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Yorodumi- EMDB-13715: CryoEM structure of E.coli RNA polymerase elongation complex boun... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-13715 | ||||||||||||
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Title | CryoEM structure of E.coli RNA polymerase elongation complex bound to NusA and NusG (NusA and NusG elongation complex in more-swiveled conformation) | ||||||||||||
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Sample |
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Keywords | NusA and NusG / transcription elongation / cryo-EM / TRANSCRIPTION | ||||||||||||
Function / homology | Function and homology information transcription elongation-coupled chromatin remodeling / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / protein complex oligomerization / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility ...transcription elongation-coupled chromatin remodeling / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / protein complex oligomerization / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / nitrate assimilation / DNA-directed RNA polymerase complex / transcription elongation factor complex / regulation of DNA-templated transcription elongation / DNA-templated transcription initiation / transcription antitermination / cell motility / DNA-templated transcription termination / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / ribosome biogenesis / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / DNA-binding transcription factor activity / protein domain specific binding / nucleotide binding / DNA-templated transcription / magnesium ion binding / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Escherichia coli (E. coli) / Escherichia coli MS 115-1 (bacteria) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.1 Å | ||||||||||||
Authors | Zhu C / Guo X | ||||||||||||
Funding support | France, 3 items
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Citation | Journal: Nat Commun / Year: 2022 Title: Transcription factors modulate RNA polymerase conformational equilibrium. Authors: Chengjin Zhu / Xieyang Guo / Philippe Dumas / Maria Takacs / Mo'men Abdelkareem / Arnaud Vanden Broeck / Charlotte Saint-André / Gabor Papai / Corinne Crucifix / Julio Ortiz / Albert Weixlbaumer / Abstract: RNA polymerase (RNAP) frequently pauses during the transcription of DNA to RNA to regulate gene expression. Transcription factors NusA and NusG modulate pausing, have opposing roles, but can bind ...RNA polymerase (RNAP) frequently pauses during the transcription of DNA to RNA to regulate gene expression. Transcription factors NusA and NusG modulate pausing, have opposing roles, but can bind RNAP simultaneously. Here we report cryo-EM reconstructions of Escherichia coli RNAP bound to NusG, or NusA, or both. RNAP conformational changes, referred to as swivelling, correlate with transcriptional pausing. NusA facilitates RNAP swivelling to further increase pausing, while NusG counteracts this role. Their structural effects are consistent with biochemical results on two categories of transcriptional pauses. In addition, the structures suggest a cooperative mechanism of NusA and NusG during Rho-mediated transcription termination. Our results provide a structural rationale for the stochastic nature of pausing and termination and how NusA and NusG can modulate it. | ||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_13715.map.gz | 79.1 MB | EMDB map data format | |
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Header (meta data) | emd-13715-v30.xml emd-13715.xml | 25.7 KB 25.7 KB | Display Display | EMDB header |
Images | emd_13715.png | 137.6 KB | ||
Filedesc metadata | emd-13715.cif.gz | 8.5 KB | ||
Others | emd_13715_additional_1.map.gz emd_13715_additional_2.map.gz | 41.9 MB 75.2 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13715 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13715 | HTTPS FTP |
-Validation report
Summary document | emd_13715_validation.pdf.gz | 513.9 KB | Display | EMDB validaton report |
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Full document | emd_13715_full_validation.pdf.gz | 513.5 KB | Display | |
Data in XML | emd_13715_validation.xml.gz | 6.5 KB | Display | |
Data in CIF | emd_13715_validation.cif.gz | 7.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13715 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13715 | HTTPS FTP |
-Related structure data
Related structure data | 7py7MC 7py0C 7py1C 7py3C 7py5C 7py6C 7py8C 7pyjC 7pykC 7q0jC 7q0kC M: atomic model generated by this map C: citing same article (ref.) |
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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_13715.map.gz / Format: CCP4 / Size: 83.7 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: 1.09 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: #1
File | emd_13715_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: #2
File | emd_13715_additional_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : NusA and NusG elongation complex in more-swiveled conformation
+Supramolecule #1: NusA and NusG elongation complex in more-swiveled conformation
+Macromolecule #1: ntDNA
+Macromolecule #2: tDNA
+Macromolecule #3: RNA
+Macromolecule #4: DNA-directed RNA polymerase subunit alpha
+Macromolecule #5: DNA-directed RNA polymerase subunit beta
+Macromolecule #6: DNA-directed RNA polymerase subunit beta'
+Macromolecule #7: DNA-directed RNA polymerase subunit omega
+Macromolecule #8: Transcription termination/antitermination protein NusG
+Macromolecule #9: Transcription termination/antitermination protein NusA
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: INSILICO MODEL |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 89013 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |