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Yorodumi- EMDB-42721: E. coli 70S ribosome with unmodified P/E-tRNAPro(GGG) bound to sl... -
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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | E. coli 70S ribosome with unmodified P/E-tRNAPro(GGG) bound to slippery P-site CCC-C codon | |||||||||
Map data | main map | |||||||||
Sample |
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Keywords | 70S ribosome / tRNA / mRNA / RIBOSOME | |||||||||
| Function / homology | Function and homology informationDnaA-L2 complex / negative regulation of translational initiation / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / ribosome assembly / transcription antitermination / DNA-templated transcription termination / maintenance of translational fidelity ...DnaA-L2 complex / negative regulation of translational initiation / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / ribosome assembly / transcription antitermination / DNA-templated transcription termination / maintenance of translational fidelity / mRNA 5'-UTR binding / large ribosomal subunit / ribosome binding / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / response to antibiotic / mRNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
Authors | Kimbrough EM / Dunham CM / Nguyen HA | |||||||||
| Funding support | United States, 2 items
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Citation | Journal: Nat Commun / Year: 2025Title: An RNA modification prevents extended codon-anticodon interactions from facilitating +1 frameshifting. Authors: Evelyn M Kimbrough / Ha An Nguyen / Haixing Li / Jacob M Mattingly / Nevette A Bailey / Wei Ning / Howard Gamper / Ya-Ming Hou / Ruben L Gonzalez / Christine M Dunham / ![]() Abstract: RNA post-transcriptional modifications act by stabilizing the functional conformations of RNA. While their role in messenger RNA (mRNA) decoding is well established, it is less clear how transfer RNA ...RNA post-transcriptional modifications act by stabilizing the functional conformations of RNA. While their role in messenger RNA (mRNA) decoding is well established, it is less clear how transfer RNA (tRNA) modifications outside the anticodon contribute to tRNA stability and accurate protein synthesis. Absence of such modifications causes translation errors, including mRNA frameshifting. By integrating single-molecule fluorescence resonance energy transfer and cryogenic electron microscopy, we demonstrate that the N-methylguanosine (mG) modification at position 37 of Escherichia coli tRNA is necessary and sufficient for modulating the conformational energy of this tRNA on the ribosome so as to suppress +1 frameshifting otherwise induced by this tRNA. Six structures of E. coli ribosomal complexes carrying tRNA lacking mG37 show this tRNA forms four and even five codon-anticodon base pairs as it moves into the +1 frame, allowing direct visualization of the long-standing hypothesis that a four base pair codon-anticodon can form during +1 frameshifting. | |||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_42721.map.gz | 190.9 MB | EMDB map data format | |
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| Header (meta data) | emd-42721-v30.xml emd-42721.xml | 74.4 KB 74.4 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_42721_fsc.xml | 14.1 KB | Display | FSC data file |
| Images | emd_42721.png | 51.5 KB | ||
| Filedesc metadata | emd-42721.cif.gz | 13.7 KB | ||
| Others | emd_42721_additional_1.map.gz emd_42721_additional_2.map.gz emd_42721_half_map_1.map.gz emd_42721_half_map_2.map.gz | 30.3 MB 216.9 MB 193.6 MB 193.5 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-42721 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-42721 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8uxbMC ![]() 8urmC ![]() 8utjC ![]() 8ux8C ![]() 8uzgC ![]() 8v03C 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_42721.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | main map | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.0691 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Additional map: #2
| File | emd_42721_additional_1.map | ||||||||||||
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| Density Histograms |
-Additional map: #1
| File | emd_42721_additional_2.map | ||||||||||||
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| Density Histograms |
-Half map: half map 1
| File | emd_42721_half_map_1.map | ||||||||||||
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| Annotation | half map 1 | ||||||||||||
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| Density Histograms |
-Half map: half map 2
| File | emd_42721_half_map_2.map | ||||||||||||
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| Annotation | half map 2 | ||||||||||||
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Sample components
+Entire : Ribosomal complex with mRNA and P/E-tRNA
+Supramolecule #1: Ribosomal complex with mRNA and P/E-tRNA
+Macromolecule #1: 23S ribosomal RNA
+Macromolecule #2: 16S ribosomal RNA
+Macromolecule #3: 5S ribosomal RNA
+Macromolecule #4: mRNA
+Macromolecule #5: tRNA^ProL (GGG)
+Macromolecule #6: 50S ribosomal protein L2
+Macromolecule #7: 50S ribosomal protein L3
+Macromolecule #8: 50S ribosomal protein L4
+Macromolecule #9: 50S ribosomal protein L5
+Macromolecule #10: 50S ribosomal protein L6
+Macromolecule #11: 50S ribosomal protein L9
+Macromolecule #12: 50S ribosomal protein L13
+Macromolecule #13: 50S ribosomal protein L14
+Macromolecule #14: 50S ribosomal protein L15
+Macromolecule #15: 50S ribosomal protein L16
+Macromolecule #16: 50S ribosomal protein L17
+Macromolecule #17: 50S ribosomal protein L18
+Macromolecule #18: 50S ribosomal protein L19
+Macromolecule #19: 50S ribosomal protein L20
+Macromolecule #20: 50S ribosomal protein L21
+Macromolecule #21: 50S ribosomal protein L22
+Macromolecule #22: 50S ribosomal protein L23
+Macromolecule #23: 50S ribosomal protein L24
+Macromolecule #24: 50S ribosomal protein L25
+Macromolecule #25: 50S ribosomal protein L27
+Macromolecule #26: 50S ribosomal protein L28
+Macromolecule #27: 50S ribosomal protein L29
+Macromolecule #28: 50S ribosomal protein L30
+Macromolecule #29: 50S ribosomal protein L32
+Macromolecule #30: 50S ribosomal protein L33
+Macromolecule #31: 50S ribosomal protein L34
+Macromolecule #32: 50S ribosomal protein L35
+Macromolecule #33: 50S ribosomal protein L36
+Macromolecule #34: 30S ribosomal protein S2
+Macromolecule #35: 30S ribosomal protein S3
+Macromolecule #36: 30S ribosomal protein S4
+Macromolecule #37: 30S ribosomal protein S5
+Macromolecule #38: 30S ribosomal protein S6
+Macromolecule #39: 30S ribosomal protein S7
+Macromolecule #40: 30S ribosomal protein S8
+Macromolecule #41: 30S ribosomal protein S9
+Macromolecule #42: 30S ribosomal protein S10
+Macromolecule #43: 30S ribosomal protein S11
+Macromolecule #44: 30S ribosomal protein S12
+Macromolecule #45: 30S ribosomal protein S13
+Macromolecule #46: 30S ribosomal protein S14
+Macromolecule #47: 30S ribosomal protein S15
+Macromolecule #48: 30S ribosomal protein S16
+Macromolecule #49: 30S ribosomal protein S17
+Macromolecule #50: 30S ribosomal protein S18
+Macromolecule #51: 30S ribosomal protein S19
+Macromolecule #52: 30S ribosomal protein S20
+Macromolecule #53: 30S ribosomal protein S21
+Macromolecule #54: MAGNESIUM ION
+Macromolecule #55: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.6 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TALOS ARCTICA |
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| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 61.23 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: 2.7 µm / Nominal defocus min: 0.8 µm |
| Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Authors
United States, 2 items
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Processing
FIELD EMISSION GUN


