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- PDB-7z8q: Cryo-EM structure of Mycobacterium tuberculosis RNA polymerase core -

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Basic information

Entry
Database: PDB / ID: 7z8q
TitleCryo-EM structure of Mycobacterium tuberculosis RNA polymerase core
Components(DNA-directed RNA polymerase subunit ...) x 4
KeywordsTRANSCRIPTION / RNA polymerase
Function / homology
Function and homology information


Antimicrobial action and antimicrobial resistance in Mtb / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / protein dimerization activity ...Antimicrobial action and antimicrobial resistance in Mtb / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / protein dimerization activity / response to antibiotic / DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / plasma membrane / cytoplasm / cytosol
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 beta subunit, bacterial-type / DNA-directed RNA polymerase, alpha subunit / DNA-directed RNA polymerase, subunit beta-prime ...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 / 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
Similarity search - Domain/homology
DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase subunit alpha
Similarity search - Component
Biological speciesMycobacterium tuberculosis H37Rv (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.08 Å
AuthorsBrodolin, K.
Funding support France, 1items
OrganizationGrant numberCountry
Agence Nationale de la Recherche (ANR)ANR-16-CE11-0025 France
Citation
Journal: Nat Commun / Year: 2023
Title: Structural basis of the mycobacterial stress-response RNA polymerase auto-inhibition via oligomerization
Authors: Morichaud, Z. / Trapani, S. / Vishwakarma, R.K. / Chaloin, L. / Lionne, C. / Lai-Kee-Him, J. / Bron, P. / Brodolin, K.
#1: Journal: Biorxiv / Year: 2022
Title: Structural basis of the mycobacterial stress-response RNA polymerase auto-inhibition via oligomerization
Authors: Morichaud, Z. / Trapani, S. / Vishwakarma, R. / Chaloin, L. / Lionne, C. / Lai-Kee-Him, J. / Bron, P. / Brodolin, K.
History
DepositionMar 18, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Feb 8, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 24, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin
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: DNA-directed RNA polymerase subunit alpha
b: DNA-directed RNA polymerase subunit alpha
c: DNA-directed RNA polymerase subunit beta
d: DNA-directed RNA polymerase subunit beta'
e: DNA-directed RNA polymerase subunit omega
hetero molecules


Theoretical massNumber of molelcules
Total (without water)364,5388
Polymers364,3825
Non-polymers1553
Water00
1


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

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Components

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

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


Mass: 37745.328 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium tuberculosis H37Rv (bacteria)
Strain: ATCC 25618 / H37Rv / Gene: rpoA, Rv3457c, MTCY13E12.10c / Plasmid: pMR4 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P9WGZ1, DNA-directed RNA polymerase
#2: Protein DNA-directed RNA polymerase subunit beta / RNAP subunit beta / RNA polymerase subunit beta / Transcriptase subunit beta


Mass: 129602.344 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: L2E3G4C5 -> V
Source: (gene. exp.) Mycobacterium tuberculosis H37Rv (bacteria)
Strain: ATCC 25618 / H37Rv / Gene: rpoB, Rv0667, MTCI376.08c / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P9WGY9, DNA-directed RNA polymerase
#3: Protein DNA-directed RNA polymerase subunit beta' / RNAP subunit beta' / RNA polymerase subunit beta' / Transcriptase subunit beta'


Mass: 147438.344 Da / Num. of mol.: 1 / Mutation: contains C-terminal 6xHis-tag
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium tuberculosis H37Rv (bacteria)
Strain: ATCC 25618 / H37Rv / Gene: rpoC, Rv0668, MTCI376.07c / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P9WGY7, DNA-directed RNA polymerase
#4: Protein DNA-directed RNA polymerase subunit omega / RNAP omega subunit / RNA polymerase omega subunit / Transcriptase subunit omega


Mass: 11851.140 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium tuberculosis H37Rv (bacteria)
Strain: ATCC 25618 / H37Rv / Gene: rpoZ, Rv1390, MTCY21B4.07 / Plasmid: pMR4 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P9WGY5, DNA-directed RNA polymerase

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Non-polymers , 2 types, 3 molecules

#5: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY

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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: DNA-dependent RNA polymerase core / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightValue: 0.4 MDa / Experimental value: NO
Source (natural)Organism: Mycobacterium tuberculosis H37Rv (bacteria)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
Buffer solutionpH: 7.9
SpecimenConc.: 1.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2
VitrificationCryogen name: ETHANE

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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 FIELD / Nominal defocus max: 7000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 49.6 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 3064

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Processing

SoftwareName: PHENIX / Version: 1.19_4092: / Classification: refinement
EM software
IDNameCategory
4GctfCTF correction
7UCSF Chimeramodel fitting
9cryoSPARCinitial Euler assignment
10cryoSPARCfinal Euler assignment
12cryoSPARC3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 721752
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.08 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 55008 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 7PP4

7pp4


Accession code: 7PP4 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00322869
ELECTRON MICROSCOPYf_angle_d0.52530984
ELECTRON MICROSCOPYf_dihedral_angle_d9.9848713
ELECTRON MICROSCOPYf_chiral_restr0.0433523
ELECTRON MICROSCOPYf_plane_restr0.0034096

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