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Yorodumi- PDB-5lzf: Structure of the 70S ribosome with fMetSec-tRNASec in the hybrid ... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 5lzf | |||||||||
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| Title | Structure of the 70S ribosome with fMetSec-tRNASec in the hybrid pre-translocation state (H) | |||||||||
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Keywords | RIBOSOME / translation / decoding / recoding / selenocysteine | |||||||||
| Function / homology | Function and homology informationnegative regulation of cytoplasmic translational initiation / 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 / RNA-binding transcription regulator activity ...negative regulation of cytoplasmic translational initiation / 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 / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / translational termination / negative regulation of cytoplasmic translation / four-way junction DNA binding / DnaA-L2 complex / translation repressor activity / regulation of mRNA stability / negative regulation of translational initiation / 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 / translational initiation / 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 / small ribosomal subunit rRNA binding / 5S 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 / ribonucleoprotein complex / 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: 4.6 Å | |||||||||
Authors | Fischer, N. / Neumann, P. / Bock, L.V. / Maracci, C. / Wang, Z. / Paleskava, A. / Konevega, A.L. / Schroeder, G.F. / Grubmueller, H. / Ficner, R. ...Fischer, N. / Neumann, P. / Bock, L.V. / Maracci, C. / Wang, Z. / Paleskava, A. / Konevega, A.L. / Schroeder, G.F. / Grubmueller, H. / Ficner, R. / Rodnina, M.V. / Stark, H. | |||||||||
| Funding support | Germany, 2items
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Citation | Journal: Nature / Year: 2016Title: The pathway to GTPase activation of elongation factor SelB on the ribosome. Authors: Niels Fischer / Piotr Neumann / Lars V Bock / Cristina Maracci / Zhe Wang / Alena Paleskava / Andrey L Konevega / Gunnar F Schröder / Helmut Grubmüller / Ralf Ficner / Marina V Rodnina / Holger Stark / ![]() Abstract: In all domains of life, selenocysteine (Sec) is delivered to the ribosome by selenocysteine-specific tRNA (tRNA) with the help of a specialized translation factor, SelB in bacteria. Sec-tRNA recodes ...In all domains of life, selenocysteine (Sec) is delivered to the ribosome by selenocysteine-specific tRNA (tRNA) with the help of a specialized translation factor, SelB in bacteria. Sec-tRNA recodes a UGA stop codon next to a downstream mRNA stem-loop. Here we present the structures of six intermediates on the pathway of UGA recoding in Escherichia coli by single-particle cryo-electron microscopy. The structures explain the specificity of Sec-tRNA binding by SelB and show large-scale rearrangements of Sec-tRNA. Upon initial binding of SelB-Sec-tRNA to the ribosome and codon reading, the 30S subunit adopts an open conformation with Sec-tRNA covering the sarcin-ricin loop (SRL) on the 50S subunit. Subsequent codon recognition results in a local closure of the decoding site, which moves Sec-tRNA away from the SRL and triggers a global closure of the 30S subunit shoulder domain. As a consequence, SelB docks on the SRL, activating the GTPase of SelB. These results reveal how codon recognition triggers GTPase activation in translational GTPases. | |||||||||
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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 | 5lzf.cif.gz | 3.7 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5lzf.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 5lzf.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 5lzf_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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| Full document | 5lzf_full_validation.pdf.gz | 2.1 MB | Display | |
| Data in XML | 5lzf_validation.xml.gz | 237.9 KB | Display | |
| Data in CIF | 5lzf_validation.cif.gz | 401.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/lz/5lzf ftp://data.pdbj.org/pub/pdb/validation_reports/lz/5lzf | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 4126MC ![]() 4121C ![]() 4122C ![]() 4123C ![]() 4124C ![]() 4125C ![]() 5lzaC ![]() 5lzbC ![]() 5lzcC ![]() 5lzdC ![]() 5lzeC M: map data used to model this data C: citing same article ( |
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| Similar structure data | |
| EM raw data | EMPIAR-10077 (Title: The pathway to GTPase activation of elongation factor SelB on the ribosomeData size: 1.0 TB Data #1: Part 1 - Unprocessed cryo-EM micrographs of E. Coli 70S-SelB-GDPNP-Sec-tRNASec-fMet-tRNAfMet-SECIS mRNA complexes [micrographs - single frame] Data #2: Part 2 - Unprocessed cryo-EM micrographs of E. Coli 70S-SelB-GDPNP-Sec-tRNASec-fMet-tRNAfMet-SECIS mRNA complex [micrographs - single frame] Data #3: ribosomeSelB_particles.mrcs - CTF corrected single particle images of E. Coli 70S-SelB-GDPNP-Sec-tRNASec-fMet-tRNAfMet-SECIS mRNA complex [picked particles - multiframe - processed]) |
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Links
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Assembly
| Deposited unit | ![]()
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| 1 |
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Components
-RNA chain , 6 types, 6 molecules avxyAB
| #1: RNA chain | Mass: 498908.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #22: RNA chain | Mass: 24818.893 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #23: RNA chain | Mass: 15439.191 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
| #24: RNA chain | Mass: 30670.271 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #25: RNA chain | Mass: 941505.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #26: RNA chain | Mass: 38790.090 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: 11475.364 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #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: 9768.428 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 ... , 30 types, 30 molecules CDEFGIHJKLMNOPQRSTUVWXYZ012346
-Non-polymers , 1 types, 2 molecules 
| #57: Chemical |
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-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: Hybrid pre-translocation state of E. coli ribosome 70S-fMetSec-tRNASec-tRNAfmet-SECIS mRNA complex (H) Type: COMPLEX / Entity ID: #1-#56 / Source: MULTIPLE SOURCES |
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| Molecular weight | Value: 2.5 MDa / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.5 Details: 50 mM Hepes-KOH, pH 7.5, 70 mM NH4Cl, 30 mM KCl, 7 mM MgCl2, 0.6mM spermine, 0.4mM spermidine, 2 mM DTT |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid type: Quantifoil R3.5/1 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
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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 Details: Using a Cs-corrector from CEOS electron optical aberrations were corrected to residual phase errors of 45degree at scattering angles of >12 to 15 mrad. |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 59000 X / Nominal defocus max: 2600 nm / Nominal defocus min: 700 nm / Cs: 0.001 mm / Alignment procedure: ZEMLIN TABLEAU |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 1 sec. / Electron dose: 30 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON II (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 12681 |
| EM imaging optics | Spherical aberration corrector: CEOS Cs-corrector |
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Processing
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| CTF correction | Details: Local CTF correction, after MSA based classification and averaging of local power spectra Type: PHASE FLIPPING ONLY | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 969526 Details: 969526 ribosome particles showing Thon rings better than 3.5A (see CTF correction) | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19868 Details: Gold-standard refinement of independent half maps in Relion 1.3 Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: FLEXIBLE FIT / Target criteria: Maximum likelihood Details: For parts of the model exhibiting larger conformational differences and/or lower local map resolution, additional cycles of real space refinement and manual fitting were performed against ...Details: For parts of the model exhibiting larger conformational differences and/or lower local map resolution, additional cycles of real space refinement and manual fitting were performed against experimental map filtered to lower resolution |
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