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- EMDB-27956: Mycobacterium tuberculosis RNAP elongation complex -

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Basic information

Entry
Database: EMDB / ID: EMD-27956
TitleMycobacterium tuberculosis RNAP elongation complex
Map data
Sample
  • Complex: Mycobacterium tuberculosis RNAP elongation complex
    • Protein or peptide: DNA-directed RNA polymerase subunit alpha
    • Protein or peptide: DNA-directed RNA polymerase subunit beta
    • Protein or peptide: DNA-directed RNA polymerase subunit beta'
    • Protein or peptide: DNA-directed RNA polymerase subunit omega
    • DNA: DNA (33-MER)
    • DNA: DNA (25-MER)
    • RNA: RNA (5'-R(P*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
KeywordsRNA polymerase / transcription factor / elongation / pausing / TRANSCRIPTION / TRANSFERASE-DNA-RNA complex
Function / homology
Function and homology information


DNA-directed RNA polymerase complex / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / protein dimerization activity ...DNA-directed RNA polymerase complex / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / protein dimerization activity / magnesium ion binding / DNA binding / zinc ion binding / 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 / 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, alpha subunit / DNA-directed RNA polymerase beta subunit, bacterial-type / 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 Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / 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-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase subunit alpha
Similarity search - Component
Biological speciesMycobacterium tuberculosis (bacteria) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsDelbeau M / Darst SA / Campbell EA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: Mol Cell / Year: 2023
Title: Structural and functional basis of the universal transcription factor NusG pro-pausing activity in Mycobacterium tuberculosis.
Authors: Madeleine Delbeau / Expery O Omollo / Ruby Froom / Steven Koh / Rachel A Mooney / Mirjana Lilic / Joshua J Brewer / Jeremy Rock / Seth A Darst / Elizabeth A Campbell / Robert Landick /
Abstract: Transcriptional pauses mediate regulation of RNA biogenesis. DNA-encoded pause signals trigger pausing by stabilizing RNA polymerase (RNAP) swiveling and inhibiting DNA translocation. The N-terminal ...Transcriptional pauses mediate regulation of RNA biogenesis. DNA-encoded pause signals trigger pausing by stabilizing RNA polymerase (RNAP) swiveling and inhibiting DNA translocation. The N-terminal domain (NGN) of the only universal transcription factor, NusG/Spt5, modulates pausing through contacts to RNAP and DNA. Pro-pausing NusGs enhance pauses, whereas anti-pausing NusGs suppress pauses. Little is known about pausing and NusG in the human pathogen Mycobacterium tuberculosis (Mtb). We report that MtbNusG is pro-pausing. MtbNusG captures paused, swiveled RNAP by contacts to the RNAP protrusion and nontemplate-DNA wedged between the NGN and RNAP gate loop. In contrast, anti-pausing Escherichia coli (Eco) NGN contacts the MtbRNAP gate loop, inhibiting swiveling and pausing. Using CRISPR-mediated genetics, we show that pro-pausing NGN is required for mycobacterial fitness. Our results define an essential function of mycobacterial NusG and the structural basis of pro- versus anti-pausing NusG activity, with broad implications for the function of all NusG orthologs.
History
DepositionAug 26, 2022-
Header (metadata) releaseMar 22, 2023-
Map releaseMar 22, 2023-
UpdateOct 11, 2023-
Current statusOct 11, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27956.png

Downloads & links

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Map

FileDownload / File: emd_27956.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 300 pix.
= 324.75 Å		1.08 Å/pix.
x 300 pix.
= 324.75 Å		1.08 Å/pix.
x 300 pix.
= 324.75 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.0825 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.4
Minimum - Maximum-5.4576735 - 6.5233207
Average (Standard dev.)0.002908589 (±0.14253478)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 324.75 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_27956_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_27956_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Sample components

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Entire : Mycobacterium tuberculosis RNAP elongation complex

EntireName: Mycobacterium tuberculosis RNAP elongation complex
Components
  • Complex: Mycobacterium tuberculosis RNAP elongation complex
    • Protein or peptide: DNA-directed RNA polymerase subunit alpha
    • Protein or peptide: DNA-directed RNA polymerase subunit beta
    • Protein or peptide: DNA-directed RNA polymerase subunit beta'
    • Protein or peptide: DNA-directed RNA polymerase subunit omega
    • DNA: DNA (33-MER)
    • DNA: DNA (25-MER)
    • RNA: RNA (5'-R(P*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION

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Supramolecule #1: Mycobacterium tuberculosis RNAP elongation complex

SupramoleculeName: Mycobacterium tuberculosis RNAP elongation complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)

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Macromolecule #1: DNA-directed RNA polymerase subunit alpha

MacromoleculeName: DNA-directed RNA polymerase subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)
Molecular weightTheoretical: 37.745328 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MLISQRPTLS EDVLTDNRSQ FVIEPLEPGF GYTLGNSLRR TLLSSIPGAA VTSIRIDGVL HEFTTVPGVK EDVTEIILNL KSLVVSSEE DEPVTMYLRK QGPGEVTAGD IVPPAGVTVH NPGMHIATLN DKGKLEVELV VERGRGYVPA VQNRASGAEI G RIPVDSIY ...String:
MLISQRPTLS EDVLTDNRSQ FVIEPLEPGF GYTLGNSLRR TLLSSIPGAA VTSIRIDGVL HEFTTVPGVK EDVTEIILNL KSLVVSSEE DEPVTMYLRK QGPGEVTAGD IVPPAGVTVH NPGMHIATLN DKGKLEVELV VERGRGYVPA VQNRASGAEI G RIPVDSIY SPVLKVTYKV DATRVEQRTD FDKLILDVET KNSISPRDAL ASAGKTLVEL FGLARELNVE AEGIEIGPSP AE ADHIASF ALPIDDLDLT VRSYNCLKRE GVHTVGELVA RTESDLLDIR NFGQKSIDEV KIKLHQLGLS LKDSPPSFDP SEV AGYDVA TGTWSTEGAY DEQDYAETEQ L

UniProtKB: DNA-directed RNA polymerase subunit alpha

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Macromolecule #2: DNA-directed RNA polymerase subunit beta

MacromoleculeName: DNA-directed RNA polymerase subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)
Molecular weightTheoretical: 129.372031 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: LADSRQSKTA ASPSPSRPQS SSNNSVPGAP NRVSFAKLRE PLEVPGLLDV QTDSFEWLIG SPRWRESAAE RGDVNPVGGL EEVLYELSP IEDFSGSMSL SFSDPRFDDV KAPVDECKDK DMTYAAPLFV TAEFINNNTG EIKSQTVFMG DFPMMTEKGT F IINGTERV ...String:
LADSRQSKTA ASPSPSRPQS SSNNSVPGAP NRVSFAKLRE PLEVPGLLDV QTDSFEWLIG SPRWRESAAE RGDVNPVGGL EEVLYELSP IEDFSGSMSL SFSDPRFDDV KAPVDECKDK DMTYAAPLFV TAEFINNNTG EIKSQTVFMG DFPMMTEKGT F IINGTERV VVSQLVRSPG VYFDETIDKS TDKTLHSVKV IPSRGAWLEF DVDKRDTVGV RIDRKRRQPV TVLLKALGWT SE QIVERFG FSEIMRSTLE KDNTVGTDEA LLDIYRKLRP GEPPTKESAQ TLLENLFFKE KRYDLARVGR YKVNKKLGLH VGE PITSST LTEEDVVATI EYLVRLHEGQ TTMTVPGGVE VPVETDDIDH FGNRRLRTVG ELIQNQIRVG MSRMERVVRE RMTT QDVEA ITPQTLINIR PVVAAIKEFF GTSQLSQFMD QNNPLSGLTH KRRLSALGPG GLSRERAGLE VRDVHPSHYG RMCPI ETPE GPNIGLIGSL SVYARVNPFG FIETPYRKVV DGVVSDEIVY LTADEEDRHV VAQANSPIDA DGRFVEPRVL VRRKAG EVE YVPSSEVDYM DVSPRQMVSV ATAMIPFLEH DDANRALMGA NMQRQAVPLV RSEAPLVGTG MELRAAIDAG DVVVAEE SG VIEEVSADYI TVMHDNGTRR TYRMRKFARS NHGTCANQCP IVDAGDRVEA GQVIADGPCT DDGEMALGKN LLVAIMPW E GHNYEDAIIL SNRLVEEDVL TSIHIEEHEI DARDTKLGAE EITRDIPNIS DEVLADLDER GIVRIGAEVR DGDILVGKV TPKGETELTP EERLLRAIFG EKAREVRDTS LKVPHGESGK VIGIRVFSRE DEDELPAGVN ELVRVYVAQK RKISDGDKLA GRHGNKGVI GKILPVEDMP FLADGTPVDI ILNTHGVPRR MNIGQILETH LGWCAHSGWK VDAAKGVPDW AARLPDELLE A QPNAIVST PVFDGAQEAE LQGLLSCTLP NRDGDVLVDA DGKAMLFDGR SGEPFPYPVT VGYMYIMKLH HLVDDKIHAR ST GPYSMIT QQPLGGKAQF GGQRFGEMEC WAMQAYGAAY TLQELLTIKS DDTVGRVKVY EAIVKGENIP EPGIPESFKV LLK ELQSLC LNVEVLSSDG AAIELREGED EDLERAAANL GINLSRNESA SVEDLA

UniProtKB: DNA-directed RNA polymerase subunit beta

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Macromolecule #3: DNA-directed RNA polymerase subunit beta'

MacromoleculeName: DNA-directed RNA polymerase subunit beta' / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)
Molecular weightTheoretical: 147.097094 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: GAMLDVNFFD ELRIGLATAE DIRQWSYGEV KKPETINYRT LKPEKDGLFC EKIFGPTRDW ECYCGKYKRV RFKGIICERC GVEVTRAKV RRERMGHIEL AAPVTHIWYF KGVPSRLGYL LDLAPKDLEK IIYFAAYVIT SVDEEMRHNE LSTLEAEMAV E RKAVEDQR ...String:
GAMLDVNFFD ELRIGLATAE DIRQWSYGEV KKPETINYRT LKPEKDGLFC EKIFGPTRDW ECYCGKYKRV RFKGIICERC GVEVTRAKV RRERMGHIEL AAPVTHIWYF KGVPSRLGYL LDLAPKDLEK IIYFAAYVIT SVDEEMRHNE LSTLEAEMAV E RKAVEDQR DGELEARAQK LEADLAELEA EGAKADARRK VRDGGEREMR QIRDRAQREL DRLEDIWSTF TKLAPKQLIV DE NLYRELV DRYGEYFTGA MGAESIQKLI ENFDIDAEAE SLRDVIRNGK GQKKLRALKR LKVVAAFQQS GNSPMGMVLD AVP VIPPEL RPMVQLDGGR FATSDLNDLY RRVINRNNRL KRLIDLGAPE IIVNNEKRML QESVDALFDN GRRGRPVTGP GNRP LKSLS DLLKGKQGRF RQNLLGKRVD YSGRSVIVVG PQLKLHQCGL PKLMALELFK PFVMKRLVDL NHAQNIKSAK RMVER QRPQ VWDVLEEVIA EHPVLLNRAP TLHRLGIQAF EPMLVEGKAI QLHPLVCEAF NADFDGDQMA VHLPLSAEAQ AEARIL MLS SNNILSPASG RPLAMPRLDM VTGLYYLTTE VPGDTGEYQP ASGDHPETGV YSSPAEAIMA ADRGVLSVRA KIKVRLT QL RPPVEIEAEL FGHSGWQPGD AWMAETTLGR VMFNELLPLG YPFVNKQMHK KVQAAIINDL AERYPMIVVA QTVDKLKD A GFYWATRSGV TVSMADVLVP PRKKEILDHY EERADKVEKQ FQRGALNHDE RNEALVEIWK EATDEVGQAL REHYPDDNP IITIVDSGAT GNFTQTRTLA GMKGLVTNPK GEFIPRPVKS SFREGLTVLE YFINTHGARK GLADTALRTA DSGYLTRRLV DVSQDVIVR EHDCQTERGI VVELAERAPD GTLIRDPYIE TSAYARTLGT DAVDEAGNVI VERGQDLGDP EIDALLAAGI T QVKVRSVL TCATSTGVCA TCYGRSMATG KLVDIGEAVG IVAAQSIGEP GTQLTMRTFH QGGVGEDITG GLPRVQELFE AR VPRGKAP IADVTGRVRL EDGERFYKIT IVPDDGGEEV VYDKISKRQR LRVFKHEDGS ERVLSDGDHV EVGQQLMEGS ADP HEVLRV QGPREVQIHL VREVQEVYRA QGVSIHDKHI EVIVRQMLRR VTIIDSGSTE FLPGSLIDRA EFEAENRRVV AEGG EPAAG RPVLMGITKA SLATDSWLSA ASFQETTRVL TDAAINCRSD KLNGLKENVI IGKLIPAGTG INRYRNIAVQ PTEEA RAAA YTIPSYEDQY YSPDFGAATG AAVPLDDYGY SDYR

UniProtKB: DNA-directed RNA polymerase subunit beta'

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Macromolecule #4: DNA-directed RNA polymerase subunit omega

MacromoleculeName: DNA-directed RNA polymerase subunit omega / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)
Molecular weightTheoretical: 11.819075 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
VSISQSDASL AAVPAVDQFD PSSGASGGYD TPLGITNPPI DELLDRVSSK YALVIYAAKR ARQINDYYNQ LGEGILEYVG PLVEPGLQE KPLSIALREI HADLLEHTEG E

UniProtKB: DNA-directed RNA polymerase subunit omega

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Macromolecule #5: DNA (33-MER)

MacromoleculeName: DNA (33-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 16.521557 KDa
SequenceString: (DC)(DC)(DG)(DG)(DC)(DA)(DT)(DG)(DA)(DG) (DA)(DG)(DG)(DG)(DT)(DA)(DT)(DT)(DC)(DG) (DC)(DC)(DG)(DC)(DC)(DT)(DA)(DC)(DC) (DT)(DC)(DT)(DC)(DC)(DT)(DA)(DG)(DC)(DC) (DC) (DG)(DC)(DA)(DA)(DG)(DT) ...String:
(DC)(DC)(DG)(DG)(DC)(DA)(DT)(DG)(DA)(DG) (DA)(DG)(DG)(DG)(DT)(DA)(DT)(DT)(DC)(DG) (DC)(DC)(DG)(DC)(DC)(DT)(DA)(DC)(DC) (DT)(DC)(DT)(DC)(DC)(DT)(DA)(DG)(DC)(DC) (DC) (DG)(DC)(DA)(DA)(DG)(DT)(DA)(DT) (DC)(DC)(DG)(DA)(DC)(DG)

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Macromolecule #6: DNA (25-MER)

MacromoleculeName: DNA (25-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 16.589572 KDa
SequenceString: (DC)(DG)(DT)(DC)(DG)(DG)(DA)(DT)(DA)(DC) (DT)(DT)(DG)(DC)(DG)(DG)(DG)(DC)(DT)(DA) (DG)(DC)(DC)(DT)(DC)(DT)(DT)(DT)(DT) (DG)(DG)(DC)(DG)(DG)(DC)(DG)(DA)(DA)(DT) (DA) (DC)(DC)(DC)(DT)(DC)(DT) ...String:
(DC)(DG)(DT)(DC)(DG)(DG)(DA)(DT)(DA)(DC) (DT)(DT)(DG)(DC)(DG)(DG)(DG)(DC)(DT)(DA) (DG)(DC)(DC)(DT)(DC)(DT)(DT)(DT)(DT) (DG)(DG)(DC)(DG)(DG)(DC)(DG)(DA)(DA)(DT) (DA) (DC)(DC)(DC)(DT)(DC)(DT)(DC)(DA) (DT)(DG)(DC)(DC)(DG)(DG)

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Macromolecule #7: RNA (5'-R(P*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3')

MacromoleculeName: RNA (5'-R(P*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3') / type: rna / ID: 7 / Number of copies: 1
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 6.509968 KDa
SequenceString:
GCAUUCAAAG CGGAGAGGUA

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Macromolecule #8: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 8 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #9: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 9 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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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

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 51.24 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6edt

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 593911
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING

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