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Yorodumi- PDB-6enf: Cryo-EM structure of a polyproline-stalled ribosome in the absenc... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 6enf | ||||||||||||
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| Title | Cryo-EM structure of a polyproline-stalled ribosome in the absence of EF-P | ||||||||||||
Components |
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Keywords | RIBOSOME / Proline / EF-P / nascent chain | ||||||||||||
| Function / homology | Function and homology informationnegative regulation of cytoplasmic translational initiation / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis / RNA-binding transcription regulator activity ...negative regulation of cytoplasmic translational initiation / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / four-way junction DNA binding / DnaA-L2 complex / translation repressor activity / negative regulation of translational initiation / regulation of mRNA stability / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / positive regulation of RNA splicing / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / response to reactive oxygen species / ribosome assembly / transcription elongation factor complex / DNA endonuclease activity / transcription antitermination / regulation of cell growth / translational initiation / DNA-templated transcription termination / response to radiation / maintenance of translational fidelity / mRNA 5'-UTR binding / regulation of translation / large ribosomal subunit / ribosome biogenesis / ribosome binding / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / 5S rRNA binding / small ribosomal subunit / 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 / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | ![]() | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||
Authors | Huter, P. / Arenz, S. / Wilson, D.N. | ||||||||||||
| Funding support | Germany, Netherlands, 3items
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Citation | Journal: Mol Cell / Year: 2017Title: Structural Basis for Polyproline-Mediated Ribosome Stalling and Rescue by the Translation Elongation Factor EF-P. Authors: Paul Huter / Stefan Arenz / Lars V Bock / Michael Graf / Jan Ole Frister / Andre Heuer / Lauri Peil / Agata L Starosta / Ingo Wohlgemuth / Frank Peske / Jiří Nováček / Otto Berninghausen ...Authors: Paul Huter / Stefan Arenz / Lars V Bock / Michael Graf / Jan Ole Frister / Andre Heuer / Lauri Peil / Agata L Starosta / Ingo Wohlgemuth / Frank Peske / Jiří Nováček / Otto Berninghausen / Helmut Grubmüller / Tanel Tenson / Roland Beckmann / Marina V Rodnina / Andrea C Vaiana / Daniel N Wilson / ![]() Abstract: Ribosomes synthesizing proteins containing consecutive proline residues become stalled and require rescue via the action of uniquely modified translation elongation factors, EF-P in bacteria, or ...Ribosomes synthesizing proteins containing consecutive proline residues become stalled and require rescue via the action of uniquely modified translation elongation factors, EF-P in bacteria, or archaeal/eukaryotic a/eIF5A. To date, no structures exist of EF-P or eIF5A in complex with translating ribosomes stalled at polyproline stretches, and thus structural insight into how EF-P/eIF5A rescue these arrested ribosomes has been lacking. Here we present cryo-EM structures of ribosomes stalled on proline stretches, without and with modified EF-P. The structures suggest that the favored conformation of the polyproline-containing nascent chain is incompatible with the peptide exit tunnel of the ribosome and leads to destabilization of the peptidyl-tRNA. Binding of EF-P stabilizes the P-site tRNA, particularly via interactions between its modification and the CCA end, thereby enforcing an alternative conformation of the polyproline-containing nascent chain, which allows a favorable substrate geometry for peptide bond formation. | ||||||||||||
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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 | 6enf.cif.gz | 3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6enf.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6enf.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6enf_validation.pdf.gz | 1.2 MB | Display | wwPDB validaton report |
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| Full document | 6enf_full_validation.pdf.gz | 1.3 MB | Display | |
| Data in XML | 6enf_validation.xml.gz | 193.2 KB | Display | |
| Data in CIF | 6enf_validation.cif.gz | 335.4 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/en/6enf ftp://data.pdbj.org/pub/pdb/validation_reports/en/6enf | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 3898MC ![]() 3899C ![]() 3900C ![]() 3901C ![]() 3902C ![]() 3903C ![]() 6enjC ![]() 6enuC M: map data used to model this data C: citing same article ( |
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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 , 5 types, 5 molecules avABx
| #1: RNA chain | Mass: 498725.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #22: RNA chain | Mass: 910.612 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
| #23: RNA chain | Mass: 941305.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #24: RNA chain | Mass: 38813.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #53: RNA chain | Mass: 24846.746 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-30S ribosomal protein ... , 20 types, 20 molecules bcdefghijklmnopqrstu
| #2: Protein | Mass: 24253.943 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #3: Protein | Mass: 23078.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #4: Protein | Mass: 23383.002 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #5: Protein | Mass: 16532.088 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #6: Protein | Mass: 11669.371 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #7: Protein | Mass: 16861.523 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #8: Protein | Mass: 14015.361 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #9: Protein | Mass: 14554.882 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #10: Protein | Mass: 11196.988 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #11: Protein | Mass: 12388.068 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #12: Protein | Mass: 13636.961 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #13: Protein | Mass: 12625.753 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #14: Protein | Mass: 11546.442 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
| #15: Protein | Mass: 10159.621 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #16: Protein | Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #17: Protein | Mass: 9263.946 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #18: Protein | Mass: 7606.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #19: Protein | Mass: 9057.626 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #20: Protein | Mass: 9506.190 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #21: Protein | Mass: 7763.073 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+50S ribosomal protein ... , 28 types, 28 molecules CDEFGJKLMNOPQRSTUVWXYZ012346
-Details
| Has protein modification | Y |
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-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: Polyproline stalled ribosome in the absence of elongation factor P Type: RIBOSOME / Entity ID: all / Source: NATURAL |
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| Molecular weight | Value: 3 MDa / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.4 |
| Specimen | 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: SPOT SCAN |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 28 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 75089 / Symmetry type: POINT |
| Atomic model building | Space: REAL |
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Netherlands, 3items
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