPase activity / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / protein serine/threonine kinase inhibitor activity / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of ubiquitin-dependent protein catabolic process / ubiquitin ligase inhibitor activity / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / negative regulation of protein binding / positive regulation of signal transduction by p53 class mediator / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / 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 / phagocytic cup / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / positive regulation of intrinsic apoptotic signaling pathway / Protein methylation / spindle assembly / positive regulation of microtubule polymerization / Nuclear events stimulated by ALK signaling in cancer / 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) / positive regulation of cell cycle / laminin binding / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / translation regulator activity / translation initiation factor binding / Maturation of protein E / gastrulation / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Maturation of protein E / DNA-(apurinic or apyrimidinic site) endonuclease activity / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / MDM2/MDM4 family protein binding Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
Authors | Plassart L / Shayan R | |||||||||
| Funding support | France, 1 items
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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
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_11441.map.gz | 23.1 MB | EMDB map data format | |
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| Header (meta data) | emd-11441-v30.xml emd-11441.xml | 55.1 KB 55.1 KB | Display Display | EMDB header |
| Images | emd_11441.png | 48.1 KB | ||
| Filedesc metadata | emd-11441.cif.gz | 12.8 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11441 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11441 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6zv6MC ![]() 6zuoC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_11441.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Human pre-40S particles purified using RIO1(kd)-StHA as bait - State B | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : human cytoplasmic late precursor to the small ribosomal subunit, ...
+Supramolecule #1: human cytoplasmic late precursor to the small ribosomal subunit, ...
+Macromolecule #1: 18S ribosomal RNA
+Macromolecule #2: 40S ribosomal protein SA
+Macromolecule #3: 40S ribosomal protein S3a
+Macromolecule #4: 40S ribosomal protein S2
+Macromolecule #5: 40S ribosomal protein S3
+Macromolecule #6: 40S ribosomal protein S4, X isoform
+Macromolecule #7: 40S ribosomal protein S5
+Macromolecule #8: 40S ribosomal protein S6
+Macromolecule #9: 40S ribosomal protein S7
+Macromolecule #10: 40S ribosomal protein S8
+Macromolecule #11: 40S ribosomal protein S9
+Macromolecule #12: 40S ribosomal protein S10
+Macromolecule #13: 40S ribosomal protein S11
+Macromolecule #14: 40S ribosomal protein S12
+Macromolecule #15: 40S ribosomal protein S13
+Macromolecule #16: 40S ribosomal protein S14
+Macromolecule #17: 40S ribosomal protein S15
+Macromolecule #18: 40S ribosomal protein S16
+Macromolecule #19: 40S ribosomal protein S17
+Macromolecule #20: 40S ribosomal protein S18
+Macromolecule #21: 40S ribosomal protein S26
+Macromolecule #22: 40S ribosomal protein S20
+Macromolecule #23: 40S ribosomal protein S21
+Macromolecule #24: 40S ribosomal protein S15a
+Macromolecule #25: 40S ribosomal protein S23
+Macromolecule #26: 40S ribosomal protein S24
+Macromolecule #27: 40S ribosomal protein S25
+Macromolecule #28: 40S ribosomal protein S27
+Macromolecule #29: 40S ribosomal protein S28
+Macromolecule #30: 40S ribosomal protein S29
+Macromolecule #31: 40S ribosomal protein S30
+Macromolecule #32: Ubiquitin-40S ribosomal protein S27a
+Macromolecule #33: Receptor of activated protein C kinase 1
+Macromolecule #34: 40S ribosomal protein S19
+Macromolecule #35: Serine/threonine-protein kinase RIO1
+Macromolecule #36: MAGNESIUM ION
+Macromolecule #37: ZINC ION
+Macromolecule #38: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #39: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.6 |
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| Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 291 K / Instrument: LEICA EM GP |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 9494 / Average electron dose: 29.4 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi


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
















































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