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Yorodumi- EMDB-37733: Structural basis of translation inhibition by a valine tRNA-deriv... -
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Basic information
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| Title | Structural basis of translation inhibition by a valine tRNA-derived fragment | |||||||||
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Keywords | Sulfolobus acidocaldarius ribosome / RIBOSOME | |||||||||
| Function / homology | Function and homology informationribonuclease P activity / tRNA 5'-leader removal / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / ribosome biogenesis / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit ...ribonuclease P activity / tRNA 5'-leader removal / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / ribosome biogenesis / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / tRNA binding / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / RNA binding / zinc ion binding / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() Sulfolobus acidocaldarius DSM 639 (acidophilic) / Haloferax volcanii (archaea) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 4.1 Å | |||||||||
Authors | Wang YH / Zhou J | |||||||||
| Funding support | China, 1 items
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Citation | Journal: Life Sci Alliance / Year: 2024Title: Structural basis of translation inhibition by a valine tRNA-derived fragment. Authors: Yun Wu / Meng-Ting Ni / Ying-Hui Wang / Chen Wang / Hai Hou / Xing Zhang / Jie Zhou / ![]() Abstract: Translational regulation by non-coding RNAs is a mechanism commonly used by cells to fine-tune gene expression. A fragment derived from an archaeal valine tRNA (Val-tRF) has been previously ...Translational regulation by non-coding RNAs is a mechanism commonly used by cells to fine-tune gene expression. A fragment derived from an archaeal valine tRNA (Val-tRF) has been previously identified to bind the small subunit of the ribosome and inhibit translation in Here, we present three cryo-electron microscopy structures of Val-tRF bound to the small subunit of ribosomes at resolutions between 4.02 and 4.53 Å. Within these complexes, Val-tRF was observed to bind to conserved RNA-interacting sites, including the ribosomal decoding center. The binding of Val-tRF destabilizes helices h24, h44, and h45 and the anti-Shine-Dalgarno sequence of 16S rRNA. The binding position of this molecule partially overlaps with the translation initiation factor aIF1A and occludes the mRNA P-site codon. Moreover, we found that the binding of Val-tRF is associated with steric hindrance of the H69 base of 23S rRNA in the large ribosome subunit, thereby preventing 70S assembly. Our data exemplify how tRNA-derived fragments bind to ribosomes and provide new insights into the mechanisms underlying translation inhibition by Val-tRFs. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_37733.map.gz | 51.5 MB | EMDB map data format | |
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| Header (meta data) | emd-37733-v30.xml emd-37733.xml | 46.4 KB 46.4 KB | Display Display | EMDB header |
| Images | emd_37733.png | 109.5 KB | ||
| Filedesc metadata | emd-37733.cif.gz | 9.5 KB | ||
| Others | emd_37733_half_map_1.map.gz emd_37733_half_map_2.map.gz | 95.7 MB 95.7 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-37733 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-37733 | HTTPS FTP |
-Validation report
| Summary document | emd_37733_validation.pdf.gz | 958.8 KB | Display | EMDB validaton report |
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| Full document | emd_37733_full_validation.pdf.gz | 958.3 KB | Display | |
| Data in XML | emd_37733_validation.xml.gz | 13.5 KB | Display | |
| Data in CIF | emd_37733_validation.cif.gz | 15.9 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-37733 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-37733 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8wq2MC ![]() 8wkpC ![]() 8wq4C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_37733.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.087 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_37733_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_37733_half_map_2.map | ||||||||||||
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Sample components
+Entire : Sulfolobus acidocaldarius ribosome
+Supramolecule #1: Sulfolobus acidocaldarius ribosome
+Macromolecule #1: RNA (1328-MER)
+Macromolecule #2: RNA (26-MER)
+Macromolecule #3: 30S ribosomal protein S2
+Macromolecule #4: 30S ribosomal protein S4e
+Macromolecule #5: 30S ribosomal protein S4
+Macromolecule #6: 30S ribosomal protein S5
+Macromolecule #7: 30S ribosomal protein S6e
+Macromolecule #8: 30S ribosomal protein S8e
+Macromolecule #9: 30S ribosomal protein S11
+Macromolecule #10: 30S ribosomal protein S12
+Macromolecule #11: 30S ribosomal protein S15
+Macromolecule #12: 30S ribosomal protein S17
+Macromolecule #13: 30S ribosomal protein S24e
+Macromolecule #14: 30S ribosomal protein S27e
+Macromolecule #15: 30S ribosomal protein S3Ae
+Macromolecule #16: 30S ribosomal protein S3
+Macromolecule #17: 30S ribosomal protein S7
+Macromolecule #18: 30S ribosomal protein S9
+Macromolecule #19: 30S ribosomal protein S10
+Macromolecule #20: 30S ribosomal protein S13
+Macromolecule #21: 30S ribosomal protein S14 type Z
+Macromolecule #22: 30S ribosomal protein S17e
+Macromolecule #23: 30S ribosomal protein S19e
+Macromolecule #24: 30S ribosomal protein S19
+Macromolecule #25: 30S ribosomal protein S27ae
+Macromolecule #26: 30S ribosomal protein S28e
+Macromolecule #27: 50S ribosomal protein L7Ae
+Macromolecule #28: Small ribosomal subunit protein uS8
+Macromolecule #29: UNKNOWN LIGAND
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | 2D array |
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Sample preparation
| Concentration | 5 mg/mL |
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| Buffer | pH: 7.5 |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 26.7 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 9742 |
| Initial angle assignment | Type: NOT APPLICABLE |
| Final angle assignment | Type: NOT APPLICABLE |
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About Yorodumi



Keywords
Sulfolobus acidocaldarius DSM 639 (acidophilic)
Authors
China, 1 items
Citation









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FIELD EMISSION GUN

