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- EMDB-13718: CryoEM structure of E.coli RNA polymerase elongation complex boun... -
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Open data
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Basic information
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Title | CryoEM structure of E.coli RNA polymerase elongation complex bound to NusA (NusA elongation complex in more-swiveled conformation) | ||||||||||||
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![]() | NusA / transcription elongation / cryo-EM / TRANSCRIPTION | ||||||||||||
Function / homology | ![]() bacterial-type RNA polymerase core enzyme binding / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / nitrate assimilation / DNA-directed RNA polymerase complex ...bacterial-type RNA polymerase core enzyme binding / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / 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 / transcription antitermination / DNA-templated transcription initiation / cell motility / DNA-templated transcription termination / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / ribosome biogenesis / protein complex oligomerization / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / protein domain specific binding / DNA-binding transcription factor activity / DNA-templated transcription / nucleotide binding / magnesium ion binding / DNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.1 Å | ||||||||||||
![]() | Zhu C / Guo X / Weixlbaumer A | ||||||||||||
Funding support | ![]()
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![]() | ![]() 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 | ![]() | 79.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 24.4 KB 24.4 KB | Display Display | ![]() |
Images | ![]() | 88 KB | ||
Filedesc metadata | ![]() | 8.3 KB | ||
Others | ![]() ![]() | 42 MB 75.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7pykMC ![]() 7py0C ![]() 7py1C ![]() 7py3C ![]() 7py5C ![]() 7py6C ![]() 7py7C ![]() 7py8C ![]() 7pyjC ![]() 7q0jC ![]() 7q0kC 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: 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_13718_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: #2
File | emd_13718_additional_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
+Entire : NusA elongation complex in more-swiveled conformation
+Supramolecule #1: NusA elongation complex in more-swiveled conformation
+Macromolecule #1: DNA-directed RNA polymerase subunit alpha
+Macromolecule #2: DNA-directed RNA polymerase subunit beta
+Macromolecule #3: DNA-directed RNA polymerase subunit beta'
+Macromolecule #4: DNA-directed RNA polymerase subunit omega
+Macromolecule #5: Transcription termination/antitermination protein NusA
+Macromolecule #6: ntDNA
+Macromolecule #7: tDNA
+Macromolecule #8: RNA
+Macromolecule #9: MAGNESIUM ION
+Macromolecule #10: 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: 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: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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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: 43495 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |