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- PDB-6alf: CryoEM structure of crosslinked E.coli RNA polymerase elongation ... -

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Basic information

Entry
Database: PDB / ID: 6alf
TitleCryoEM structure of crosslinked E.coli RNA polymerase elongation complex
Components
  • (DNA-directed RNA polymerase subunit ...Polymerase) x 4
  • DNA (29-MER)
  • DNA (5'-D(*GP*GP*GP*CP*TP*AP*AP*TP*GP*AP*CP*GP*GP*CP*GP*AP*AP*TP*AP*CP*CP*C)-3')
  • RNA (5'-R(P*AP*GP*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')
Keywordstranscription/dna/rna / DNA-dependent RNA polymerase / TRANSCRIPTION / 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)
Enterobacteria phage T7 (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.1 Å
AuthorsKang, J.Y. / Darst, S.A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35 GM118130 United States
CitationJournal: Elife / Year: 2017
Title: Structural basis of transcription arrest by coliphage HK022 Nun in an RNA polymerase elongation complex.
Authors: Jin Young Kang / Paul Dominic B Olinares / James Chen / Elizabeth A Campbell / Arkady Mustaev / Brian T Chait / Max E Gottesman / Seth A Darst /
Abstract: Coliphage HK022 Nun blocks superinfection by coliphage λ by stalling RNA polymerase (RNAP) translocation specifically on λ DNA. To provide a structural framework to understand how Nun blocks RNAP ...Coliphage HK022 Nun blocks superinfection by coliphage λ by stalling RNA polymerase (RNAP) translocation specifically on λ DNA. To provide a structural framework to understand how Nun blocks RNAP translocation, we determined structures of RNAP ternary elongation complexes (TECs) with and without Nun by single-particle cryo-electron microscopy. Nun fits tightly into the TEC by taking advantage of gaps between the RNAP and the nucleic acids. The C-terminal segment of Nun interacts with the RNAP β and β' subunits inside the RNAP active site cleft as well as with nearly every element of the nucleic acid scaffold, essentially crosslinking the RNAP and the nucleic acids to prevent translocation, a mechanism supported by the effects of Nun amino acid substitutions. The nature of Nun interactions inside the RNAP active site cleft suggests that RNAP clamp opening is required for Nun to establish its interactions, explaining why Nun acts on paused TECs.
History
DepositionAug 7, 2017Deposition site: RCSB / Processing site: RCSB
SupersessionAug 16, 2017ID: 5UPA
Revision 1.0Aug 16, 2017Provider: repository / Type: Initial release
Revision 1.1Sep 20, 2017Group: Author supporting evidence / Data collection / Category: em_software / pdbx_audit_support
Item: _em_software.name / _pdbx_audit_support.funding_organization
Revision 1.2Nov 8, 2017Group: Derived calculations / Category: pdbx_struct_assembly
Item: _pdbx_struct_assembly.details / _pdbx_struct_assembly.method_details
Revision 1.3Feb 28, 2018Group: Database references / Other / Structure summary / Category: cell / citation / em_entity_assembly
Item: _cell.Z_PDB / _cell.length_a ..._cell.Z_PDB / _cell.length_a / _cell.length_b / _cell.length_c / _citation.title / _em_entity_assembly.entity_id_list
Revision 1.4Mar 28, 2018Group: Data collection / Database references / Category: citation / Item: _citation.title
Revision 1.5Jul 18, 2018Group: Data collection / Category: em_software / Item: _em_software.name
Revision 1.6Dec 18, 2019Group: Author supporting evidence / Other / Category: atom_sites / pdbx_audit_support
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _pdbx_audit_support.funding_organization
Revision 1.7Mar 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 (5'-D(*GP*GP*GP*CP*TP*AP*AP*TP*GP*AP*CP*GP*GP*CP*GP*AP*AP*TP*AP*CP*CP*C)-3')
B: DNA (29-MER)
R: RNA (5'-R(P*AP*GP*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')
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)392,52011
Polymers392,3648
Non-polymers1553
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area39240 Å2
ΔGint-207 kcal/mol
Surface area142060 Å2

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Components

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DNA chain , 2 types, 2 molecules AB

#1: DNA chain DNA (5'-D(*GP*GP*GP*CP*TP*AP*AP*TP*GP*AP*CP*GP*GP*CP*GP*AP*AP*TP*AP*CP*CP*C)-3')


Mass: 8840.689 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Enterobacteria phage T7 (virus)
#2: DNA chain DNA (29-MER)


Mass: 8813.646 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Enterobacteria phage T7 (virus)

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RNA chain , 1 types, 1 molecules R

#3: RNA chain RNA (5'-R(P*AP*GP*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')


Mass: 6509.968 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Enterobacteria phage T7 (virus)

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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: 9094.239 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: crosslinked E.coli RNA polymerase elongation complex / Type: COMPLEX / Entity ID: #1-#7 / Source: RECOMBINANT
Molecular weightValue: 0.393 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 KCl, 5mM MgCl2, 5mM DTT
SpecimenConc.: 3 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 CF-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295.15 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
Image recordingElectron dose: 71 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.11.1_2575: / Classification: refinement
EM software
IDNameVersionCategory
7UCSF Chimeramodel fitting
12RELION2.0beta3D reconstruction
13PHENIXmodel refinement
CTF correctionDetails: Used CTFFIND4 / Type: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 84000 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0126795
ELECTRON MICROSCOPYf_angle_d1.1236494
ELECTRON MICROSCOPYf_dihedral_angle_d9.33616250
ELECTRON MICROSCOPYf_chiral_restr0.0684180
ELECTRON MICROSCOPYf_plane_restr0.0084532

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