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Yorodumi- EMDB-13714: CryoEM structure of E.coli RNA polymerase elongation complex boun... -
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Basic information
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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 less-swiveled conformation) | ||||||||||||
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Keywords | NusA and NusG / transcription elongation / cryo-EM / TRANSCRIPTION | ||||||||||||
| Function / homology | Function and homology informationRNA polymerase complex / transcription elongation-coupled chromatin remodeling / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / protein complex oligomerization / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility ...RNA polymerase complex / transcription elongation-coupled chromatin remodeling / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / protein complex oligomerization / 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 / DNA-directed RNA polymerase complex / regulation of DNA-templated transcription elongation / transcription elongation factor complex / transcription antitermination / cell motility / DNA-templated transcription initiation / DNA-templated transcription termination / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / 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 / cytoplasm / cytosol Similarity search - Function | ||||||||||||
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| Method | single particle reconstruction / cryo EM / Resolution: 4.1 Å | ||||||||||||
Authors | Zhu C / Guo X / Weixlbaumer A | ||||||||||||
| Funding support | France, 3 items
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Citation | Journal: Nat Commun / Year: 2022Title: 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. | ||||||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_13714.map.gz | 79.1 MB | EMDB map data format | |
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| Header (meta data) | emd-13714-v30.xml emd-13714.xml | 28.9 KB 28.9 KB | Display Display | EMDB header |
| Images | emd_13714.png | 57.6 KB | ||
| Filedesc metadata | emd-13714.cif.gz | 9.4 KB | ||
| Others | emd_13714_additional_1.map.gz emd_13714_additional_2.map.gz | 75.2 MB 42 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13714 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13714 | HTTPS FTP |
-Validation report
| Summary document | emd_13714_validation.pdf.gz | 516.8 KB | Display | EMDB validaton report |
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| Full document | emd_13714_full_validation.pdf.gz | 516.4 KB | Display | |
| Data in XML | emd_13714_validation.xml.gz | 6.5 KB | Display | |
| Data in CIF | emd_13714_validation.cif.gz | 7.5 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13714 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13714 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7py6MC ![]() 7py0C ![]() 7py1C ![]() 7py3C ![]() 7py5C ![]() 7py7C ![]() 7py8C ![]() 7pyjC ![]() 7pykC ![]() 7q0jC ![]() 7q0kC 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_13714.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_13714_additional_1.map | ||||||||||||
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-Additional map: #2
| File | emd_13714_additional_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : NusA and NusG elongation complex in non-swiveled conformation
+Supramolecule #1: NusA and NusG elongation complex in non-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 |
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Sample preparation
| Buffer | pH: 8 |
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| 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 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 |
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Keywords
Authors
France, 3 items
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Processing
FIELD EMISSION GUN
