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Open data
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Basic information
| Entry | Database: PDB / ID: 9.0E+71 | ||||||
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| Title | Cryo-EM structure of the Pyrobaculum calidifontis 70S ribosome | ||||||
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Keywords | RIBOSOME / Translation / Hibernation / RNA | ||||||
| Function / homology | Function and homology informationribonuclease P activity / tRNA 5'-leader removal / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome biogenesis / large ribosomal subunit / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit ...ribonuclease P activity / tRNA 5'-leader removal / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome biogenesis / large ribosomal subunit / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / mRNA binding / RNA binding / zinc ion binding / cytoplasm / cytosol Similarity search - Function | ||||||
| Biological species | ![]() Pyrobaculum calidifontis JCM 11548 (archaea) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.36 Å | ||||||
Authors | Nissley, A.J. / Cate, J.H.D. | ||||||
| Funding support | United States, 1items
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Citation | Journal: Nat Microbiol / Year: 2025Title: Structure of an archaeal ribosome reveals a divergent active site and hibernation factor. Authors: Amos J Nissley / Yekaterina Shulgina / Roan W Kivimae / Blake E Downing / Petar I Penev / Jillian F Banfield / Dipti D Nayak / Jamie H D Cate / ![]() Abstract: Ribosomes translate mRNA into protein. Despite divergence in ribosome structure over the course of evolution, the catalytic site, known as the peptidyl transferase centre (PTC), is thought to be ...Ribosomes translate mRNA into protein. Despite divergence in ribosome structure over the course of evolution, the catalytic site, known as the peptidyl transferase centre (PTC), is thought to be nearly universally conserved. Here we identify clades of archaea that have highly divergent ribosomal RNA sequences in the PTC. To understand how these PTC sequences fold, we determined cryo-EM structures of the 70S and 50S ribosomes to 2.4 Å and 2 Å, respectively, from the hyperthermophilic archaeon Pyrobaculum calidifontis. PTC sequence variation leads to the rearrangement of key base triples, and differences between archaeal and bacterial ribosomal proteins enable sequence variation in archaeal PTCs. Finally, we identify an archaeal ribosome hibernation factor, Dri, that differs from known bacterial and eukaryotic hibernation factors and is found in multiple archaeal phyla. Overall, this work identifies factors that regulate ribosome function in archaea and reveals a larger diversity of the most ancient sequences in the ribosome. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9e71.cif.gz | 4.3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9e71.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9e71.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9e71_validation.pdf.gz | 1.7 MB | Display | wwPDB validaton report |
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| Full document | 9e71_full_validation.pdf.gz | 2.1 MB | Display | |
| Data in XML | 9e71_validation.xml.gz | 330.6 KB | Display | |
| Data in CIF | 9e71_validation.cif.gz | 571.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/e7/9e71 ftp://data.pdbj.org/pub/pdb/validation_reports/e7/9e71 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 47628MC ![]() 9e6qC ![]() 9e7fC C: citing same article ( M: map data used to model this data |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-RNA chain , 3 types, 3 molecules 214
| #1: RNA chain | Mass: 41803.953 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: GenBank: 126248349 |
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| #2: RNA chain | Mass: 984007.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea) |
| #3: RNA chain | Mass: 487519.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: GenBank: 343200235 |
+Large ribosomal subunit protein ... , 31 types, 32 molecules AAABACADAEAFAGAHAIAJAKALANAOAPAQARASATAUAVAWAXAYAZAaAbAcAdAfAgAi
-Protein , 8 types, 8 molecules AMAeAhAjAkBZBbBc
| #15: Protein | Mass: 22623.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MWR6 |
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| #33: Protein | Mass: 7954.435 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MTT1 |
| #36: Protein | Mass: 10603.610 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea) |
| #38: Protein | Mass: 20956.449 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MTM7 |
| #39: Protein | Mass: 10938.797 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MWU0 |
| #65: Protein | Mass: 8575.992 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea) |
| #67: Protein | Mass: 7856.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea) |
| #68: Protein | Mass: 6956.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MY11 |
+Small ribosomal subunit protein ... , 23 types, 23 molecules BABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBY
-SSU ribosomal protein ... , 3 types, 3 molecules BWBXBa
| #62: Protein | Mass: 12477.728 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MV37 |
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| #63: Protein | Mass: 11571.864 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MV49 |
| #66: Protein | Mass: 6113.139 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Pyrobaculum calidifontis JCM 11548 (archaea)References: UniProt: A3MSW3 |
-Non-polymers , 4 types, 8139 molecules 






| #69: Chemical | ChemComp-SPM / #70: Chemical | ChemComp-MG / #71: Chemical | ChemComp-ZN / #72: Water | ChemComp-HOH / | |
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-Details
| Has ligand of interest | N |
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| Has protein modification | Y |
-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
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| Buffer solution | pH: 7 | ||||||||||||||||||||||||||||||
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| Specimen | Conc.: 0.12 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
| Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R1.2/1.3 | ||||||||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 1500 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7318 |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 2360632 | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.36 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 129829 / Details: Global resolution / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: AB INITIO MODEL |
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Pyrobaculum calidifontis JCM 11548 (archaea)
United States, 1items
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FIELD EMISSION GUN