[English] 日本語
Yorodumi- EMDB-37733: Structural basis of translation inhibition by a valine tRNA-deriv... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-37733 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Structural basis of translation inhibition by a valine tRNA-derived fragment | |||||||||
Map data | ||||||||||
Sample |
| |||||||||
Keywords | Sulfolobus acidocaldarius ribosome / RIBOSOME | |||||||||
Function / homology | Function and homology information ribonuclease P activity / tRNA 5'-leader removal / cytosolic ribosome / ribosome biogenesis / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation ...ribonuclease P activity / tRNA 5'-leader removal / cytosolic ribosome / ribosome biogenesis / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / zinc ion binding / cytosol / cytoplasm 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
| |||||||||
Citation | Journal: Life Sci Alliance / Year: 2024 Title: 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. | |||||||||
History |
|
-Structure visualization
Supplemental images |
---|
-Downloads & links
-EMDB archive
Map data | emd_37733.map.gz | 51.5 MB | EMDB map data format | |
---|---|---|---|---|
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 | 958.9 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_37733_full_validation.pdf.gz | 958.5 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 (ref.) |
---|---|
Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_37733.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.087 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Half map: #2
File | emd_37733_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #1
File | emd_37733_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-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
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | 2D array |
-Sample preparation
Concentration | 5 mg/mL |
---|---|
Buffer | pH: 7.5 |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
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 |
-Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
---|---|
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 |