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- PDB-7xug: cryo-EM structure of HK022 putRNA-less E.coli RNA polymerase elon... -

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Basic information

Entry
Database: PDB / ID: 7xug
Titlecryo-EM structure of HK022 putRNA-less E.coli RNA polymerase elongation complex
Components
  • (DNA-directed RNA polymerase subunit ...) x 4
  • RNA (nun gene and immunity region)
  • non-template DNA
  • template DNA
KeywordsTRANSCRIPTION / bacterial transcription / HK022 put / anti-termination / anti-pausing / cryo-EM
Function / homology
Function and homology information


RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / 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 / regulation of DNA-templated transcription elongation ...RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / 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 / regulation of DNA-templated transcription elongation / transcription elongation factor complex / transcription antitermination / cell motility / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / 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 / cytoplasm / cytosol
Similarity search - Function
RNA polymerase Rpb1 funnel domain / RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain / Topoisomerase I; Chain A, domain 4 / DNA-directed RNA polymerase, insert domain / RNA Polymerase Alpha Subunit; Chain A, domain 2 / 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 Rpb1 funnel domain / RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain / Topoisomerase I; Chain A, domain 4 / DNA-directed RNA polymerase, insert domain / RNA Polymerase Alpha Subunit; Chain A, domain 2 / 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 beta subunit, bacterial-type / DNA-directed RNA polymerase, alpha subunit / Beta Complex / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / 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 / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, N-terminal / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase Rpb2, domain 2 / RNA polymerase I subunit A N-terminus / RNA polymerase, RBP11-like subunit / 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 / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Beta Barrel / Orthogonal Bundle / Mainly Beta / Mainly Alpha
Similarity search - Domain/homology
: / DNA / DNA (> 10) / DNA (> 100) / 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)
Shamshuipovirus HK022
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.57 Å
AuthorsHwang, S. / Kang, J.Y.
Funding support Korea, Republic Of, United States, 5items
OrganizationGrant numberCountry
National Research Foundation (NRF, Korea)NRF-2019R1F1A1064026 Korea, Republic Of
National Research Foundation (NRF, Korea)NRF-2019M3E5D6066058 Korea, Republic Of
National Research Foundation (NRF, Korea)NRF-2021R1C1C100656011 Korea, Republic Of
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)P41 GM109824 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)P41 GM103314 United States
CitationJournal: Nat Commun / Year: 2022
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
DepositionMay 18, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 10, 2022Provider: repository / Type: Initial release
Revision 1.1Aug 31, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID
Revision 1.2Jul 3, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_initial_refinement_model
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: non-template DNA
B: template DNA
R: RNA (nun gene and immunity region)
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)532,40111
Polymers532,2458
Non-polymers1553
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, mass spectrometry, native mass spectrometry
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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DNA chain , 2 types, 2 molecules AB

#1: DNA chain non-template DNA


Mass: 54756.973 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Shamshuipovirus HK022
#2: DNA chain template DNA


Mass: 54512.855 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Shamshuipovirus HK022

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RNA chain , 1 types, 1 molecules R

#3: RNA chain RNA (nun gene and immunity region)


Mass: 30714.211 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Shamshuipovirus HK022 / References: GenBank: 435309

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

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


Mass: 36558.680 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Gene: rpoA / Production host: Escherichia coli (E. coli) / References: UniProt: P0A7Z4, DNA-directed RNA polymerase
#5: Protein DNA-directed RNA polymerase subunit beta / 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)
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' / RNAP subunit beta' / RNA polymerase subunit beta' / Transcriptase subunit beta'


Mass: 158073.609 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
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 / 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)
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-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#9: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg

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Details

Has ligand of interestN

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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

Component
IDNameTypeEntity IDParent-IDSource
1HK022 putRNA-less E.coli RNA polymerase elongation complexCOMPLEX#1-#70MULTIPLE SOURCES
2E.coli RNA polymeraseCOMPLEX#4-#71RECOMBINANT
3DNA/RNACOMPLEX#1-#31SYNTHETIC
Molecular weightValue: 0.44 MDa / Experimental value: NO
Source (natural)Organism: Escherichia coli (strain K12) (bacteria)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 8 / Details: pH adjustment at 4'C
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMtrisaminomethaneC4H11NO31
210 mMmagnesium glutamateMg(C5H8NO4)21
3150 mMpotassium glutamateKC5H8NO41
45 mMDithiothreitolC4H10O2S21
SpecimenConc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: 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
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2600 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Specimen holderCryogen: NITROGEN
Image recordingElectron 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 opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

SoftwareName: PHENIX / Version: 1.18.2_3874: / Classification: refinement
EM software
IDNameVersionCategoryDetails
1cryoSPARC3.3.1particle selectionblob picker
2cryoSPARC3.3.1particle selectiontemplate picker
3cryoSPARC3.3.1particle selectiontopaz train
4EPUimage acquisition
6GctfCTF correction
9Coot0.9model fitting
11PHENIX1.19.2model refinement
12cryoSPARCinitial Euler assignment
13RELION3.1final Euler assignment
14RELION3.1classification
15RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 411900
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 103900 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 6C6T

6c6t


Accession code: 6C6T / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00726559
ELECTRON MICROSCOPYf_angle_d0.77336128
ELECTRON MICROSCOPYf_dihedral_angle_d13.7894085
ELECTRON MICROSCOPYf_chiral_restr0.0494133
ELECTRON MICROSCOPYf_plane_restr0.0054520

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