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- PDB-6bjs: CryoEM structure of E.coli his pause elongation complex without p... -

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Basic information

Entry
Database: PDB / ID: 6bjs
TitleCryoEM structure of E.coli his pause elongation complex without pause hairpin
Components
  • (DNA (32-MER)) x 2
  • (DNA-directed RNA polymerase subunit ...Polymerase) x 4
  • RNA (29-MER)
Keywordstranscription/dna/rna / DNA-dependent RNA polymerase / TRANSCRIPTION / paused elongation complex / transcription-dna-rna complex
Function / homology
Function and homology information


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 / cell motility / DNA-templated transcription initiation / 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
DNA-directed RNA polymerase, omega subunit / DNA-directed RNA polymerase, subunit beta-prime, bacterial type / DNA-directed RNA polymerase, beta subunit, external 1 domain superfamily / DNA-directed RNA polymerase, beta subunit, external 1 domain / RNA polymerase beta subunit external 1 domain / RNA polymerase, alpha subunit, C-terminal / Bacterial RNA polymerase, alpha chain C terminal domain / DNA-directed RNA polymerase, alpha subunit / DNA-directed RNA polymerase beta subunit, bacterial-type / RNA polymerase Rpb6 ...DNA-directed RNA polymerase, omega subunit / DNA-directed RNA polymerase, subunit beta-prime, bacterial type / DNA-directed RNA polymerase, beta subunit, external 1 domain superfamily / DNA-directed RNA polymerase, beta subunit, external 1 domain / RNA polymerase beta subunit external 1 domain / RNA polymerase, alpha subunit, C-terminal / Bacterial RNA polymerase, alpha chain C terminal domain / DNA-directed RNA polymerase, alpha subunit / DNA-directed RNA polymerase beta subunit, bacterial-type / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RNA polymerase Rpb1, clamp domain superfamily / RPB6/omega subunit-like superfamily / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 4 / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 5 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, RBP11-like subunit / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, beta subunit, conserved site / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerase Rpb2, OB-fold / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerases beta chain signature. / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain / DNA-directed RNA polymerase, subunit 2 / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily / RNA polymerase Rpb2, domain 6
Similarity search - Domain/homology
DNA / DNA (> 10) / RNA / RNA (> 10) / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Salmonella enterica subsp. enterica serovar Typhimurium (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5.5 Å
AuthorsKang, J.Y. / Landick, R. / Darst, S.A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: Mol Cell / Year: 2018
Title: RNA Polymerase Accommodates a Pause RNA Hairpin by Global Conformational Rearrangements that Prolong Pausing.
Authors: Jin Young Kang / Tatiana V Mishanina / Michael J Bellecourt / Rachel Anne Mooney / Seth A Darst / Robert Landick /
Abstract: Sequence-specific pausing by RNA polymerase (RNAP) during transcription plays crucial and diverse roles in gene expression. In bacteria, RNA structures are thought to fold within the RNA exit channel ...Sequence-specific pausing by RNA polymerase (RNAP) during transcription plays crucial and diverse roles in gene expression. In bacteria, RNA structures are thought to fold within the RNA exit channel of the RNAP and can increase pause lifetimes significantly. The biophysical mechanism of pausing is uncertain. We used single-particle cryo-EM to determine structures of paused complexes, including a 3.8-Å structure of an RNA hairpin-stabilized, paused RNAP that coordinates RNA folding in the his operon attenuation control region of E. coli. The structures revealed a half-translocated pause state (RNA post-translocated, DNA pre-translocated) that can explain transcriptional pausing and a global conformational change of RNAP that allosterically inhibits trigger loop folding and can explain pause hairpin action. Pause hairpin interactions with the RNAP RNA exit channel suggest how RNAP guides the formation of nascent RNA structures.
History
DepositionNov 6, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 28, 2018Provider: repository / Type: Initial release
Revision 1.1Dec 11, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.2Dec 18, 2019Group: Other / Category: atom_sites
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3]
Revision 1.3Mar 13, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Assembly

Deposited unit
A: DNA (32-MER)
B: DNA (32-MER)
R: RNA (29-MER)
G: DNA-directed RNA polymerase subunit alpha
H: DNA-directed RNA polymerase subunit alpha
I: DNA-directed RNA polymerase subunit beta
J: DNA-directed RNA polymerase subunit beta'
K: DNA-directed RNA polymerase subunit omega
hetero molecules


Theoretical massNumber of molelcules
Total (without water)398,33011
Polymers398,1758
Non-polymers1553
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area35790 Å2
ΔGint-207 kcal/mol
Surface area153340 Å2

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Components

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DNA chain , 2 types, 2 molecules AB

#1: DNA chain DNA (32-MER)


Mass: 9881.364 Da / Num. of mol.: 1 / Source method: obtained synthetically
Source: (synth.) Salmonella enterica subsp. enterica serovar Typhimurium (bacteria)
#2: DNA chain DNA (32-MER)


Mass: 9706.256 Da / Num. of mol.: 1 / Source method: obtained synthetically
Source: (synth.) Salmonella enterica subsp. enterica serovar Typhimurium (bacteria)

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RNA chain , 1 types, 1 molecules R

#3: RNA chain RNA (29-MER)


Mass: 9231.442 Da / Num. of mol.: 1 / Source method: obtained synthetically
Source: (synth.) Salmonella enterica subsp. enterica serovar Typhimurium (bacteria)

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DNA-directed RNA polymerase subunit ... , 4 types, 5 molecules GHIJK

#4: Protein DNA-directed RNA polymerase subunit alpha / Polymerase / RNAP subunit alpha / RNA polymerase subunit alpha / Transcriptase subunit alpha


Mass: 26459.125 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12 / Gene: rpoA, pez, phs, sez, b3295, JW3257 / Production host: Escherichia coli (E. coli) / References: UniProt: P0A7Z4, DNA-directed RNA polymerase
#5: Protein DNA-directed RNA polymerase subunit beta / Polymerase / RNAP subunit beta / RNA polymerase subunit beta / Transcriptase subunit beta


Mass: 150820.875 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12
Gene: rpoB, groN, nitB, rif, ron, stl, stv, tabD, b3987, JW3950
Production host: Escherichia coli (E. coli) / References: UniProt: P0A8V2, DNA-directed RNA polymerase
#6: Protein DNA-directed RNA polymerase subunit beta' / Polymerase / RNAP subunit beta' / RNA polymerase subunit beta' / Transcriptase subunit beta'


Mass: 155366.781 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12 / Gene: rpoC, tabB, b3988, JW3951 / Production host: Escherichia coli (E. coli) / References: UniProt: P0A8T7, DNA-directed RNA polymerase
#7: Protein DNA-directed RNA polymerase subunit omega / Polymerase / RNAP omega subunit / RNA polymerase omega subunit / Transcriptase subunit omega


Mass: 10249.547 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12 / Gene: rpoZ, b3649, JW3624 / Production host: Escherichia coli (E. coli) / References: UniProt: P0A800, DNA-directed RNA polymerase

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Non-polymers , 2 types, 3 molecules

#8: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#9: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: E.coli his pause elongation complex without pause hairpin
Type: COMPLEX / Entity ID: #1-#7 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.4 MDa / Experimental value: NO
Source (natural)Organism: Escherichia coli (E. coli)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 8
Details: 20 mM Tris pH8.0, 150 mM potassium glutamate, 5 mM MgCl2, 5 mM DTT
SpecimenConc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: C-flat
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 29500 X / Nominal defocus max: 2400 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 10 sec. / Electron dose: 72.4 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 2910
Image scansWidth: 3710 / Height: 3838 / Movie frames/image: 50 / Used frames/image: 3-50

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Processing

SoftwareName: PHENIX / Version: 1.12_2829: / Classification: refinement
EM software
IDNameVersionCategory
2SerialEMimage acquisition
4CTFFIND4CTF correction
7UCSF Chimera1.11model fitting
9RELION2initial Euler assignment
10RELION2final Euler assignment
11RELION2classification
12RELION23D reconstruction
13PHENIX1.12model refinement
CTF correctionType: NONE
Particle selectionNum. of particles selected: 408000
3D reconstructionResolution: 5.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 43900 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00626670
ELECTRON MICROSCOPYf_angle_d0.93236294
ELECTRON MICROSCOPYf_dihedral_angle_d8.93716191
ELECTRON MICROSCOPYf_chiral_restr0.0554156
ELECTRON MICROSCOPYf_plane_restr0.0074528

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