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Yorodumi- PDB-8hkv: Cryo-EM Structures and Translocation Mechanism of Crenarchaeota R... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 8hkv | ||||||
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| Title | Cryo-EM Structures and Translocation Mechanism of Crenarchaeota Ribosome | ||||||
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Keywords | RIBOSOME / Sulfolobus acidocaldarius ribosome small subunit | ||||||
| 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 / ribosome biogenesis / large ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large 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 / ribosome biogenesis / large ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / 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 Similarity search - Function | ||||||
| Biological species | ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.94 Å | ||||||
Authors | Wang, Y.H. / Zhou, J. | ||||||
| Funding support | China, 1items
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Citation | Journal: Nucleic Acids Res / Year: 2023Title: Cryo-electron microscopy structure and translocation mechanism of the crenarchaeal ribosome. Authors: Ying-Hui Wang / Hong Dai / Ling Zhang / Yun Wu / Jingfen Wang / Chen Wang / Cai-Huang Xu / Hai Hou / Bing Yang / Yongqun Zhu / Xing Zhang / Jie Zhou / ![]() Abstract: Archaeal ribosomes have many domain-specific features; however, our understanding of these structures is limited. We present 10 cryo-electron microscopy (cryo-EM) structures of the archaeal ribosome ...Archaeal ribosomes have many domain-specific features; however, our understanding of these structures is limited. We present 10 cryo-electron microscopy (cryo-EM) structures of the archaeal ribosome from crenarchaeota Sulfolobus acidocaldarius (Sac) at 2.7-5.7 Å resolution. We observed unstable conformations of H68 and h44 of ribosomal RNA (rRNA) in the subunit structures, which may interfere with subunit association. These subunit structures provided models for 12 rRNA expansion segments and 3 novel r-proteins. Furthermore, the 50S-aRF1 complex structure showed the unique domain orientation of aRF1, possibly explaining P-site transfer RNA (tRNA) release after translation termination. Sac 70S complexes were captured in seven distinct steps of the tRNA translocation reaction, confirming conserved structural features during archaeal ribosome translocation. In aEF2-engaged 70S ribosome complexes, 3D classification of cryo-EM data based on 30S head domain identified two new translocation intermediates with 30S head domain tilted 5-6° enabling its disengagement from the translocated tRNA and its release post-translocation. Additionally, we observed conformational changes to aEF2 during ribosome binding and switching from three different states. Our structural and biochemical data provide new insights into archaeal translation and ribosome translocation. | ||||||
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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 | 8hkv.cif.gz | 2.3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8hkv.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8hkv.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8hkv_validation.pdf.gz | 1.4 MB | Display | wwPDB validaton report |
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| Full document | 8hkv_full_validation.pdf.gz | 1.4 MB | Display | |
| Data in XML | 8hkv_validation.xml.gz | 145.8 KB | Display | |
| Data in CIF | 8hkv_validation.cif.gz | 258.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/hk/8hkv ftp://data.pdbj.org/pub/pdb/validation_reports/hk/8hkv | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 34861MC ![]() 8hkuC ![]() 8hkxC ![]() 8hkyC ![]() 8hkzC ![]() 8hl1C ![]() 8hl2C ![]() 8hl3C ![]() 8hl4C ![]() 8hl5C M: map data used to model this data C: citing same article ( |
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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 , 2 types, 2 molecules A23SA5S
| #1: RNA chain | Mass: 980552.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic) |
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| #2: RNA chain | Mass: 39440.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic)References: GenBank: 68566501 |
+50S ribosomal protein ... , 33 types, 35 molecules AL2PAL3PAL4PAL5PAL6PALX0L10EL13PL141L142L14PL15EL18EL18PL19EL22PL23PL24EL24PL29PL30EL30PL31EL32EL34EL37AL37EL39EL40EL44E...
-Protein , 2 types, 2 molecules L45AL46A
| #35: Protein | Mass: 11662.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic)References: UniProt: Q4J9G6 |
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| #36: Protein | Mass: 8320.918 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic)References: UniProt: Q4J953 |
-Details
| Has protein modification | Y |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: 2D ARRAY / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Sulfolobus acidocaldarius ribosome small sbunit / Type: RIBOSOME / Entity ID: #1-#36 / Source: NATURAL |
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| Source (natural) | Organism: ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic) |
| Buffer solution | pH: 7.5 |
| Specimen | Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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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: 3000 nm / Nominal defocus min: 1000 nm |
| Image recording | Electron dose: 26.7 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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| 3D reconstruction | Resolution: 4.94 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 617754 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 93.74 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Sulfolobus acidocaldarius DSM 639 (acidophilic)
China, 1items
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FIELD EMISSION GUN