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Yorodumi- EMDB-75580: Yeast co-transcriptional pre-60S assembly intermediate Nop12 RNP ... -
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Basic information
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| Title | Yeast co-transcriptional pre-60S assembly intermediate Nop12 RNP - Composite map | |||||||||
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Keywords | ribosome biogenesis / co-transcriptional assembly / RNA-binding protein / nucleolar RNP / RIBOSOME | |||||||||
| Function / homology | Function and homology informationsnoRNA release from pre-rRNA / nuclear division / exonucleolytic trimming to generate mature 5'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage in ITS1 upstream of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / preribosome / PeBoW complex / ATP-dependent activity, acting on RNA / rRNA primary transcript binding / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / cytosolic large ribosomal subunit assembly ...snoRNA release from pre-rRNA / nuclear division / exonucleolytic trimming to generate mature 5'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage in ITS1 upstream of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / preribosome / PeBoW complex / ATP-dependent activity, acting on RNA / rRNA primary transcript binding / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / cytosolic large ribosomal subunit assembly / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / ribosomal large subunit binding / GTP hydrolysis and joining of the 60S ribosomal subunit / proteasome binding / 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) / L13a-mediated translational silencing of Ceruloplasmin expression / ribonucleoprotein complex binding / 90S preribosome / maturation of LSU-rRNA / nuclear periphery / proteasome complex / ribosomal large subunit biogenesis / protein catabolic process / 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) / maturation of SSU-rRNA / small-subunit processome / rRNA processing / nuclear envelope / ribosomal small subunit biogenesis / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / protein-macromolecule adaptor activity / cytoplasmic translation / RNA helicase activity / rRNA binding / structural constituent of ribosome / RNA helicase / mRNA binding / nucleolus / ATP hydrolysis activity / DNA binding / RNA binding / nucleoplasm / ATP binding / identical protein binding / nucleus / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.78 Å | |||||||||
Authors | Piwowarczyk R / Klinge S | |||||||||
| Funding support | United States, 2 items
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Citation | Journal: bioRxiv / Year: 2026Title: Mechanism for the initiation of co-transcriptional pre-60 assembly. Authors: Rafal Piwowarczyk / Sebastian Klinge Abstract: Eukaryotic ribosomal large subunit (60 ) assembly requires an internal transcribed spacer 2 (ITS2) to license both nucleolar and nuclear pre-60 assembly intermediates. The underlying molecular ...Eukaryotic ribosomal large subunit (60 ) assembly requires an internal transcribed spacer 2 (ITS2) to license both nucleolar and nuclear pre-60 assembly intermediates. The underlying molecular mechanisms responsible for nucleation of pre-60 assembly, quality control, and installation of ITS2 during co-transcriptional stages remain unknown. Here we report the earliest co-transcriptional assembly intermediates of the eukaryotic 60 subunits. Together with biochemical assays, our data reveal the architecture of co-transcriptional pre-60 assembly initiation and progression, as well as the molecular logic of an assembly checkpoint. This study highlights an evolutionary solution by which complex RNA folding processes can be parallelized and integrated via biological AND-gating. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_75580.map.gz | 83.6 MB | EMDB map data format | |
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| Header (meta data) | emd-75580-v30.xml emd-75580.xml | 38.5 KB 38.5 KB | Display Display | EMDB header |
| Images | emd_75580.png | 189.9 KB | ||
| Filedesc metadata | emd-75580.cif.gz | 11.2 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-75580 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-75580 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 11aaMC ![]() 10zyC ![]() 10zzC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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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_75580.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.0628 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : Yeast co-transcriptional pre-60S assembly intermediate Nop12 RNP
+Supramolecule #1: Yeast co-transcriptional pre-60S assembly intermediate Nop12 RNP
+Macromolecule #1: 25S ribosomal RNA
+Macromolecule #2: 5.8S ribosomal RNA
+Macromolecule #3: Internal transcribed spacer 2 ITS2
+Macromolecule #4: Nucleolar protein 16
+Macromolecule #5: 60S ribosomal protein L8-A
+Macromolecule #6: Nucleolar protein 12
+Macromolecule #7: Proteasome-interacting protein CIC1
+Macromolecule #8: 60S ribosomal protein L13-A
+Macromolecule #9: 60S ribosomal protein L15-A
+Macromolecule #10: Ribosome biogenesis protein BRX1
+Macromolecule #11: 60S ribosomal protein L36-A
+Macromolecule #12: rRNA-processing protein EBP2
+Macromolecule #13: Pescadillo homolog
+Macromolecule #14: Ribosome biogenesis protein 15
+Macromolecule #15: ATP-dependent RNA helicase HAS1
+Macromolecule #16: Ribosome biogenesis protein ERB1
+Macromolecule #17: Ribosome biogenesis protein RLP7
+Macromolecule #18: MAGNESIUM ION
-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: 7.5 |
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| Grid | Model: Quantifoil R3.5/1 / Material: GOLD / Mesh: 400 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR |
| Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Software | Name: SerialEM |
| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 51.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.7 µm / Nominal defocus min: 0.7000000000000001 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Authors
United States, 2 items
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Processing
FIELD EMISSION GUN

