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- EMDB-20395: Sigm28-transcription initiation complex with specific promoter at... -

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Basic information

Entry
Database: EMDB / ID: EMD-20395
TitleSigm28-transcription initiation complex with specific promoter at the state 2
Map datasigma28-TIC on specific promoter at state 2 with de novo RNA transcript
Sample
  • Complex: sigm28-transcription initiation complex with specific promoter at the state 2
    • 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: RNA polymerase sigma factor FliA
    • DNA: SYNTHETIC NONTEMPLATE STRAND DNA (54-MER)
    • DNA: SYNTHETIC TEMPLATE STRAND DNA (54-MER)
    • RNA: Nascent RNA
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
Keywordssigma28 / transcription initiation complex / RpoF / ZNR domain / TRANSCRIPTION
Function / homology
Function and homology information


RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / sigma factor activity / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation ...RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / sigma factor activity / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation / DNA-directed RNA polymerase complex / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / cell motility / 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 / DNA-templated transcription / regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
RNA polymerase sigma factor FliA / RNA polymerase sigma factor, FliA/WhiG / Sigma-70 factors family signature 1. / RNA polymerase sigma-70 region 3 / Sigma-70 region 3 / Sigma-70 factors family signature 2. / RNA polymerase sigma-70 / RNA polymerase sigma-70 region 4 / Sigma-70, region 4 / RNA polymerase sigma-70 region 2 ...RNA polymerase sigma factor FliA / RNA polymerase sigma factor, FliA/WhiG / Sigma-70 factors family signature 1. / RNA polymerase sigma-70 region 3 / Sigma-70 region 3 / Sigma-70 factors family signature 2. / RNA polymerase sigma-70 / RNA polymerase sigma-70 region 4 / Sigma-70, region 4 / RNA polymerase sigma-70 region 2 / RNA polymerase sigma-70 like domain / Sigma-70 region 2 / RNA polymerase sigma factor, region 2 / RNA polymerase sigma factor, region 3/4-like / 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, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, RBP11-like subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / 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 alpha / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / RNA polymerase sigma factor FliA
Similarity search - Component
Biological speciesEscherichia coli (E. coli) / Escherichia coli O157:H7 (bacteria) / Escherichia coli O45:K1 (strain S88 / ExPEC) (bacteria) / Escherichia coli (strain K12) (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.91 Å
AuthorsLiu B / Shi W
CitationJournal: Embo J. / Year: 2020
Title: Structural basis of bacterial sigma28-mediated transcription reveals roles of the RNA polymerase zinc-binding domain.
Authors: Shi W / Zhou W / Zhang B / Huang S / Jiang Y / Schammel A / Hu Y / Liu B
History
DepositionJul 2, 2019-
Header (metadata) releaseNov 27, 2019-
Map releaseMay 13, 2020-
UpdateMar 20, 2024-
Current statusMar 20, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.8
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  • Surface view colored by radius
  • Surface level: 0.8
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  • Surface view with fitted model
  • Atomic models: PDB-6pmj
  • Surface level: 0.8
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol

Downloads & links

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Map

FileDownload / File: emd_20395.map.gz / Format: CCP4 / Size: 129.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsigma28-TIC on specific promoter at state 2 with de novo RNA transcript
Voxel sizeX=Y=Z: 0.9 Å
Density
Contour LevelBy AUTHOR: 0.8 / Movie #1: 0.8
Minimum - Maximum-2.1859205 - 5.448721
Average (Standard dev.)-0.019541983 (±0.28944787)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions324324324
Spacing324324324
CellA=B=C: 291.6 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.90.90.9
M x/y/z324324324
origin x/y/z0.0000.0000.000
length x/y/z291.600291.600291.600
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ240240240
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS324324324
D min/max/mean-2.1865.449-0.020

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Supplemental data

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Sample components

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Entire : sigm28-transcription initiation complex with specific promoter at...

EntireName: sigm28-transcription initiation complex with specific promoter at the state 2
Components
  • Complex: sigm28-transcription initiation complex with specific promoter at the state 2
    • 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: RNA polymerase sigma factor FliA
    • DNA: SYNTHETIC NONTEMPLATE STRAND DNA (54-MER)
    • DNA: SYNTHETIC TEMPLATE STRAND DNA (54-MER)
    • RNA: Nascent RNA
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION

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Supramolecule #1: sigm28-transcription initiation complex with specific promoter at...

SupramoleculeName: sigm28-transcription initiation complex with specific promoter at the state 2
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#8
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 450 KDa

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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: Escherichia coli O157:H7 (bacteria)
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 #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: Escherichia coli O45:K1 (strain S88 / ExPEC) (bacteria)
Strain: S88 / ExPEC
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 #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: Escherichia coli O157:H7 (bacteria)
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 #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: Escherichia coli O45:K1 (strain S88 / ExPEC) (bacteria)
Strain: S88 / ExPEC
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 #5: RNA polymerase sigma factor FliA

MacromoleculeName: RNA polymerase sigma factor FliA / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (strain K12) (bacteria) / Strain: K12
Molecular weightTheoretical: 28.62725 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MNSLYTAEGV MDKHSLWQRY VPLVRHEALR LQVRLPASVE LDDLLQAGGI GLLNAVERYD ALQGTAFTTY AVQRIRGAML DELRSRDWV PRSVRRNARE VAQAIGQLEQ ELGRNATETE VAERLGIDIA DYRQMLLDTN NSQLFSYDEW REEHGDSIEL V TDDHQREN ...String:
MNSLYTAEGV MDKHSLWQRY VPLVRHEALR LQVRLPASVE LDDLLQAGGI GLLNAVERYD ALQGTAFTTY AVQRIRGAML DELRSRDWV PRSVRRNARE VAQAIGQLEQ ELGRNATETE VAERLGIDIA DYRQMLLDTN NSQLFSYDEW REEHGDSIEL V TDDHQREN PLQQLLDSNL RQRVMEAIET LPEREKLVLT LYYQEELNLK EIGAVLEVGE SRVSQLHSQA IKRLRTKLGK LL EHHHHHH

UniProtKB: RNA polymerase sigma factor FliA

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Macromolecule #6: SYNTHETIC NONTEMPLATE STRAND DNA (54-MER)

MacromoleculeName: SYNTHETIC NONTEMPLATE STRAND DNA (54-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 16.563621 KDa
SequenceString: (DA)(DG)(DC)(DA)(DA)(DT)(DA)(DA)(DA)(DG) (DT)(DT)(DT)(DC)(DC)(DT)(DT)(DC)(DC)(DT) (DC)(DC)(DT)(DT)(DG)(DC)(DC)(DG)(DA) (DT)(DA)(DA)(DC)(DG)(DA)(DG)(DA)(DT)(DC) (DA) (DA)(DC)(DT)(DT)(DG)(DT) ...String:
(DA)(DG)(DC)(DA)(DA)(DT)(DA)(DA)(DA)(DG) (DT)(DT)(DT)(DC)(DC)(DT)(DT)(DC)(DC)(DT) (DC)(DC)(DT)(DT)(DG)(DC)(DC)(DG)(DA) (DT)(DA)(DA)(DC)(DG)(DA)(DG)(DA)(DT)(DC) (DA) (DA)(DC)(DT)(DT)(DG)(DT)(DT)(DT) (DG)(DC)(DG)(DG)(DC)(DG)

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Macromolecule #7: SYNTHETIC TEMPLATE STRAND DNA (54-MER)

MacromoleculeName: SYNTHETIC TEMPLATE STRAND DNA (54-MER) / type: dna / ID: 7 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 16.759771 KDa
SequenceString: (DC)(DG)(DC)(DC)(DG)(DC)(DA)(DA)(DA)(DC) (DA)(DA)(DG)(DT)(DT)(DG)(DT)(DA)(DG)(DA) (DG)(DC)(DT)(DT)(DA)(DT)(DC)(DG)(DG) (DC)(DA)(DA)(DG)(DG)(DA)(DG)(DG)(DA)(DA) (DG) (DG)(DA)(DA)(DA)(DC)(DT) ...String:
(DC)(DG)(DC)(DC)(DG)(DC)(DA)(DA)(DA)(DC) (DA)(DA)(DG)(DT)(DT)(DG)(DT)(DA)(DG)(DA) (DG)(DC)(DT)(DT)(DA)(DT)(DC)(DG)(DG) (DC)(DA)(DA)(DG)(DG)(DA)(DG)(DG)(DA)(DA) (DG) (DG)(DA)(DA)(DA)(DC)(DT)(DT)(DT) (DA)(DT)(DT)(DG)(DC)(DT)

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Macromolecule #8: Nascent RNA

MacromoleculeName: Nascent RNA / type: rna / ID: 8 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 1.078596 KDa
SequenceString:
(ATP)AC

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Macromolecule #9: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 9 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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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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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.45 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
20.0 mMTris2-Amino-2-hydroxymethyl-1,3-propanediol
50.0 mMNaClsodium chloride
5.0 mMMgCl2magnesium chloride
GridModel: Quantifoil R2/2 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 120 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR / Details: 15mA
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV / Details: blot for 3 seconds before plunging.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 77.0 K / Max: 77.0 K
DetailsDirect alignments: Beam tilt pivot points, Beam shift, Comma Free. C2 aperture centering, C2 lens astigmatism correction. Objective aperture centering and objective lens astigmatism correction.
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 4215 / Average exposure time: 30.0 sec. / Average electron dose: 30.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 1.6 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: 1067697
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.91 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cisTEM / Number images used: 33687
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE

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