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- PDB-8uu5: Cryo-EM structure of the Listeria innocua 70S ribosome (head-swiv... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8uu5 | |||||||||||||||
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Title | Cryo-EM structure of the Listeria innocua 70S ribosome (head-swiveled) in complex with pe/E-tRNA (structure I-B) | |||||||||||||||
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![]() | RIBOSOME / cryo-EM / recycling / time-resolved | |||||||||||||||
Function / homology | ![]() large ribosomal subunit / transferase activity / 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 ...large ribosomal subunit / transferase activity / 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 / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / mRNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | |||||||||||||||
![]() | Seely, S.M. / Basu, R.S. / Gagnon, M.G. | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Mechanistic insights into the alternative ribosome recycling by HflXr. Authors: Savannah M Seely / Ritwika S Basu / Matthieu G Gagnon / ![]() Abstract: During stress conditions such as heat shock and antibiotic exposure, ribosomes stall on messenger RNAs, leading to inhibition of protein synthesis. To remobilize ribosomes, bacteria use rescue ...During stress conditions such as heat shock and antibiotic exposure, ribosomes stall on messenger RNAs, leading to inhibition of protein synthesis. To remobilize ribosomes, bacteria use rescue factors such as HflXr, a homolog of the conserved housekeeping GTPase HflX that catalyzes the dissociation of translationally inactive ribosomes into individual subunits. Here we use time-resolved cryo-electron microscopy to elucidate the mechanism of ribosome recycling by Listeria monocytogenes HflXr. Within the 70S ribosome, HflXr displaces helix H69 of the 50S subunit and induces long-range movements of the platform domain of the 30S subunit, disrupting inter-subunit bridges B2b, B2c, B4, B7a and B7b. Our findings unveil a unique ribosome recycling strategy by HflXr which is distinct from that mediated by RRF and EF-G. The resemblance between HflXr and housekeeping HflX suggests that the alternative ribosome recycling mechanism reported here is universal in the prokaryotic kingdom. | |||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 3.1 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.6 MB | Display | ![]() |
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Full document | ![]() | 1.7 MB | Display | |
Data in XML | ![]() | 196.3 KB | Display | |
Data in CIF | ![]() | 345.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 42557MC ![]() 8uu4C ![]() 8uu6C ![]() 8uu7C ![]() 8uu8C ![]() 8uu9C ![]() 8uuaC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-RNA chain , 5 types, 5 molecules axwAB
#1: RNA chain | Mass: 501949.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#21: RNA chain | Mass: 24644.873 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Deacylated phenylalanyl-tRNA / Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#22: RNA chain | Mass: 6792.157 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: Synthetic 21-nt F-Stop mRNA / Source: (synth.) ![]() |
#23: RNA chain | Mass: 951061.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#24: RNA chain | Mass: 37304.059 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Small ribosomal subunit protein ... , 19 types, 19 molecules bcdefghijklmnopqrst
#2: Protein | Mass: 28359.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#3: Protein | Mass: 24587.158 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#4: Protein | Mass: 22716.852 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#5: Protein | Mass: 17516.182 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#6: Protein | Mass: 11512.063 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#7: Protein | Mass: 17848.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#8: Protein | Mass: 14667.118 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#9: Protein | Mass: 14473.736 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#10: Protein | Mass: 11703.661 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#11: Protein | Mass: 13812.904 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#12: Protein | Mass: 15216.778 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#13: Protein | Mass: 13738.979 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 7164.716 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#15: Protein | Mass: 10656.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#16: Protein | Mass: 10404.196 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#17: Protein | Mass: 10057.699 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#18: Protein | Mass: 9119.831 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#19: Protein | Mass: 10498.116 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#20: Protein | Mass: 9189.573 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+Large ribosomal subunit protein ... , 27 types, 27 molecules CDEFGLMNOPQRSTUVWYZ12345678
-Non-polymers , 3 types, 817 molecules 




#52: Chemical | ChemComp-MG / #53: Chemical | ChemComp-ZN / #54: 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 |
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Sample preparation
Component | Name: Listeria innocua 70S ribosome in complex with pe/E-tRNA Type: RIBOSOME / Entity ID: #1-#51 / Source: MULTIPLE SOURCES |
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Molecular weight | Value: 2.5 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.6 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/1 |
Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 85 % / Chamber temperature: 295 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 96000 X / Nominal defocus max: 2300 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 40 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7572 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 196886 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 7NHN Accession code: 7NHN / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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