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Open data
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Basic information
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Title | 30S mRNA delivery complex TEC resolved (TEC only) | |||||||||||||||||||||
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![]() | Transcription / translation / coupling / RIBOSOME | |||||||||||||||||||||
Function / homology | ![]() RNA polymerase complex / transcription elongation-coupled chromatin remodeling / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation ...RNA polymerase complex / transcription elongation-coupled chromatin remodeling / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / cell motility / DNA-templated transcription termination / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / ribosome biogenesis / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / response to antibiotic / magnesium ion binding / DNA binding / zinc ion binding / membrane / cytosol / cytoplasm Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() | |||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.2 Å | |||||||||||||||||||||
![]() | Rahil H / Weixlbaumer A / Webster MW | |||||||||||||||||||||
Funding support | European Union, ![]() ![]() ![]()
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![]() | ![]() Title: Molecular basis of mRNA delivery to the bacterial ribosome. Authors: Michael W Webster / Adrien Chauvier / Huma Rahil / Andrea Graziadei / Kristine Charles / Nataliya Miropolskaya / Maria Takacs / Charlotte Saint-André / Juri Rappsilber / Nils G Walter / Albert Weixlbaumer / ![]() ![]() ![]() ![]() Abstract: Protein synthesis begins with the formation of a ribosome-messenger RNA (mRNA) complex. In bacteria, the small ribosomal subunit (30) is recruited to many mRNAs through base pairing with the Shine- ...Protein synthesis begins with the formation of a ribosome-messenger RNA (mRNA) complex. In bacteria, the small ribosomal subunit (30) is recruited to many mRNAs through base pairing with the Shine-Dalgarno (SD) sequence and RNA binding by ribosomal protein bS1. Translation can initiate on nascent mRNAs, and RNA polymerase (RNAP) can promote the recruitment of the pioneering 30. Here, we examined 30 recruitment to nascent mRNAs using cryo-electron microscopy, single-molecule fluorescence colocalization, and in-cell cross-linking mass spectrometry. We show that bS1 delivers the mRNA to the ribosome for SD duplex formation and 30 activation. Additionally, bS1 and RNAP stimulate translation initiation. Our work provides a mechanistic framework for how the SD duplex, ribosomal proteins, and RNAP cooperate in 30 recruitment to mRNAs and establish transcription-translation coupling. | |||||||||||||||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 456.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 28.7 KB 28.7 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 20 KB | Display | ![]() |
Images | ![]() | 56.9 KB | ||
Masks | ![]() | 824 MB | ![]() | |
Filedesc metadata | ![]() | 8.4 KB | ||
Others | ![]() ![]() ![]() | 302.1 MB 448.9 MB 448.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9gurMC ![]() 9gr1C ![]() 9gupC ![]() 9guqC ![]() 9gusC ![]() 9gutC ![]() 9guuC ![]() 9guvC ![]() 9guwC ![]() 9guxC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.84 Å | ||||||||||||||||||||||||||||||||||||
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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-Additional map: #1
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-Half map: #2
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-Half map: #1
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Sample components
+Entire : Transcription elongation complex
+Supramolecule #1: Transcription elongation complex
+Macromolecule #1: DNA-directed RNA polymerase subunit alpha
+Macromolecule #2: DNA-directed RNA polymerase subunit omega
+Macromolecule #6: DNA-directed RNA polymerase subunit alpha
+Macromolecule #7: DNA-directed RNA polymerase subunit beta
+Macromolecule #8: DNA-directed RNA polymerase subunit beta'
+Macromolecule #9: Transcription termination/antitermination protein NusG
+Macromolecule #3: Non-Template DNA strand
+Macromolecule #4: Template DNA strand
+Macromolecule #5: mRNA
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 49.95 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |