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Yorodumi- EMDB-42561: Cryo-EM structure of the ratcheted Listeria innocua 70S ribosome ... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-42561 | |||||||||||||||
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Title | Cryo-EM structure of the ratcheted Listeria innocua 70S ribosome in complex with p/E-tRNA (structure II-A) | |||||||||||||||
Map data | Ratcheted Listeria innocua 70S ribosome in complex with p/E-tRNA (Structure II-A) Composite Map | |||||||||||||||
Sample |
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Keywords | cryo-EM / recycling / time-resolved / RIBOSOME | |||||||||||||||
Function / homology | Function and homology information large ribosomal subunit / transferase activity / small ribosomal subunit / ribosomal large subunit assembly / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex ...large ribosomal subunit / transferase activity / small ribosomal subunit / ribosomal large subunit assembly / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / mRNA binding / zinc ion binding / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | Listeria innocua (bacteria) / Escherichia coli (E. coli) / Escherichia phage T4 (virus) | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||
Authors | Seely SM / Basu RS / Gagnon MG | |||||||||||||||
Funding support | United States, 4 items
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Citation | Journal: Nucleic Acids Res / Year: 2024 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
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_42561.map.gz | 250.9 MB | EMDB map data format | |
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Header (meta data) | emd-42561-v30.xml emd-42561.xml | 69.9 KB 69.9 KB | Display Display | EMDB header |
Images | emd_42561.png | 149.5 KB | ||
Filedesc metadata | emd-42561.cif.gz | 13.9 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-42561 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-42561 | HTTPS FTP |
-Validation report
Summary document | emd_42561_validation.pdf.gz | 637 KB | Display | EMDB validaton report |
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Full document | emd_42561_full_validation.pdf.gz | 636.6 KB | Display | |
Data in XML | emd_42561_validation.xml.gz | 8.3 KB | Display | |
Data in CIF | emd_42561_validation.cif.gz | 9.5 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42561 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42561 | HTTPS FTP |
-Related structure data
Related structure data | 8uu6MC 8uu4C 8uu5C 8uu7C 8uu8C 8uu9C 8uuaC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_42561.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Ratcheted Listeria innocua 70S ribosome in complex with p/E-tRNA (Structure II-A) Composite Map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.85 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Sample components
+Entire : Listeria innocua 70S ribosome in complex with p/E-tRNA
+Supramolecule #1: Listeria innocua 70S ribosome in complex with p/E-tRNA
+Macromolecule #1: 16S Ribosomal RNA
+Macromolecule #21: p/E Hybrid State Phenylalanine tRNA
+Macromolecule #22: F-Stop mRNA
+Macromolecule #23: 23S Ribosomal RNA
+Macromolecule #24: 5S Ribosomal RNA
+Macromolecule #2: Small ribosomal subunit protein uS2
+Macromolecule #3: Small ribosomal subunit protein uS3
+Macromolecule #4: Small ribosomal subunit protein uS4
+Macromolecule #5: Small ribosomal subunit protein uS5
+Macromolecule #6: Small ribosomal subunit protein bS6
+Macromolecule #7: Small ribosomal subunit protein uS7
+Macromolecule #8: Small ribosomal subunit protein uS8
+Macromolecule #9: Small ribosomal subunit protein uS9
+Macromolecule #10: Small ribosomal subunit protein uS10
+Macromolecule #11: Small ribosomal subunit protein uS11
+Macromolecule #12: Small ribosomal subunit protein uS12
+Macromolecule #13: Small ribosomal subunit protein uS13
+Macromolecule #14: Small ribosomal subunit protein uS14
+Macromolecule #15: Small ribosomal subunit protein uS15
+Macromolecule #16: Small ribosomal subunit protein bS16
+Macromolecule #17: Small ribosomal subunit protein uS17
+Macromolecule #18: Small ribosomal subunit protein bS18
+Macromolecule #19: Small ribosomal subunit protein uS19
+Macromolecule #20: Small ribosomal subunit protein bS20
+Macromolecule #25: Large ribosomal subunit protein uL2
+Macromolecule #26: Large ribosomal subunit protein uL3
+Macromolecule #27: Large ribosomal subunit protein uL4
+Macromolecule #28: Large ribosomal subunit protein uL5
+Macromolecule #29: Large ribosomal subunit protein uL6
+Macromolecule #30: Large ribosomal subunit protein uL13
+Macromolecule #31: Large ribosomal subunit protein uL14
+Macromolecule #32: Large ribosomal subunit protein uL15
+Macromolecule #33: Large ribosomal subunit protein uL16
+Macromolecule #34: Large ribosomal subunit protein bL17
+Macromolecule #35: Large ribosomal subunit protein uL18
+Macromolecule #36: Large ribosomal subunit protein bL19
+Macromolecule #37: Large ribosomal subunit protein bL20
+Macromolecule #38: Large ribosomal subunit protein bL21
+Macromolecule #39: Large ribosomal subunit protein uL22
+Macromolecule #40: Large ribosomal subunit protein uL23
+Macromolecule #41: Large ribosomal subunit protein uL24
+Macromolecule #42: Large ribosomal subunit protein bL27
+Macromolecule #43: Large ribosomal subunit protein bL28
+Macromolecule #44: Large ribosomal subunit protein uL29
+Macromolecule #45: Large ribosomal subunit protein uL30
+Macromolecule #46: Large ribosomal subunit protein bL31B
+Macromolecule #47: Large ribosomal subunit protein bL32
+Macromolecule #48: Large ribosomal subunit protein bL33
+Macromolecule #49: Large ribosomal subunit protein bL34
+Macromolecule #50: Large ribosomal subunit protein bL35
+Macromolecule #51: Large ribosomal subunit protein bL36
+Macromolecule #52: MAGNESIUM ION
+Macromolecule #53: ZINC ION
+Macromolecule #54: POTASSIUM ION
+Macromolecule #55: water
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.6 |
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Grid | Model: Quantifoil R2/1 / Material: GOLD / Mesh: 200 / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: OTHER |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 85 % / Chamber temperature: 295 K / Instrument: LEICA EM GP |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: INTEGRATING / Number grids imaged: 1 / Number real images: 10151 / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.3000000000000003 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 96000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |