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Open data
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Basic information
| Entry | Database: PDB / ID: 6cb1 | ||||||||||||||||||
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| Title | Yeast nucleolar pre-60S ribosomal subunit (state 3) | ||||||||||||||||||
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Keywords | RIBOSOME / Pre-60S / ribosome biogenesis / LSU processome | ||||||||||||||||||
| Function / homology | Function and homology informationsnoRNA release from pre-rRNA / 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) / 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) / pre-mRNA 5'-splice site binding / maturation of 5.8S rRNA / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) ...snoRNA release from pre-rRNA / 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) / 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) / pre-mRNA 5'-splice site binding / maturation of 5.8S rRNA / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / preribosome, small subunit precursor / proteasome binding / Major pathway of rRNA processing in the nucleolus and cytosol / ribosomal large subunit binding / 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 / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / ribosomal large subunit export from nucleus / 90S preribosome / ribonucleoprotein complex binding / protein-RNA complex assembly / maturation of LSU-rRNA / proteasome complex / ribosomal large subunit biogenesis / 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 / macroautophagy / small-subunit processome / protein catabolic process / rRNA processing / nuclear envelope / ribosome biogenesis / ribosomal small subunit biogenesis / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / protein-macromolecule adaptor activity / cytosolic large ribosomal subunit / cytoplasmic translation / RNA helicase activity / negative regulation of translation / rRNA binding / structural constituent of ribosome / RNA helicase / ribosome / mRNA binding / nucleolus / ATP hydrolysis activity / DNA binding / RNA binding / zinc ion binding / nucleoplasm / ATP binding / identical protein binding / nucleus / cytoplasm / cytosol Similarity search - Function | ||||||||||||||||||
| Biological species | ![]() | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||||||||||||||
Authors | Sanghai, Z.A. / Miller, L. / Barandun, J. / Hunziker, M. / Chaker-Margot, M. / Klinge, S. | ||||||||||||||||||
| Funding support | United States, Switzerland, 5items
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Citation | Journal: Nature / Year: 2018Title: Modular assembly of the nucleolar pre-60S ribosomal subunit. Authors: Zahra Assur Sanghai / Linamarie Miller / Kelly R Molloy / Jonas Barandun / Mirjam Hunziker / Malik Chaker-Margot / Junjie Wang / Brian T Chait / Sebastian Klinge / ![]() Abstract: Early co-transcriptional events during eukaryotic ribosome assembly result in the formation of precursors of the small (40S) and large (60S) ribosomal subunits. A multitude of transient assembly ...Early co-transcriptional events during eukaryotic ribosome assembly result in the formation of precursors of the small (40S) and large (60S) ribosomal subunits. A multitude of transient assembly factors regulate and chaperone the systematic folding of pre-ribosomal RNA subdomains. However, owing to a lack of structural information, the role of these factors during early nucleolar 60S assembly is not fully understood. Here we report cryo-electron microscopy (cryo-EM) reconstructions of the nucleolar pre-60S ribosomal subunit in different conformational states at resolutions of up to 3.4 Å. These reconstructions reveal how steric hindrance and molecular mimicry are used to prevent both premature folding states and binding of later factors. This is accomplished by the concerted activity of 21 ribosome assembly factors that stabilize and remodel pre-ribosomal RNA and ribosomal proteins. Among these factors, three Brix-domain proteins and their binding partners form a ring-like structure at ribosomal RNA (rRNA) domain boundaries to support the architecture of the maturing particle. The existence of mutually exclusive conformations of these pre-60S particles suggests that the formation of the polypeptide exit tunnel is achieved through different folding pathways during subsequent stages of ribosome assembly. These structures rationalize previous genetic and biochemical data and highlight the mechanisms that drive eukaryotic ribosome assembly in a unidirectional manner. | ||||||||||||||||||
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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 | 6cb1.cif.gz | 1.8 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6cb1.ent.gz | 1.3 MB | Display | PDB format |
| PDBx/mmJSON format | 6cb1.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6cb1_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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| Full document | 6cb1_full_validation.pdf.gz | 1.4 MB | Display | |
| Data in XML | 6cb1_validation.xml.gz | 163.7 KB | Display | |
| Data in CIF | 6cb1_validation.cif.gz | 295.9 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/cb/6cb1 ftp://data.pdbj.org/pub/pdb/validation_reports/cb/6cb1 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7445MC ![]() 7324C ![]() 6c0fC C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-RNA chain , 3 types, 3 molecules 126
| #1: RNA chain | Mass: 1097477.875 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: 74308.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Ribosome biogenesis protein ... , 6 types, 6 molecules Abdost
| #4: Protein | Mass: 51982.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #23: Protein | Mass: 33079.852 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #25: Protein | Mass: 39591.789 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #35: Protein | Mass: 25499.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #37: Protein | Mass: 62860.680 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #38: Protein | Mass: 35210.582 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+60S ribosomal protein ... , 22 types, 22 molecules CEFGLMNOPQSXYZcefghijk
-Protein , 8 types, 8 molecules DIK7mnpz
| #6: Protein | Mass: 35754.605 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #10: Protein | Mass: 35184.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #11: Protein | Mass: 42596.691 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #22: Protein | Mass: 26954.447 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #33: Protein | Mass: 8698.714 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #34: Protein | Mass: 69984.148 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #36: Protein | Mass: 56798.348 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: A0A250WER3, UniProt: Q03532*PLUS, RNA helicase |
| #40: Protein | Mass: 33250.531 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein/peptide / Non-polymers , 2 types, 3 molecules x

| #39: Protein/peptide | Mass: 2400.951 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #41: Chemical |
-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: Yeast nucleolar pre-60S ribosomal subunit / Type: COMPLEX / Entity ID: #1-#40 / Source: NATURAL |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: ![]() |
| 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: 400 divisions/in. |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 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 / Nominal defocus max: 3500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Electron dose: 1.56 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
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| CTF correction | Type: NONE | ||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 31419 / Symmetry type: POINT | ||||||||||||||||||||||||
| Atomic model building | Protocol: OTHER / Space: REAL |
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About Yorodumi






United States,
Switzerland, 5items
Citation
UCSF Chimera






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