Yorodumi+
Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-5799 | |||||||||
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| Title | Structure of the Ribosome with Elongation Factor G Trapped in the Pre-Translocation State | |||||||||
Map data | Reconstruction of a pre-translocation ribosome | |||||||||
Sample |
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Keywords | protein structure / translation / EF-G / electron cryo-microscopy / single particle analysis | |||||||||
| Function / homology | Function and homology informationstringent response / 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 ...stringent response / 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 / translational termination / 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 / assembly of large subunit precursor of preribosome / positive regulation of RNA splicing / ribosome assembly / regulation of DNA-templated transcription elongation / transcription elongation factor complex / cytosolic ribosome assembly / response to reactive oxygen species / DNA endonuclease activity / transcription antitermination / regulation of cell growth / DNA-templated transcription termination / response to radiation / maintenance of translational fidelity / mRNA 5'-UTR binding / ribosome biogenesis / large ribosomal subunit / regulation of translation / ribosome binding / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / small ribosomal subunit rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / 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 / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 7.6 Å | |||||||||
Authors | Brilot AF / Korostelev AA / Ermolenko DN / Grigorieff N | |||||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2013Title: Structure of the ribosome with elongation factor G trapped in the pretranslocation state. Authors: Axel F Brilot / Andrei A Korostelev / Dmitri N Ermolenko / Nikolaus Grigorieff / ![]() Abstract: During protein synthesis, tRNAs and their associated mRNA codons move sequentially on the ribosome from the A (aminoacyl) site to the P (peptidyl) site to the E (exit) site in a process catalyzed by ...During protein synthesis, tRNAs and their associated mRNA codons move sequentially on the ribosome from the A (aminoacyl) site to the P (peptidyl) site to the E (exit) site in a process catalyzed by a universally conserved ribosome-dependent GTPase [elongation factor G (EF-G) in prokaryotes and elongation factor 2 (EF-2) in eukaryotes]. Although the high-resolution structure of EF-G bound to the posttranslocation ribosome has been determined, the pretranslocation conformation of the ribosome bound with EF-G and A-site tRNA has evaded visualization owing to the transient nature of this state. Here we use electron cryomicroscopy to determine the structure of the 70S ribosome with EF-G, which is trapped in the pretranslocation state using antibiotic viomycin. Comparison with the posttranslocation ribosome shows that the small subunit of the pretranslocation ribosome is rotated by ∼12° relative to the large subunit. Domain IV of EF-G is positioned in the cleft between the body and head of the small subunit outwardly of the A site and contacts the A-site tRNA. Our findings suggest a model in which domain IV of EF-G promotes the translocation of tRNA from the A to the P site as the small ribosome subunit spontaneously rotates back from the hybrid, rotated state into the nonrotated posttranslocation state. | |||||||||
| History |
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Structure visualization
| Movie |
Movie viewer |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_5799.map.gz | 104.7 MB | EMDB map data format | |
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| Header (meta data) | emd-5799-v30.xml emd-5799.xml | 16 KB 16 KB | Display Display | EMDB header |
| Images | emd_5799_1.jpg emd_5799_2.png | 194.2 KB 211.6 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-5799 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5799 | HTTPS FTP |
-Validation report
| Summary document | emd_5799_validation.pdf.gz | 355.3 KB | Display | EMDB validaton report |
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| Full document | emd_5799_full_validation.pdf.gz | 354.9 KB | Display | |
| Data in XML | emd_5799_validation.xml.gz | 6.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5799 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5799 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 4v7cMC ![]() 5796C ![]() 5797C ![]() 5798C ![]() 5800C ![]() 4v7dC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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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_5799.map.gz / Format: CCP4 / Size: 122.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Reconstruction of a pre-translocation ribosome | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Pre-translocation ribosome with bound A/P, P/E hybrid state tRNA
| Entire | Name: Pre-translocation ribosome with bound A/P, P/E hybrid state tRNA |
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| Components |
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-Supramolecule #1000: Pre-translocation ribosome with bound A/P, P/E hybrid state tRNA
| Supramolecule | Name: Pre-translocation ribosome with bound A/P, P/E hybrid state tRNA type: sample / ID: 1000 / Details: Sample was monodisperse. / Number unique components: 4 |
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| Molecular weight | Theoretical: 3 MDa |
-Supramolecule #1: 70S ribosome
| Supramolecule | Name: 70S ribosome / type: complex / ID: 1 / Recombinant expression: No / Database: NCBI / Ribosome-details: ribosome-prokaryote: ALL |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 3 MDa |
-Macromolecule #1: Transfer RNA
| Macromolecule | Name: Transfer RNA / type: rna / ID: 1 / Name.synonym: tRNA / Classification: TRANSFER / Structure: DOUBLE HELIX / Synthetic?: No |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Experimental: 25 KDa |
-Macromolecule #2: Messenger RNA
| Macromolecule | Name: Messenger RNA / type: rna / ID: 2 / Name.synonym: mRNA / Classification: OTHER / Structure: SINGLE STRANDED / Synthetic?: Yes |
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| Source (natural) | Organism: synthetic construct (others) |
| Molecular weight | Theoretical: 12 KDa |
| Sequence | String: GGCAAGGAGG UAAAAAUGUU UAAACGUAAA UCUACU |
-Macromolecule #3: Viomycin
| Macromolecule | Name: Viomycin / type: ligand / ID: 3 / Name.synonym: Vio / Number of copies: 1 / Recombinant expression: No / Database: NCBI |
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| Source (natural) | Organism: unidentified (others) |
| Molecular weight | Theoretical: 1 KDa |
| Chemical component information | ![]()
ChemComp-PRD_000226: |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.4 mg/mL |
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| Buffer | pH: 7.6 Details: 10 mM HEPES-KOH, 5 mM MgCl2, 90 mM NH4Cl, 2 mM spermidine, 0.1 mM spermine, 6 mM BME, 0.5 mM viomycin, 0.5 mM GTP, 0.5 mM fusidic acid |
| Grid | Details: C-flat 1.2/1.3 holey carbon 400 mesh copper grid, glow discharged with a current of -20 mA for 45 seconds in an EMITECH K100X glow discharge unit |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Instrument: FEI VITROBOT MARK II Method: Freshly glow-disharged grids were loaded into an FEI Mark II Vitrobot and equilibrated to 95% relative humidity at 22 degrees Celsius. 2 microliters of sample was applied through the side ...Method: Freshly glow-disharged grids were loaded into an FEI Mark II Vitrobot and equilibrated to 95% relative humidity at 22 degrees Celsius. 2 microliters of sample was applied through the side port, blotted for 7 seconds with a positional offset of 2, and plunged into liquid ethane. |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Alignment procedure | Legacy - Astigmatism: Automatically corrected using FEI software |
| Date | Nov 2, 2012 |
| Image recording | Category: CCD / Film or detector model: FEI FALCON I (4k x 4k) / Digitization - Sampling interval: 14.0 µm / Number real images: 13341 / Average electron dose: 30 e/Å2 / Bits/pixel: 16 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Calibrated magnification: 134615 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.01 mm / Nominal defocus max: 6.95 µm / Nominal defocus min: 1.15 µm / Nominal magnification: 133333 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Details | Refinement and 3D classification performed by Frealign. See primary citation Supplementary Information for details. |
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| CTF correction | Details: CTFFIND3, FREALIGN per micrograph |
| Final reconstruction | Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 7.6 Å / Resolution method: OTHER / Software - Name: EMAN2, IMAGIC, FREALIGN, RSAMPLE, CTFFIND3 Details: Refinement included data to 12 Angstrom resolution to limit FSC bias. See primary citation Supplementary Information for details. Number images used: 85115 |
-Atomic model buiding 1
| Initial model | PDB ID: ![]() 4gd1 |
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| Software | Name: Chimera, CNS |
| Details | Chain Y not used in refinement. See primary citation Supplementary Information for details. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Cross-correlation |
| Output model | ![]() PDB-4v7c: |
-Atomic model buiding 2
| Initial model | PDB ID: ![]() 3r8s |
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| Software | Name: Chimera, CNS |
| Details | See primary citation Supplementary Information for details. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Cross-correlation |
| Output model | ![]() PDB-4v7c: |
-Atomic model buiding 3
| Initial model | PDB ID: |
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| Software | Name: Chimera, CNS |
| Details | Used to rebuild the L11 stalk. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Cross-correlation |
| Output model | ![]() PDB-4v7c: |
-Atomic model buiding 4
| Initial model | PDB ID: |
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| Software | Name: Chimera, CNS |
| Details | Used to build homology model for L1. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Cross-correlation |
| Output model | ![]() PDB-4v7c: |
-Atomic model buiding 5
| Initial model | PDB ID: |
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| Software | Name: Chimera, CNS |
| Details | Used to build homology model for L10. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Cross-correlation |
| Output model | ![]() PDB-4v7c: |
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