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Yorodumi- PDB-6qdw: Cryo-EM structure of the 50S ribosomal subunit at 2.83 Angstroms ... -
+Open data
-Basic information
Entry | Database: PDB / ID: 6qdw | ||||||
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Title | Cryo-EM structure of the 50S ribosomal subunit at 2.83 Angstroms with modeled GBC SecM peptide | ||||||
Components |
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Keywords | RIBOSOME / Translation / 50S ribosome / Nascent peptide chain | ||||||
Function / homology | Function and homology information structural constituent of eye lens / lens development in camera-type eye / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation ...structural constituent of eye lens / lens development in camera-type eye / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / visual perception / mRNA regulatory element binding translation repressor activity / ribosome assembly / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / response to reactive oxygen species / regulation of cell growth / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / large ribosomal subunit / ribosome binding / large ribosomal subunit rRNA binding / 5S rRNA binding / transferase activity / ribosomal large subunit assembly / cytoplasmic translation / cytosolic large ribosomal subunit / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Bos taurus (cattle) Escherichia coli (E. coli) Escherichia coli BL21 (bacteria) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.83 Å | ||||||
Authors | Schulte, L. / Reitz, J. / Hodirnau, V.V. / Kudlinzki, D. / Mao, J. / Glaubitz, C. / Frangakis, A. / Schwalbe, H. | ||||||
Citation | Journal: Nat Commun / Year: 2020 Title: Cysteine oxidation and disulfide formation in the ribosomal exit tunnel. Authors: Linda Schulte / Jiafei Mao / Julian Reitz / Sridhar Sreeramulu / Denis Kudlinzki / Victor-Valentin Hodirnau / Jakob Meier-Credo / Krishna Saxena / Florian Buhr / Julian D Langer / Martin ...Authors: Linda Schulte / Jiafei Mao / Julian Reitz / Sridhar Sreeramulu / Denis Kudlinzki / Victor-Valentin Hodirnau / Jakob Meier-Credo / Krishna Saxena / Florian Buhr / Julian D Langer / Martin Blackledge / Achilleas S Frangakis / Clemens Glaubitz / Harald Schwalbe / Abstract: Understanding the conformational sampling of translation-arrested ribosome nascent chain complexes is key to understand co-translational folding. Up to now, coupling of cysteine oxidation, disulfide ...Understanding the conformational sampling of translation-arrested ribosome nascent chain complexes is key to understand co-translational folding. Up to now, coupling of cysteine oxidation, disulfide bond formation and structure formation in nascent chains has remained elusive. Here, we investigate the eye-lens protein γB-crystallin in the ribosomal exit tunnel. Using mass spectrometry, theoretical simulations, dynamic nuclear polarization-enhanced solid-state nuclear magnetic resonance and cryo-electron microscopy, we show that thiol groups of cysteine residues undergo S-glutathionylation and S-nitrosylation and form non-native disulfide bonds. Thus, covalent modification chemistry occurs already prior to nascent chain release as the ribosome exit tunnel provides sufficient space even for disulfide bond formation which can guide protein folding. | ||||||
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 | 6qdw.cif.gz | 2 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6qdw.ent.gz | 1.5 MB | Display | PDB format |
PDBx/mmJSON format | 6qdw.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6qdw_validation.pdf.gz | 1.4 MB | Display | wwPDB validaton report |
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Full document | 6qdw_full_validation.pdf.gz | 1.5 MB | Display | |
Data in XML | 6qdw_validation.xml.gz | 132.8 KB | Display | |
Data in CIF | 6qdw_validation.cif.gz | 239.8 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qd/6qdw ftp://data.pdbj.org/pub/pdb/validation_reports/qd/6qdw | HTTPS FTP |
-Related structure data
Related structure data | 4531MC 6ys3C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
+50S ribosomal protein ... , 28 types, 28 molecules 01234678cdefghjklmnopqrstuwy
-RNA chain , 3 types, 3 molecules abv
#9: RNA chain | Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Escherichia coli (strain B / BL21-DE3) (bacteria) Variant: delta tig / References: GenBank: 1706539273 |
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#10: RNA chain | Mass: 942342.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BL21(DE3) (bacteria) / Variant: delta tig / References: GenBank: 296142109 |
#29: RNA chain | Mass: 23935.143 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Escherichia coli (strain B / BL21-DE3) (bacteria) Variant: delta tig / References: GenBank: 1730024484 |
-Protein , 1 types, 1 molecules z
#32: Protein | Mass: 7157.970 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Bos taurus (cattle) / Gene: CRYGB / Plasmid: pET15b / Production host: Escherichia coli BL21(DE3) (bacteria) / Variant (production host): delta tig / References: UniProt: P02526 |
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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
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Molecular weight | Experimental value: NO | |||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) | Organism: Escherichia coli BL21(DE3) (bacteria) | |||||||||||||||||||||||||
Buffer solution | pH: 7.5 / Details: Tico Buffer | |||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.12 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1 | |||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
-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: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 0.2 sec. / Electron dose: 1.66 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 3 |
EM imaging optics | Energyfilter name: GIF Quantum SE |
Image scans | Movie frames/image: 36 |
-Processing
Software | Name: PHENIX / Version: dev_3318: / Classification: refinement | ||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.83 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 196254 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||
Atomic model building | PDB-ID: 3JBU | ||||||||||||||||||||||||
Refine LS restraints |
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