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- PDB-7xue: Cryo-EM structure of HK022 putRNA-associated E.coli RNA polymeras... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7xue | ||||||||||||||||||
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Title | Cryo-EM structure of HK022 putRNA-associated E.coli RNA polymerase elongation complex | ||||||||||||||||||
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![]() | TRANSCRIPTION / RNA polymerase / anti-pausing / anti-termination / cryo-EM / HK022 put | ||||||||||||||||||
Function / homology | ![]() 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 / transcription elongation factor complex / regulation of DNA-templated transcription elongation ...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 / 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 / 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 | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.17 Å | ||||||||||||||||||
![]() | Hwang, S.H. / Kang, J.Y. | ||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structural basis of transcriptional regulation by a nascent RNA element, HK022 putRNA. Authors: Seungha Hwang / Paul Dominic B Olinares / Jimin Lee / Jinwoo Kim / Brian T Chait / Rodney A King / Jin Young Kang / ![]() ![]() Abstract: Transcription, in which RNA polymerases (RNAPs) produce RNA from DNA, is the first step of gene expression. As such, it is highly regulated either by trans-elements like protein factors and/or by cis- ...Transcription, in which RNA polymerases (RNAPs) produce RNA from DNA, is the first step of gene expression. As such, it is highly regulated either by trans-elements like protein factors and/or by cis-elements like specific sequences on the DNA. Lambdoid phage HK022 contains a cis-element, put, which suppresses pausing and termination during transcription of the early phage genes. The putRNA transcript solely performs the anti-pausing/termination activities by interacting directly with the E.coli RNAP elongation complex (EC) by an unknown structural mechanism. In this study, we reconstituted putRNA-associated ECs and determined the structures using cryo-electron microscopy. The determined structures of putRNA-associated EC, putRNA-absent EC, and σ-bound EC suggest that the putRNA interaction with the EC counteracts swiveling, a conformational change previously identified to promote pausing and σ might modulate putRNA folding via σ-dependent pausing during elongation. | ||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 641.5 KB | Display | ![]() |
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PDB format | ![]() | 502.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 33466MC ![]() 7xugC ![]() 7xuiC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-DNA chain , 2 types, 2 molecules AB
#1: DNA chain | Mass: 54756.973 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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#2: DNA chain | Mass: 54512.855 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
-RNA chain , 1 types, 1 molecules R
#3: RNA chain | Mass: 30714.211 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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-DNA-directed RNA polymerase subunit ... , 4 types, 5 molecules GHIJK
#4: Protein | Mass: 36558.680 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rpoA / Production host: ![]() ![]() #5: 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: ![]() ![]() #6: Protein | | Mass: 158073.609 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rpoC, tabB, b3988, JW3951 / Production host: ![]() ![]() #7: Protein | | Mass: 10249.547 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rpoZ, b3649, JW3624 / Production host: ![]() ![]() |
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-Non-polymers , 2 types, 3 molecules ![](data/chem/img/ZN.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/MG.gif)
#8: Chemical | #9: Chemical | ChemComp-MG / | |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Value: 0.44 MDa / Experimental value: NO | |||||||||||||||||||||||||
Source (natural) | Organism: ![]() ![]() | |||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | |||||||||||||||||||||||||
Buffer solution | pH: 8 / Details: pH adjustment at 4'C | |||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3 | |||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K / Details: using two layers of blot papers |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2600 nm / Nominal defocus min: 800 nm / Calibrated defocus min: 800 nm / Calibrated defocus max: 3000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Electron dose: 42.16 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 8175 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
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Processing
Software | Name: PHENIX / Version: 1.18.2_3874: / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 411900 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.17 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 120100 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6C6T Accession code: 6C6T / Source name: PDB / Type: experimental model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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