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Yorodumi- EMDB-16533: Cryo-EM structure of native Otu2-bound ubiquitinated 48S initiati... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-16533 | ||||||||||||||||||
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Title | Cryo-EM structure of native Otu2-bound ubiquitinated 48S initiation complex (partial) | ||||||||||||||||||
Map data | Cryo-EM map of Otu2-bound ubiquitinated 48S initiation complex | ||||||||||||||||||
Sample |
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Function / homology | Function and homology information eukaryotic translation initiation factor 3 complex, eIF3e / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / incipient cellular bud site / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / protein-synthesizing GTPase / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / formation of cytoplasmic translation initiation complex ...eukaryotic translation initiation factor 3 complex, eIF3e / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / incipient cellular bud site / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / protein-synthesizing GTPase / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / formation of cytoplasmic translation initiation complex / eukaryotic 48S preinitiation complex / negative regulation of glucose mediated signaling pathway / negative regulation of translational frameshifting / protein metabolic process / Protein methylation / RMTs methylate histone arginines / positive regulation of translational fidelity / mTORC1-mediated signalling / ribosome-associated ubiquitin-dependent protein catabolic process / Protein hydroxylation / GDP-dissociation inhibitor activity / : / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / preribosome, small subunit precursor / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / 90S preribosome / GTP hydrolysis and joining of the 60S ribosomal subunit / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / ribosomal small subunit export from nucleus / L13a-mediated translational silencing of Ceruloplasmin expression / translation regulator activity / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / 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) / regulation of translational fidelity / positive regulation of protein kinase activity / rescue of stalled ribosome / translation initiation factor binding / maturation of SSU-rRNA / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational initiation / DNA-(apurinic or apyrimidinic site) endonuclease activity / cellular response to amino acid starvation / ribosome assembly / translation initiation factor activity / small-subunit processome / protein kinase C binding / maintenance of translational fidelity / modification-dependent protein catabolic process / ribosomal small subunit biogenesis / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / protein tag activity / ribosomal small subunit assembly / rRNA processing / cytoplasmic stress granule / cytosolic small ribosomal subunit / ribosome binding / ribosome biogenesis / small ribosomal subunit / cytoplasmic translation / cytosolic large ribosomal subunit / cysteine-type deubiquitinase activity / tRNA binding / negative regulation of translation / rRNA binding / protein ubiquitination / ribosome / structural constituent of ribosome / positive regulation of protein phosphorylation / translation / G protein-coupled receptor signaling pathway / negative regulation of gene expression / mRNA binding / GTPase activity / ubiquitin protein ligase binding / GTP binding / nucleolus / ATP hydrolysis activity / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) / Saccharomyces cerevisiae W303 (yeast) | ||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||||||||
Authors | Ikeuchi K / Buschauer R / Cheng J / Berninghausen O / Becker T / Beckmann R | ||||||||||||||||||
Funding support | Germany, Japan, 5 items
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Citation | Journal: Nat Commun / Year: 2023 Title: Molecular basis for recognition and deubiquitination of 40S ribosomes by Otu2. Authors: Ken Ikeuchi / Nives Ivic / Robert Buschauer / Jingdong Cheng / Thomas Fröhlich / Yoshitaka Matsuo / Otto Berninghausen / Toshifumi Inada / Thomas Becker / Roland Beckmann / Abstract: In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its ...In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its importance for translation efficiency the exact role and structural basis for this translational reset is poorly understood. Here, structural analysis by cryo-electron microscopy of native and reconstituted Otu2-bound ribosomal complexes reveals that Otu2 engages 40S subunits mainly between ribosome recycling and initiation stages. Otu2 binds to several sites on the intersubunit surface of the 40S that are not occupied by any other 40S-binding factors. This binding mode explains the discrimination against 80S ribosomes via the largely helical N-terminal domain of Otu2 as well as the specificity for mono-ubiquitinated eS7 on 40S. Collectively, this study reveals mechanistic insights into the Otu2-driven deubiquitination steps for translational reset during ribosome recycling/(re)initiation. | ||||||||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_16533.map.gz | 19.2 MB | EMDB map data format | |
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Header (meta data) | emd-16533-v30.xml emd-16533.xml | 68.3 KB 68.3 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_16533_fsc.xml | 13.9 KB | Display | FSC data file |
Images | emd_16533.png | 160.8 KB | ||
Others | emd_16533_half_map_1.map.gz emd_16533_half_map_2.map.gz | 261.9 MB 261.9 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-16533 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16533 | HTTPS FTP |
-Related structure data
Related structure data | 8casMC 8c83C 8cahC 8cbjC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_16533.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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Annotation | Cryo-EM map of Otu2-bound ubiquitinated 48S initiation complex | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.045 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Half-map A
File | emd_16533_half_map_1.map | ||||||||||||
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Annotation | Half-map A | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half-map B
File | emd_16533_half_map_2.map | ||||||||||||
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Annotation | Half-map B | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : Yeast native 48S initiation complex (partial) with deubiquitinati...
+Supramolecule #1: Yeast native 48S initiation complex (partial) with deubiquitinati...
+Macromolecule #1: 40S ribosomal protein S0-A
+Macromolecule #2: 40S ribosomal protein S1-A
+Macromolecule #3: 40S ribosomal protein S2
+Macromolecule #4: 40S ribosomal protein S4-B
+Macromolecule #5: 40S ribosomal protein S6-B
+Macromolecule #6: 40S ribosomal protein S8-A
+Macromolecule #7: 40S ribosomal protein S9-A
+Macromolecule #8: 40S ribosomal protein S11-A
+Macromolecule #9: 40S ribosomal protein S13
+Macromolecule #10: 40S ribosomal protein S14-A
+Macromolecule #11: 40S ribosomal protein S21-A
+Macromolecule #12: 40S ribosomal protein S22-A
+Macromolecule #13: 40S ribosomal protein S23-A
+Macromolecule #14: 40S ribosomal protein S24-A
+Macromolecule #15: 40S ribosomal protein S26-A
+Macromolecule #16: 40S ribosomal protein S27-A
+Macromolecule #17: 40S ribosomal protein S30-A
+Macromolecule #18: RPS15 isoform 1
+Macromolecule #19: 40S ribosomal protein S3
+Macromolecule #20: 40S ribosomal protein S10-A
+Macromolecule #21: 40S ribosomal protein S12
+Macromolecule #22: 40S ribosomal protein S16-A
+Macromolecule #23: 40S ribosomal protein S17-A
+Macromolecule #24: 40S ribosomal protein S18-A
+Macromolecule #25: 40S ribosomal protein S19-A
+Macromolecule #26: 40S ribosomal protein S20
+Macromolecule #27: 40S ribosomal protein S25-A
+Macromolecule #28: RPS29A isoform 1
+Macromolecule #29: 40S ribosomal protein S31
+Macromolecule #30: Guanine nucleotide-binding protein subunit beta-like protein
+Macromolecule #31: 40S ribosomal protein S28-A
+Macromolecule #32: Eukaryotic translation initiation factor 3 subunit I
+Macromolecule #33: Eukaryotic translation initiation factor 3 subunit G
+Macromolecule #35: TIF5 isoform 1
+Macromolecule #36: Eukaryotic translation initiation factor 3 subunit A
+Macromolecule #37: Eukaryotic translation initiation factor 3 subunit B
+Macromolecule #38: Eukaryotic translation initiation factor 3 subunit C
+Macromolecule #40: Eukaryotic translation initiation factor 4C
+Macromolecule #41: RLI1 isoform 1
+Macromolecule #43: 40S ribosomal protein S5
+Macromolecule #44: 60S ribosomal protein L40-A
+Macromolecule #45: 60S ribosomal protein L41-A
+Macromolecule #46: SUI2 isoform 1
+Macromolecule #47: protein-synthesizing GTPase
+Macromolecule #48: SUI3 isoform 1
+Macromolecule #49: OTU domain-containing protein 2
+Macromolecule #50: 40S ribosomal protein S7-A
+Macromolecule #34: tRNA
+Macromolecule #39: mRNA
+Macromolecule #42: 18S ribosomal RNA
+Macromolecule #51: ZINC ION
+Macromolecule #52: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #53: MAGNESIUM ION
+Macromolecule #54: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #55: IRON/SULFUR CLUSTER
+Macromolecule #56: METHIONINE
+Macromolecule #57: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 46.4 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |