[English] 日本語
![](img/lk-miru.gif)
- PDB-6rh3: Cryo-EM structure of E. coli RNA polymerase elongation complex bo... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6rh3 | ||||||
---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of E. coli RNA polymerase elongation complex bound to CTP substrate | ||||||
![]() |
| ||||||
![]() | TRANSCRIPTION / E. coli RNA polymerase / CTP / GreB / Elongation complex | ||||||
Function / homology | ![]() 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 ...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 / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / intracellular iron ion homeostasis / protein dimerization activity / response to antibiotic / DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / cytoplasm / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | ||||||
![]() | Abdelkareem, M. / Saint-Andre, C. / Takacs, M. / Papai, G. / Crucifix, C. / Guo, X. / Ortiz, J. / Weixlbaumer, A. | ||||||
Funding support | ![]()
| ||||||
![]() | ![]() Title: Structural Basis of Transcription: RNA Polymerase Backtracking and Its Reactivation. Authors: Mo'men Abdelkareem / Charlotte Saint-André / Maria Takacs / Gabor Papai / Corinne Crucifix / Xieyang Guo / Julio Ortiz / Albert Weixlbaumer / ![]() Abstract: Regulatory sequences or erroneous incorporations during DNA transcription cause RNA polymerase backtracking and inactivation in all kingdoms of life. Reactivation requires RNA transcript cleavage. ...Regulatory sequences or erroneous incorporations during DNA transcription cause RNA polymerase backtracking and inactivation in all kingdoms of life. Reactivation requires RNA transcript cleavage. Essential transcription factors (GreA and GreB, or TFIIS) accelerate this reaction. We report four cryo-EM reconstructions of Escherichia coli RNA polymerase representing the entire reaction pathway: (1) a backtracked complex; a backtracked complex with GreB (2) before and (3) after RNA cleavage; and (4) a reactivated, substrate-bound complex with GreB before RNA extension. Compared with eukaryotes, the backtracked RNA adopts a different conformation. RNA polymerase conformational changes cause distinct GreB states: a fully engaged GreB before cleavage; a disengaged GreB after cleavage; and a dislodged, loosely bound GreB removed from the active site to allow RNA extension. These reconstructions provide insight into the catalytic mechanism and dynamics of RNA cleavage and extension and suggest how GreB targets backtracked complexes without interfering with canonical transcription. | ||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 602.3 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 476 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 90.1 KB | Display | |
Data in CIF | ![]() | 140.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 4882MC ![]() 4885C ![]() 4886C ![]() 4892C ![]() 4893C ![]() 6ri7C ![]() 6ri9C ![]() 6rinC ![]() 6ripC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-DNA chain , 2 types, 2 molecules NT
#1: DNA chain | Mass: 12064.742 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
---|---|
#2: DNA chain | Mass: 11864.623 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
-DNA-directed RNA polymerase subunit ... , 4 types, 5 molecules ABCDE
#3: Protein | Mass: 36558.680 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #4: Protein | | Mass: 150820.875 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rpoB, groN, nitB, rif, ron, stl, stv, tabD, b3987, JW3950 Production host: ![]() ![]() #5: Protein | | Mass: 155366.781 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #6: Protein | | Mass: 8321.375 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
---|
-RNA chain , 1 types, 1 molecules R
#7: RNA chain | Mass: 4503.716 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
---|
-Non-polymers , 3 types, 4 molecules ![](data/chem/img/ZN.gif)
![](data/chem/img/CTP.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/CTP.gif)
![](data/chem/img/MG.gif)
#8: Chemical | #9: Chemical | ChemComp-CTP / | #10: Chemical | ChemComp-MG / | |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Molecular weight | Experimental value: NO | ||||||||||||||||||||||||
Source (natural) |
| ||||||||||||||||||||||||
Source (recombinant) |
| ||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Cryo-EM structure of E. coli RNA polymerase elongation complex bound to CTP substrate | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 46 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| |||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||
3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 107124 / Symmetry type: POINT | |||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | |||||||||||||||
Atomic model building | PDB-ID: 6ALH Accession code: 6ALH / Source name: PDB / Type: experimental model |