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- EMDB-13715: CryoEM structure of E.coli RNA polymerase elongation complex boun... -

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Entry
Database: EMDB / ID: EMD-13715
TitleCryoEM structure of E.coli RNA polymerase elongation complex bound to NusA and NusG (NusA and NusG elongation complex in more-swiveled conformation)
Map data
Sample
  • Complex: NusA and NusG elongation complex in more-swiveled conformation
    • DNA: x 2 types
    • RNA: x 1 types
    • Protein or peptide: x 6 types
  • Ligand: x 2 types
KeywordsNusA and NusG / transcription elongation / cryo-EM / TRANSCRIPTION
Function / homology
Function and homology information


RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / protein complex oligomerization / nitrate assimilation / DNA-templated transcription termination / bacterial-type flagellum assembly / cytosolic DNA-directed RNA polymerase complex / bacterial-type RNA polymerase core enzyme binding ...RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / protein complex oligomerization / nitrate assimilation / DNA-templated transcription termination / bacterial-type flagellum assembly / cytosolic DNA-directed RNA polymerase complex / bacterial-type RNA polymerase core enzyme binding / bacterial-type flagellum-dependent cell motility / cell motility / DNA-templated transcription elongation / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / ribosome biogenesis / 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 / nucleotide binding / DNA-binding transcription factor activity / protein domain specific binding / magnesium ion binding / DNA-templated transcription / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
: / : / : / NusA-like second KH domain / Transcription termination factor NusA, C-terminal duplication / Transcription termination factor NusA / Transcription factor NusA, N-terminal / KH domain, NusA-like / NusA, N-terminal domain superfamily / NusA N-terminal domain ...: / : / : / NusA-like second KH domain / Transcription termination factor NusA, C-terminal duplication / Transcription termination factor NusA / Transcription factor NusA, N-terminal / KH domain, NusA-like / NusA, N-terminal domain superfamily / NusA N-terminal domain / NusA-like first KH domain / Transcription termination/antitermination protein NusA, bacterial / : / Transcription antitermination protein, NusG, bacteria, conserved site / Transcription termination factor nusG signature. / Transcription antitermination protein, NusG / NusG-like / Transcription termination factor nusG / NusG, N-terminal / In Spt5p, this domain may confer affinity for Spt4p. It possesses a RNP-like fold. / Type-1 KH domain profile. / NusG, N-terminal domain superfamily / DNA repair Rad51/transcription factor NusA, alpha-helical / : / SAM-like Helix-hairpin-helix tandem / S1 domain profile. / 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 / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain / S1 domain / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb2, domain 2 / RNA polymerase, beta subunit, protrusion / RNA polymerase Rpb2, domain 2 / RNA polymerase beta subunit / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / 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, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase, N-terminal / RNA polymerase I subunit A N-terminus / RNA polymerase Rpb1, funnel domain superfamily / DNA-directed RNA polymerase, insert domain superfamily / 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 / K homology domain superfamily, prokaryotic type / K homology domain-like, alpha/beta / KOW (Kyprides, Ouzounis, Woese) motif. / Translation protein SH3-like domain superfamily / KOW motif / KOW / Ribosomal protein L2, domain 2 / Nucleic acid-binding, OB-fold
Similarity search - Domain/homology
DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta / Transcription termination/antitermination protein NusA / Transcription termination/antitermination protein NusG
Similarity search - Component
Biological speciesEscherichia coli (E. coli) / Escherichia coli MS 115-1 (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.1 Å
AuthorsZhu C / Guo X
Funding support France, 3 items
OrganizationGrant numberCountry
European Research Council (ERC) France
Laboratories of Excellence (LabEx) France
French Infrastructure for Integrated Structural Biology (FRISBI) France
CitationJournal: Nat Commun / Year: 2022
Title: Transcription factors modulate RNA polymerase conformational equilibrium.
Authors: Chengjin Zhu / Xieyang Guo / Philippe Dumas / Maria Takacs / Mo'men Abdelkareem / Arnaud Vanden Broeck / Charlotte Saint-André / Gabor Papai / Corinne Crucifix / Julio Ortiz / Albert Weixlbaumer /
Abstract: RNA polymerase (RNAP) frequently pauses during the transcription of DNA to RNA to regulate gene expression. Transcription factors NusA and NusG modulate pausing, have opposing roles, but can bind ...RNA polymerase (RNAP) frequently pauses during the transcription of DNA to RNA to regulate gene expression. Transcription factors NusA and NusG modulate pausing, have opposing roles, but can bind RNAP simultaneously. Here we report cryo-EM reconstructions of Escherichia coli RNAP bound to NusG, or NusA, or both. RNAP conformational changes, referred to as swivelling, correlate with transcriptional pausing. NusA facilitates RNAP swivelling to further increase pausing, while NusG counteracts this role. Their structural effects are consistent with biochemical results on two categories of transcriptional pauses. In addition, the structures suggest a cooperative mechanism of NusA and NusG during Rho-mediated transcription termination. Our results provide a structural rationale for the stochastic nature of pausing and termination and how NusA and NusG can modulate it.
History
DepositionOct 9, 2021-
Header (metadata) releaseMar 23, 2022-
Map releaseMar 23, 2022-
UpdateJul 9, 2025-
Current statusJul 9, 2025Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_13715.png

Downloads & links

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Map

FileDownload / File: emd_13715.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.)
1.09 Å/pix.
x 280 pix.
= 305.2 Å		1.09 Å/pix.
x 280 pix.
= 305.2 Å		1.09 Å/pix.
x 280 pix.
= 305.2 Å

Surface

Projections

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.09 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.2
Minimum - Maximum-0.64752233 - 1.5564779
Average (Standard dev.)0.00919899 (±0.062787205)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 305.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: #1

Fileemd_13715_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: #2

Fileemd_13715_additional_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : NusA and NusG elongation complex in more-swiveled conformation

EntireName: NusA and NusG elongation complex in more-swiveled conformation
Components
  • Complex: NusA and NusG elongation complex in more-swiveled conformation
    • DNA: ntDNA
    • DNA: tDNA
    • RNA: RNA
    • 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
    • Protein or peptide: Transcription termination/antitermination protein NusG
    • Protein or peptide: Transcription termination/antitermination protein NusA
  • Ligand: MAGNESIUM ION
  • Ligand: ZINC ION

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Supramolecule #1: NusA and NusG elongation complex in more-swiveled conformation

SupramoleculeName: NusA and NusG elongation complex in more-swiveled conformation
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#9
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: ntDNA

MacromoleculeName: ntDNA / type: dna / ID: 1 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 12.063754 KDa
SequenceString:
(DG)(DG)(DT)(DC)(DA)(DG)(DT)(DA)(DC)(DG) (DT)(DC)(DC)(DT)(DA)(DT)(DC)(DG)(DA)(DT) (DC)(DT)(DT)(DC)(DG)(DG)(DA)(DA)(DG) (DA)(DG)(DA)(DT)(DT)(DC)(DA)(DG)(DA)(DG)

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Macromolecule #2: tDNA

MacromoleculeName: tDNA / type: dna / ID: 2 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 11.897609 KDa
SequenceString:
(DC)(DT)(DC)(DT)(DG)(DA)(DA)(DT)(DC)(DT) (DC)(DT)(DT)(DC)(DC)(DG)(DA)(DC)(DG)(DC) (DG)(DC)(DC)(DG)(DC)(DG)(DG)(DG)(DA) (DC)(DG)(DT)(DA)(DC)(DT)(DG)(DA)(DC)(DC)

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Macromolecule #3: RNA

MacromoleculeName: RNA / type: rna / ID: 3 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 4.532764 KDa
SequenceString:
GAGUCCGCGG CGCG

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Macromolecule #4: DNA-directed RNA polymerase subunit alpha

MacromoleculeName: DNA-directed RNA polymerase subunit alpha / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 36.55868 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MQGSVTEFLK PRLVDIEQVS STHAKVTLEP LERGFGHTLG NALRRILLSS MPGCAVTEVE IDGVLHEYST KEGVQEDILE ILLNLKGLA VRVQGKDEVI LTLNKSGIGP VTAADITHDG DVEIVKPQHV ICHLTDENAS ISMRIKVQRG RGYVPASTRI H SEEDERPI ...String:
MQGSVTEFLK PRLVDIEQVS STHAKVTLEP LERGFGHTLG NALRRILLSS MPGCAVTEVE IDGVLHEYST KEGVQEDILE ILLNLKGLA VRVQGKDEVI LTLNKSGIGP VTAADITHDG DVEIVKPQHV ICHLTDENAS ISMRIKVQRG RGYVPASTRI H SEEDERPI GRLLVDACYS PVERIAYNVE AARVEQRTDL DKLVIEMETN GTIDPEEAIR RAATILAEQL EAFVDLRDVR QP EVKEEKP EFDPILLRPV DDLELTVRSA NCLKAEAIHY IGDLVQRTEV ELLKTPNLGK KSLTEIKDVL ASRGLSLGMR LEN WPPASI ADE

UniProtKB: DNA-directed RNA polymerase subunit alpha

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Macromolecule #5: DNA-directed RNA polymerase subunit beta

MacromoleculeName: DNA-directed RNA polymerase subunit beta / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 150.820875 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MVYSYTEKKR IRKDFGKRPQ VLDVPYLLSI QLDSFQKFIE QDPEGQYGLE AAFRSVFPIQ SYSGNSELQY VSYRLGEPVF DVQECQIRG VTYSAPLRVK LRLVIYEREA PEGTVKDIKE QEVYMGEIPL MTDNGTFVIN GTERVIVSQL HRSPGVFFDS D KGKTHSSG ...String:
MVYSYTEKKR IRKDFGKRPQ VLDVPYLLSI QLDSFQKFIE QDPEGQYGLE AAFRSVFPIQ SYSGNSELQY VSYRLGEPVF DVQECQIRG VTYSAPLRVK LRLVIYEREA PEGTVKDIKE QEVYMGEIPL MTDNGTFVIN GTERVIVSQL HRSPGVFFDS D KGKTHSSG KVLYNARIIP YRGSWLDFEF DPKDNLFVRI DRRRKLPATI ILRALNYTTE QILDLFFEKV IFEIRDNKLQ ME LVPERLR GETASFDIEA NGKVYVEKGR RITARHIRQL EKDDVKLIEV PVEYIAGKVV AKDYIDESTG ELICAANMEL SLD LLAKLS QSGHKRIETL FTNDLDHGPY ISETLRVDPT NDRLSALVEI YRMMRPGEPP TREAAESLFE NLFFSEDRYD LSAV GRMKF NRSLLREEIE GSGILSKDDI IDVMKKLIDI RNGKGEVDDI DHLGNRRIRS VGEMAENQFR VGLVRVERAV KERLS LGDL DTLMPQDMIN AKPISAAVKE FFGSSQLSQF MDQNNPLSEI THKRRISALG PGGLTRERAG FEVRDVHPTH YGRVCP IET PEGPNIGLIN SLSVYAQTNE YGFLETPYRK VTDGVVTDEI HYLSAIEEGN YVIAQANSNL DEEGHFVEDL VTCRSKG ES SLFSRDQVDY MDVSTQQVVS VGASLIPFLE HDDANRALMG ANMQRQAVPT LRADKPLVGT GMERAVAVDS GVTAVAKR G GVVQYVDASR IVIKVNEDEM YPGEAGIDIY NLTKYTRSNQ NTCINQMPCV SLGEPVERGD VLADGPSTDL GELALGQNM RVAFMPWNGY NFEDSILVSE RVVQEDRFTT IHIQELACVS RDTKLGPEEI TADIPNVGEA ALSKLDESGI VYIGAEVTGG DILVGKVTP KGETQLTPEE KLLRAIFGEK ASDVKDSSLR VPNGVSGTVI DVQVFTRDGV EKDKRALEIE EMQLKQAKKD L SEELQILE AGLFSRIRAV LVAGGVEAEK LDKLPRDRWL ELGLTDEEKQ NQLEQLAEQY DELKHEFEKK LEAKRRKITQ GD DLAPGVL KIVKVYLAVK RRIQPGDKMA GRHGNKGVIS KINPIEDMPY DENGTPVDIV LNPLGVPSRM NIGQILETHL GMA AKGIGD KINAMLKQQQ EVAKLREFIQ RAYDLGADVR QKVDLSTFSD EEVMRLAENL RKGMPIATPV FDGAKEAEIK ELLK LGDLP TSGQIRLYDG RTGEQFERPV TVGYMYMLKL NHLVDDKMHA RSTGSYSLVT QQPLGGKAQF GGQRFGEMEV WALEA YGAA YTLQEMLTVK SDDVNGRTKM YKNIVDGNHQ MEPGMPESFN VLLKEIRSLG INIELEDE

UniProtKB: DNA-directed RNA polymerase subunit beta

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Macromolecule #6: DNA-directed RNA polymerase subunit beta'

MacromoleculeName: DNA-directed RNA polymerase subunit beta' / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 155.366781 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MKDLLKFLKA QTKTEEFDAI KIALASPDMI RSWSFGEVKK PETINYRTFK PERDGLFCAR IFGPVKDYEC LCGKYKRLKH RGVICEKCG VEVTQTKVRR ERMGHIELAS PTAHIWFLKS LPSRIGLLLD MPLRDIERVL YFESYVVIEG GMTNLERQQI L TEEQYLDA ...String:
MKDLLKFLKA QTKTEEFDAI KIALASPDMI RSWSFGEVKK PETINYRTFK PERDGLFCAR IFGPVKDYEC LCGKYKRLKH RGVICEKCG VEVTQTKVRR ERMGHIELAS PTAHIWFLKS LPSRIGLLLD MPLRDIERVL YFESYVVIEG GMTNLERQQI L TEEQYLDA LEEFGDEFDA KMGAEAIQAL LKSMDLEQEC EQLREELNET NSETKRKKLT KRIKLLEAFV QSGNKPEWMI LT VLPVLPP DLRPLVPLDG GRFATSDLND LYRRVINRNN RLKRLLDLAA PDIIVRNEKR MLQEAVDALL DNGRRGRAIT GSN KRPLKS LADMIKGKQG RFRQNLLGKR VDYSGRSVIT VGPYLRLHQC GLPKKMALEL FKPFIYGKLE LRGLATTIKA AKKM VEREE AVVWDILDEV IREHPVLLNR APTLHRLGIQ AFEPVLIEGK AIQLHPLVCA AYNADFDGDQ MAVHVPLTLE AQLEA RALM MSTNNILSPA NGEPIIVPSQ DVVLGLYYMT RDCVNAKGEG MVLTGPKEAE RLYRSGLASL HARVKVRITE YEKDAN GEL VAKTSLKDTT VGRAILWMIV PKGLPYSIVN QALGKKAISK MLNTCYRILG LKPTVIFADQ IMYTGFAYAA RSGASVG ID DMVIPEKKHE IISEAEAEVA EIQEQFQSGL VTAGERYNKV IDIWAAANDR VSKAMMDNLQ TETVINRDGQ EEKQVSFN S IYMMADSGAR GSAAQIRQLA GMRGLMAKPD GSIIETPITA NFREGLNVLQ YFISTHGARK GLADTALKTA NSGYLTRRL VDVAQDLVVT EDDCGTHEGI MMTPVIEGGD VKEPLRDRVL GRVTAEDVLK PGTADILVPR NTLLHEQWCD LLEENSVDAV KVRSVVSCD TDFGVCAHCY GRDLARGHII NKGEAIGVIA AQSIGEPGTQ LTMRTFHIGG AASRAAAESS IQVKNKGSIK L SNVKSVVN SSGKLVITSR NTELKLIDEF GRTKESYKVP YGAVLAKGDG EQVAGGETVA NWDPHTMPVI TEVSGFVRFT DM IDGQTIT RQTDELTGLS SLVVLDSAER TAGGKDLRPA LKIVDAQGND VLIPGTDMPA QYFLPGKAIV QLEDGVQISS GDT LARIPQ ESGGTKDITG GLPRVADLFE ARRPKEPAIL AEISGIVSFG KETKGKRRLV ITPVDGSDPY EEMIPKWRQL NVFE GERVE RGDVISDGPE APHDILRLRG VHAVTRYIVN EVQDVYRLQG VKINDKHIEV IVRQMLRKAT IVNAGSSDFL EGEQV EYSR VKIANRELEA NGKVGATYSR DLLGITKASL ATESFISAAS FQETTRVLTE AAVAGKRDEL RGLKENVIVG RLIPAG TGY AYHQDRMRRR AAGEAPAAPQ VTAEDASASL AELLNAGLGG SDNE

UniProtKB: DNA-directed RNA polymerase subunit beta'

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Macromolecule #7: DNA-directed RNA polymerase subunit omega

MacromoleculeName: DNA-directed RNA polymerase subunit omega / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 10.249547 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MARVTVQDAV EKIGNRFDLV LVAARRARQM QVGGKDPLVP EENDKTTVIA LREIEEGLIN NQILDVRERQ EQQEQEAAEL QAVTAIAEG RR

UniProtKB: DNA-directed RNA polymerase subunit omega

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Macromolecule #8: Transcription termination/antitermination protein NusG

MacromoleculeName: Transcription termination/antitermination protein NusG
type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: K12
Molecular weightTheoretical: 20.560523 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSEAPKKRWY VVQAFSGFEG RVATSLREHI KLHNMEDLFG EVMVPTEEVV EIRGGQRRKS ERKFFPGYVL VQMVMNDASW HLVRSVPRV MGFIGGTSDR PAPISDKEVD AIMNRLQQVG DKPRPKTLFE PGEMVRVNDG PFADFNGVVE EVDYEKSRLK V SVSIFGRA TPVELDFSQV EKA

UniProtKB: Transcription termination/antitermination protein NusG

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Macromolecule #9: Transcription termination/antitermination protein NusA

MacromoleculeName: Transcription termination/antitermination protein NusA
type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli MS 115-1 (bacteria) / Strain: K12
Molecular weightTheoretical: 54.932684 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MNKEILAVVE AVSNEKALPR EKIFEALESA LATATKKKYE QEIDVRVQID RKSGDFDTFR RWLVVDEVTQ PTKEITLEAA RYEDESLNL GDYVEDQIES VTFDRITTQT AKQVIVQKVR EAERAMVVDQ FREHEGEIIT GVVKKVNRDN ISLDLGNNAE A VILREDML ...String:
MNKEILAVVE AVSNEKALPR EKIFEALESA LATATKKKYE QEIDVRVQID RKSGDFDTFR RWLVVDEVTQ PTKEITLEAA RYEDESLNL GDYVEDQIES VTFDRITTQT AKQVIVQKVR EAERAMVVDQ FREHEGEIIT GVVKKVNRDN ISLDLGNNAE A VILREDML PRENFRPGDR VRGVLYSVRP EARGAQLFVT RSKPEMLIEL FRIEVPEIGE EVIEIKAAAR DPGSRAKIAV KT NDKRIDP VGACVGMRGA RVQAVSTELG GERIDIVLWD DNPAQFVINA MAPADVASIV VDEDKHTMDI AVEAGNLAQA IGR NGQNVR LASQLSGWEL NVMTVDDLQA KHQAEAHAAI DTFTKYLDID EDFATVLVEE GFSTLEELAY VPMKELLEIE GLDE PTVEA LRERAKNALA TIAQAQEESL GDNKPADDLL NLEGVDRDLA FKLAARGVCT LEDLAEQGID DLADIEGLTD EKAGA LIMA ARNICWFGDE A

UniProtKB: Transcription termination/antitermination protein NusA

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Macromolecule #10: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 10 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #11: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 11 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 89013
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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