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Yorodumi- PDB-5lze: Structure of the 70S ribosome with Sec-tRNASec in the classical p... -
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-Basic information
Entry | Database: PDB / ID: 5lze | |||||||||
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Title | Structure of the 70S ribosome with Sec-tRNASec in the classical pre-translocation state (C) | |||||||||
Components |
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Keywords | RIBOSOME / translation / decoding / recoding / selenocysteine | |||||||||
Function / homology | Function and homology information 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 ...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 / negative regulation of cytoplasmic translation / translational termination / four-way junction DNA binding / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / negative regulation of translational initiation / regulation of mRNA stability / mRNA regulatory element binding translation repressor activity / ribosome assembly / assembly of large subunit precursor of preribosome / positive regulation of RNA splicing / transcription elongation factor complex / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / DNA endonuclease activity / response to reactive oxygen species / transcription antitermination / regulation of cell growth / translational initiation / DNA-templated transcription termination / maintenance of translational fidelity / response to radiation / mRNA 5'-UTR binding / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / large ribosomal subunit / ribosome biogenesis / ribosome binding / regulation of translation / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / large ribosomal subunit rRNA binding / transferase activity / cytosolic small ribosomal subunit / ribosomal large subunit assembly / cytoplasmic translation / cytosolic large ribosomal subunit / tRNA binding / molecular adaptor activity / negative regulation of translation / rRNA binding / ribosome / structural constituent of 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 | Escherichia coli (E. coli) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 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: 2016 Title: 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. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 5lze.cif.gz | 3.7 MB | Display | PDBx/mmCIF format |
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PDB format | pdb5lze.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 5lze.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5lze_validation.pdf.gz | 1.8 MB | Display | wwPDB validaton report |
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Full document | 5lze_full_validation.pdf.gz | 2 MB | Display | |
Data in XML | 5lze_validation.xml.gz | 237.5 KB | Display | |
Data in CIF | 5lze_validation.cif.gz | 400.1 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/lz/5lze ftp://data.pdbj.org/pub/pdb/validation_reports/lz/5lze | HTTPS FTP |
-Related structure data
Related structure data | 4125MC 4121C 4122C 4123C 4124C 4126C 5lzaC 5lzbC 5lzcC 5lzdC 5lzfC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | |
EM raw data | EMPIAR-10077 (Title: The pathway to GTPase activation of elongation factor SelB on the ribosome Data 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]) |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-RNA chain , 7 types, 7 molecules avxyABw
#1: RNA chain | Mass: 498908.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: GenBank: 817573384 |
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#22: RNA chain | Mass: 24818.893 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: GenBank: 687670942 |
#23: RNA chain | Mass: 15439.191 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli) |
#24: RNA chain | Mass: 30670.271 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: GenBank: 1043308734 |
#25: RNA chain | Mass: 941505.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: GenBank: 42756 |
#26: RNA chain | Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: GenBank: 1028475309 |
#57: RNA chain | Mass: 894.612 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
-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) Escherichia coli (E. coli) / References: UniProt: P0A7V0 |
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#3: Protein | Mass: 23078.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7V3 |
#4: Protein | Mass: 23383.002 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7V8 |
#5: Protein | Mass: 16532.088 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7W1 |
#6: Protein | Mass: 11669.371 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P02358 |
#7: Protein | Mass: 16861.523 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P02359 |
#8: Protein | Mass: 14015.361 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7W7 |
#9: Protein | Mass: 14554.882 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7X3 |
#10: Protein | Mass: 11196.988 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7R5 |
#11: Protein | Mass: 12388.068 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7R9 |
#12: Protein | Mass: 13636.961 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7S3 |
#13: Protein | Mass: 12625.753 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7S9 |
#14: Protein | Mass: 11475.364 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0AG59 |
#15: Protein | Mass: 10159.621 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0ADZ4 |
#16: Protein | Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7T3 |
#17: Protein | Mass: 9263.946 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0AG63 |
#18: Protein | Mass: 7606.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7T7 |
#19: Protein | Mass: 9057.626 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7U3 |
#20: Protein | Mass: 9506.190 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P0A7U7 |
#21: Protein | Mass: 7763.073 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: P68679 |
+50S ribosomal protein ... , 30 types, 30 molecules CDEFGIHJKLMNOPQRSTUVWXYZ012346
-Non-polymers , 1 types, 2 molecules
#58: 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 |
-Sample preparation
Component | Name: Classical pre-translocation state of E. coli ribosome 70S-Sec-tRNASec-fMet-tRNAfmet-SECIS mRNA complex (C) Type: COMPLEX / Entity ID: #1-#57 / Source: MULTIPLE SOURCES |
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Molecular weight | Value: 2.5 MDa / Experimental value: NO |
Source (natural) | Organism: Escherichia coli (E. coli) / Strain: MRE600 |
Buffer solution | pH: 7.5 Details: 50 mM Hepes-KOH, pH 7.5, 70 mM NH4Cl, 30 mM KCl, 7 mM MgCl2, 0.6 mM spermine, 0.4 mM 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 % |
-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 |
-Processing
EM software |
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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: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 130705 / 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 |