+Open data
-Basic information
Entry | Database: PDB / ID: 6ysr | ||||||
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Title | Structure of the P+9 stalled ribosome complex | ||||||
Components |
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Keywords | RIBOSOME / translation / rescue / release | ||||||
Function / homology | Function and homology information stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation ...stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / ribosome assembly / mRNA regulatory element binding translation repressor activity / response to reactive oxygen species / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / regulation of cell growth / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / ribosomal large subunit assembly / ribosomal small subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / ribosome binding / large ribosomal subunit / ribosome biogenesis / cytoplasmic translation / small ribosomal subunit / 5S rRNA binding / cytosolic large ribosomal subunit / transferase activity / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / response to antibiotic / mRNA binding / negative regulation of DNA-templated transcription / DNA binding / RNA binding / zinc ion binding / metal ion binding / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Escherichia coli (E. coli) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
Authors | Chan, K.-H. / Petrychenko, V. / Mueller, C. / Maracci, C. / Holtkamp, W. / Wilson, D.N. / Fischer, N. / Rodnina, M.V. | ||||||
Citation | Journal: Nat Commun / Year: 2020 Title: Mechanism of ribosome rescue by alternative ribosome-rescue factor B. Authors: Kai-Hsin Chan / Valentyn Petrychenko / Claudia Mueller / Cristina Maracci / Wolf Holtkamp / Daniel N Wilson / Niels Fischer / Marina V Rodnina / Abstract: Alternative ribosome-rescue factor B (ArfB) rescues ribosomes stalled on non-stop mRNAs by releasing the nascent polypeptide from the peptidyl-tRNA. By rapid kinetics we show that ArfB selects ...Alternative ribosome-rescue factor B (ArfB) rescues ribosomes stalled on non-stop mRNAs by releasing the nascent polypeptide from the peptidyl-tRNA. By rapid kinetics we show that ArfB selects ribosomes stalled on short truncated mRNAs, rather than on longer mRNAs mimicking pausing on rare codon clusters. In combination with cryo-electron microscopy we dissect the multistep rescue pathway of ArfB, which first binds to ribosomes very rapidly regardless of the mRNA length. The selectivity for shorter mRNAs arises from the subsequent slow engagement step, as it requires longer mRNA to shift to enable ArfB binding. Engagement results in specific interactions of the ArfB C-terminal domain with the mRNA entry channel, which activates peptidyl-tRNA hydrolysis by the N-terminal domain. These data reveal how protein dynamics translate into specificity of substrate recognition and provide insights into the action of a putative rescue factor in mitochondria. | ||||||
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 | 6ysr.cif.gz | 3.2 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6ysr.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 6ysr.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ys/6ysr ftp://data.pdbj.org/pub/pdb/validation_reports/ys/6ysr | HTTPS FTP |
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-Related structure data
Related structure data | 10905MC 6yssC 6ystC 6ysuC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | |
EM raw data | EMPIAR-10443 (Title: Mechanism of Ribosome Rescue by Alternative Release Factor B Data size: 788.2 Data #1: Motion-corrected, dose-weighted micrographs & polished particles of P+9 E. coli ribosome-ArfB complex [micrographs - single frame] Data #2: Motion-corrected, dose-weighted micrographs & extracted particles of P+0 E. coli ribosome-ArfB complex [micrographs - single frame]) |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
+50S ribosomal protein ... , 31 types, 31 molecules 0123456CDEFGHIJKLMNOPQRSTUVWXYZ
-RNA chain , 4 types, 4 molecules ABax
#8: RNA chain | Mass: 941518.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
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#9: 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: 1726050194 |
#34: RNA chain | Mass: 499873.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
#57: RNA chain | Mass: 4716.786 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
#35: Protein | Mass: 26652.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3TPN2 |
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#36: Protein | Mass: 26031.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SQX2 |
#37: Protein | Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR62 |
#38: Protein | Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR27 |
#39: Protein | Mass: 15727.512 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
#40: Protein | Mass: 20055.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: A0A5Q2GFB5 |
#41: Protein | Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR12 |
#42: Protein | Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SRY2 |
#43: Protein | Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SQT7 |
#44: Protein | Mass: 13870.975 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR57 |
#45: Protein | Mass: 13768.157 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SQR7 |
#46: Protein | Mass: 13128.467 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR52 |
#47: Protein | Mass: 11677.637 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SR07 |
#48: Protein | Mass: 10290.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SSQ7 |
#49: Protein | Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SYP2 |
#50: Protein | Mass: 9724.491 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SQY7 |
#51: Protein | Mass: 9005.472 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SFP7 |
#52: Protein | Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3SQW2 |
#53: Protein | Mass: 9708.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3TRH7 |
#54: Protein | Mass: 8524.039 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / References: UniProt: C3STZ7 |
-P-site fMet-Phe- ... , 2 types, 2 molecules vw
#55: Protein/peptide | Mass: 296.385 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
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#56: RNA chain | Mass: 24643.889 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) |
-Non-polymers , 5 types, 339 molecules
#58: Chemical | ChemComp-MG / #59: Chemical | #60: Chemical | ChemComp-CL / | #61: Chemical | #62: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | N |
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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: Stalled E. Coli P+9 ribosome complex 70S-fMet-Phe-tRNAPhe-mRNA Type: RIBOSOME / Entity ID: #1-#57 / Source: NATURAL |
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Molecular weight | Value: 2.6 MDa / Experimental value: NO |
Source (natural) | Organism: Escherichia coli (E. coli) |
Buffer solution | pH: 7.4 / Details: 50 mM HEPES, 30 mM KCl, 7 mM MgCl2 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: Custom-made glow-discharge instrument / Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R3.5/1 |
Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 277 K / Details: Manual blotting & plunge-freezing |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS Details: Aberration corrections performed using Cs image corrector (CEOS company) |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 59000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 200 nm / Calibrated defocus min: 200 nm / Calibrated defocus max: 2500 nm / Cs: 0.01 mm / C2 aperture diameter: 100 µm / Alignment procedure: OTHER |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 50 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of grids imaged: 1 Details: Images were collected in movie mode at 40 fractions per image per second |
EM imaging optics | Spherical aberration corrector: Cs image corrector (CEOS company) |
Image scans | Width: 4096 / Height: 4096 |
-Processing
Software | Name: UCSF ChimeraX / Version: 0.93/v8 / Classification: model building / URL: https://www.rbvi.ucsf.edu/chimerax/ / Os: Windows / Type: package | |||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 968783 | |||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 25347 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Space: REAL | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building |
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