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- EMDB-11105: Bacillus subtilis RNA Polymerase complex 2 -

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Basic information

Entry
Database: EMDB / ID: EMD-11105
TitleBacillus subtilis RNA Polymerase complex 2
Map data
Sample
  • Complex: Recycling complex of Bacillus subitilis RNAP with HelD
Function / homology
Function and homology information


nucleoid / recombinational repair / 3'-5' DNA helicase activity / DNA-directed RNA polymerase complex / DNA helicase activity / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / DNA helicase / protein dimerization activity ...nucleoid / recombinational repair / 3'-5' DNA helicase activity / DNA-directed RNA polymerase complex / DNA helicase activity / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / DNA helicase / protein dimerization activity / hydrolase activity / response to antibiotic / DNA-templated transcription / regulation of DNA-templated transcription / magnesium ion binding / ATP hydrolysis activity / DNA binding / zinc ion binding / ATP binding / cytosol / cytoplasm
Similarity search - Function
: / RNA polymerase epsilon subunit / RNA polymerase epsilon subunit / DNA-directed RNA polymerase subunit delta / DNA-directed RNA polymerase subunit delta, N-terminal domain superfamily / ASXL, HARE-HTH domain / HB1, ASXL, restriction endonuclease HTH domain / HARE-type HTH domain profile. / UvrD-like helicase C-terminal domain / UvrD-like helicase C-terminal domain ...: / RNA polymerase epsilon subunit / RNA polymerase epsilon subunit / DNA-directed RNA polymerase subunit delta / DNA-directed RNA polymerase subunit delta, N-terminal domain superfamily / ASXL, HARE-HTH domain / HB1, ASXL, restriction endonuclease HTH domain / HARE-type HTH domain profile. / UvrD-like helicase C-terminal domain / UvrD-like helicase C-terminal domain / UvrD/REP helicase N-terminal domain / UvrD-like DNA helicase ATP-binding domain profile. / DNA helicase, UvrD/REP type / UvrD-like helicase, ATP-binding domain / DNA-directed RNA polymerase, subunit beta-prime, bacterial type / 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 Rpb1, domain 3 superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / 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, 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 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / 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 / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit alpha / ATP-dependent DNA helicase rep / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase subunit epsilon / DNA-directed RNA polymerase subunit epsilon / DNA helicase IV / DNA-directed RNA polymerase subunit delta / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase subunit beta'
Similarity search - Component
Biological speciesBacillus subtilis (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.85 Å
AuthorsPei H / Hilal T / Huang Y / Said N / Loll B / Wahl MC
Funding support Germany, United States, 4 items
OrganizationGrant numberCountry
German Research Foundation (DFG)HA 2549/15-2 Germany
German Research Foundation (DFG)RTG 2473-1 Germany
German Research Foundation (DFG)WA 1126/11-1 Germany
National Institutes of Health/National Center for Complementary and Integrative Health (NIH/NCCIH)GM067153 United States
CitationJournal: Nat Commun / Year: 2020
Title: The δ subunit and NTPase HelD institute a two-pronged mechanism for RNA polymerase recycling.
Authors: Hao-Hong Pei / Tarek Hilal / Zhuo A Chen / Yong-Heng Huang / Yuan Gao / Nelly Said / Bernhard Loll / Juri Rappsilber / Georgiy A Belogurov / Irina Artsimovitch / Markus C Wahl /
Abstract: Cellular RNA polymerases (RNAPs) can become trapped on DNA or RNA, threatening genome stability and limiting free enzyme pools, but how RNAP recycling into active states is achieved remains elusive. ...Cellular RNA polymerases (RNAPs) can become trapped on DNA or RNA, threatening genome stability and limiting free enzyme pools, but how RNAP recycling into active states is achieved remains elusive. In Bacillus subtilis, the RNAP δ subunit and NTPase HelD have been implicated in RNAP recycling. We structurally analyzed Bacillus subtilis RNAP-δ-HelD complexes. HelD has two long arms: a Gre cleavage factor-like coiled-coil inserts deep into the RNAP secondary channel, dismantling the active site and displacing RNA, while a unique helical protrusion inserts into the main channel, prying the β and β' subunits apart and, aided by δ, dislodging DNA. RNAP is recycled when, after releasing trapped nucleic acids, HelD dissociates from the enzyme in an ATP-dependent manner. HelD abundance during slow growth and a dimeric (RNAP-δ-HelD) structure that resembles hibernating eukaryotic RNAP I suggest that HelD might also modulate active enzyme pools in response to cellular cues.
History
DepositionMay 29, 2020-
Header (metadata) releaseOct 14, 2020-
Map releaseOct 14, 2020-
UpdateApr 28, 2021-
Current statusApr 28, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6zfb
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_11105.png

Downloads & links

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Map

FileDownload / File: emd_11105.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.31 Å/pix.
x 280 pix.
= 366.08 Å		1.31 Å/pix.
x 280 pix.
= 366.08 Å		1.31 Å/pix.
x 280 pix.
= 366.08 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.30743 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.1 / Movie #1: 0.1
Minimum - Maximum-0.4630368 - 0.91437346
Average (Standard dev.)0.0027195772 (±0.022364665)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 366.08002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.30742857142861.30742857142861.3074285714286
M x/y/z280280280
origin x/y/z0.0000.0000.000
length x/y/z366.080366.080366.080
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS280280280
D min/max/mean-0.4630.9140.003

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Supplemental data

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Sample components

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Entire : Recycling complex of Bacillus subitilis RNAP with HelD

EntireName: Recycling complex of Bacillus subitilis RNAP with HelD
Components
  • Complex: Recycling complex of Bacillus subitilis RNAP with HelD

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Supramolecule #1: Recycling complex of Bacillus subitilis RNAP with HelD

SupramoleculeName: Recycling complex of Bacillus subitilis RNAP with HelD
type: complex / ID: 1 / Parent: 0
Source (natural)Organism: Bacillus subtilis (bacteria)
Molecular weightTheoretical: 600 KDa

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration5 mg/mL
BufferpH: 7.6
GridModel: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 303 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Number real images: 9130 / Average exposure time: 36.0 sec. / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 96000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 1047102
CTF correctionSoftware - Name: CTFFIND (ver. 4)
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.85 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2.14) / Number images used: 176374
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC (ver. 2.12)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 2.14)
Final 3D classificationSoftware - Name: cryoSPARC (ver. 2.12)
FSC plot (resolution estimation)

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