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- EMDB-0874: The cryo-EM structure of E. coli CueR transcription activation complex -

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Basic information

Entry
Database: EMDB / ID: EMD-0874
TitleThe cryo-EM structure of E. coli CueR transcription activation complex
Map data
Sample
  • Complex: Escherichia coli CueR transcription activation complex
    • Protein or peptide: x 6 types
    • DNA: x 2 types
    • RNA: x 1 types
  • Ligand: x 3 types
KeywordsRNA polymerase / CueR / transcription activation / TRANSCRIPTION / TRANSCRIPTION (DNA to RNA)
Function / homology
Function and homology information


sigma factor antagonist complex / DNA-binding transcription activator activity / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly ...sigma factor antagonist complex / DNA-binding transcription activator activity / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / cis-regulatory region sequence-specific DNA binding / nitrate assimilation / transcription elongation factor complex / regulation of DNA-templated transcription elongation / DNA-templated transcription initiation / protein-DNA complex / transcription antitermination / cell motility / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / transcription cis-regulatory region binding / protein dimerization activity / copper ion binding / DNA-binding transcription factor activity / response to antibiotic / negative regulation of DNA-templated transcription / DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / identical protein binding / membrane / cytosol / cytoplasm
Similarity search - Function
Cu(I)-responsive transcriptional regulator / MerR-type HTH domain signature. / : / MerR HTH family regulatory protein / helix_turn_helix, mercury resistance / MerR-type HTH domain profile. / MerR-type HTH domain / RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 ...Cu(I)-responsive transcriptional regulator / MerR-type HTH domain signature. / : / MerR HTH family regulatory protein / helix_turn_helix, mercury resistance / MerR-type HTH domain profile. / MerR-type HTH domain / RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 / Sigma-70 factor, region 1.1 superfamily / Sigma-70 factor, region 1.1 / Putative DNA-binding domain superfamily / Sigma-70 factors family signature 1. / RNA polymerase sigma factor RpoD, C-terminal / RNA polymerase sigma factor RpoD / : / RNA polymerase sigma-70 region 1.2 / Sigma-70 factor, region 1.2 / 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 / RNA polymerase Rpb6 / 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 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 / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
RNA polymerase sigma factor RpoD / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta / HTH-type transcriptional regulator CueR
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria) / Escherichia coli (strain K12) (bacteria) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.69 Å
AuthorsFang CL / Zhang Y
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China31822001 China
CitationJournal: Nat Chem Biol / Year: 2021
Title: CueR activates transcription through a DNA distortion mechanism.
Authors: Chengli Fang / Steven J Philips / Xiaoxian Wu / Kui Chen / Jing Shi / Liqiang Shen / Juncao Xu / Yu Feng / Thomas V O'Halloran / Yu Zhang /
Abstract: The MerR-family transcription factors (TFs) are a large group of bacterial proteins responding to cellular metal ions and multiple antibiotics by binding within central RNA polymerase-binding regions ...The MerR-family transcription factors (TFs) are a large group of bacterial proteins responding to cellular metal ions and multiple antibiotics by binding within central RNA polymerase-binding regions of a promoter. While most TFs alter transcription through protein-protein interactions, MerR TFs are capable of reshaping promoter DNA. To address the question of which mechanism prevails, we determined two cryo-EM structures of transcription activation complexes (TAC) comprising Escherichia coli CueR (a prototype MerR TF), RNAP holoenzyme and promoter DNA. The structures reveal that this TF promotes productive promoter-polymerase association without canonical protein-protein contacts seen between other activator proteins and RNAP. Instead, CueR realigns the key promoter elements in the transcription activation complex by clamp-like protein-DNA interactions: these induce four distinct kinks that ultimately position the -10 element for formation of the transcription bubble. These structural and biochemical results provide strong support for the DNA distortion paradigm of allosteric transcriptional control by MerR TFs.
History
DepositionNov 21, 2019-
Header (metadata) releaseSep 30, 2020-
Map releaseSep 30, 2020-
UpdateMar 27, 2024-
Current statusMar 27, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.02
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  • Surface view with fitted model
  • Atomic models: PDB-6ldi
  • Surface level: 0.02
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0874.png

Downloads & links

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Map

FileDownload / File: emd_0874.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.)
1.31 Å/pix.
x 300 pix.
= 392.1 Å		1.31 Å/pix.
x 300 pix.
= 392.1 Å		1.31 Å/pix.
x 300 pix.
= 392.1 Å

Surface

Projections

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.307 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02 / Movie #1: 0.02
Minimum - Maximum-0.06349809 - 0.12396796
Average (Standard dev.)0.00017569494 (±0.0027082074)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 392.1 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.3071.3071.307
M x/y/z300300300
origin x/y/z0.0000.0000.000
length x/y/z392.100392.100392.100
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS300300300
D min/max/mean-0.0630.1240.000

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Supplemental data

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Mask #1

Fileemd_0874_msk_1.map
Projections & Slices
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Half map: #1

Fileemd_0874_half_map_1.map
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Half map: #2

Fileemd_0874_half_map_2.map
Projections & Slices
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Sample components

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Entire : Escherichia coli CueR transcription activation complex

EntireName: Escherichia coli CueR transcription activation complex
Components
  • Complex: Escherichia coli CueR transcription activation 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
    • Protein or peptide: RNA polymerase sigma factor RpoD
    • DNA: DNA (50-MER)
    • DNA: DNA (50-MER)
    • RNA: RNA (5'-R(*CP*UP*CP*GP*A)-3')
    • Protein or peptide: HTH-type transcriptional regulator CueR
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: SILVER ION

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Supramolecule #1: Escherichia coli CueR transcription activation complex

SupramoleculeName: Escherichia coli CueR transcription activation complex
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#9
Source (natural)Organism: Escherichia coli K-12 (bacteria)
Molecular weightTheoretical: 507 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 (strain K12) (bacteria) / Strain: K12
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 (strain K12) (bacteria) / Strain: K12
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 (strain K12) (bacteria) / Strain: K12
Molecular weightTheoretical: 156.537031 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 SDNELEVHHH HHH

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 (strain K12) (bacteria) / Strain: K12
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 RpoD

MacromoleculeName: RNA polymerase sigma factor RpoD / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (strain K12) (bacteria) / Strain: K12
Molecular weightTheoretical: 72.523633 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MGSSHHHHHH SSGLVPRGSH MEQNPQSQLK LLVTRGKEQG YLTYAEVNDH LPEDIVDSDQ IEDIIQMIND MGIQVMEEAP DADDLMLAE NTADEDAAEA AAQVLSSVES EIGRTTDPVR MYMREMGTVE LLTREGEIDI AKRIEDGINQ VQCSVAEYPE A ITYLLEQY ...String:
MGSSHHHHHH SSGLVPRGSH MEQNPQSQLK LLVTRGKEQG YLTYAEVNDH LPEDIVDSDQ IEDIIQMIND MGIQVMEEAP DADDLMLAE NTADEDAAEA AAQVLSSVES EIGRTTDPVR MYMREMGTVE LLTREGEIDI AKRIEDGINQ VQCSVAEYPE A ITYLLEQY DRVEAEEARL SDLITGFVDP NAEEDLAPTA THVGSELSQE DLDDDEDEDE EDGDDDSADD DNSIDPELAR EK FAELRAQ YVVTRDTIKA KGRSHATAQE EILKLSEVFK QFRLVPKQFD YLVNSMRVMM DRVRTQERLI MKLCVEQCKM PKK NFITLF TGNETSDTWF NAAIAMNKPW SEKLHDVSEE VHRALQKLQQ IEEETGLTIE QVKDINRRMS IGEAKARRAK KEMV EANLR LVISIAKKYT NRGLQFLDLI QEGNIGLMKA VDKFEYRRGY KFSTYATWWI RQAITRSIAD QARTIRIPVH MIETI NKLN RISRQMLQEM GREPTPEELA ERMLMPEDKI RKVLKIAKEP ISMETPIGDD EDSHLGDFIE DTTLELPLDS ATTESL RAA THDVLAGLTA REAKVLRMRF GIDMNTDYTL EEVGKQFDVT RERIRQIEAK ALRKLRHPSR SEVLRSFLDD

UniProtKB: RNA polymerase sigma factor RpoD

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Macromolecule #9: HTH-type transcriptional regulator CueR

MacromoleculeName: HTH-type transcriptional regulator CueR / type: protein_or_peptide / ID: 9 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (strain K12) (bacteria) / Strain: K12
Molecular weightTheoretical: 15.58657 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GAMAMNISDV AKITGLTSKA IRFYEEKGLV TPPMRSENGY RTYTQQHLNE LTLLRQARQV GFNLEESGEL VNLFNDPQRH SADVKRRTL EKVAEIERHI EELQSMRDQL LALANACPGD DSADCPIIEN LSGCCHHRAG

UniProtKB: HTH-type transcriptional regulator CueR

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Macromolecule #6: DNA (50-MER)

MacromoleculeName: DNA (50-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 15.415855 KDa
SequenceString:
(DC)(DT)(DT)(DG)(DA)(DC)(DC)(DT)(DT)(DC) (DC)(DC)(DC)(DT)(DT)(DG)(DC)(DT)(DG)(DG) (DA)(DA)(DG)(DG)(DT)(DT)(DT)(DA)(DT) (DA)(DA)(DT)(DG)(DG)(DG)(DA)(DG)(DC)(DT) (DG) (DT)(DC)(DA)(DC)(DG)(DG)(DA)(DT) (DG)(DC)

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Macromolecule #7: DNA (50-MER)

MacromoleculeName: DNA (50-MER) / type: dna / ID: 7 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 15.559003 KDa
SequenceString:
(DG)(DC)(DA)(DT)(DC)(DC)(DG)(DT)(DG)(DA) (DG)(DT)(DC)(DG)(DA)(DG)(DG)(DG)(DT)(DA) (DA)(DT)(DA)(DA)(DA)(DA)(DC)(DC)(DT) (DT)(DC)(DC)(DA)(DG)(DC)(DA)(DA)(DG)(DG) (DG) (DG)(DA)(DA)(DG)(DG)(DT)(DC)(DA) (DA)(DG)

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Macromolecule #8: RNA (5'-R(*CP*UP*CP*GP*A)-3')

MacromoleculeName: RNA (5'-R(*CP*UP*CP*GP*A)-3') / type: rna / ID: 8 / Number of copies: 1
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 1.545984 KDa
SequenceString:
CUCGA

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Macromolecule #10: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 10 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #11: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 11 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #12: SILVER ION

MacromoleculeName: SILVER ION / type: ligand / ID: 12 / Number of copies: 1 / Formula: AG
Molecular weightTheoretical: 107.868 Da
Chemical component information

ChemComp-AG:
SILVER ION

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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

Concentration15 mg/mL
BufferpH: 8
Component:
ConcentrationFormulaName
10.0 mmol/LC8H18N2O4SHEPES
50.0 mmol/LKClPotassium Chloride
5.0 mmol/LMgCl2Magnesium chloride
3.0 mmol/LC4H10O2S2DL-Dithiothreitol
GridModel: C-flat-1.2/1.3 4C / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 120 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 120 sec. / Pretreatment - Atmosphere: OTHER
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 282.65 K / Instrument: FEI VITROBOT MARK III

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 2278 / Average exposure time: 12.0 sec. / Average electron dose: 56.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 617318
Startup modelType of model: EMDB MAP
EMDB ID:

9792

Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.69 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 184524
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final 3D classificationNumber classes: 4 / Software - Name: RELION (ver. 3.0)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial model
PDB IDChain

6b6h

source_name: PDB, initial_model_type: experimental model

4wls

source_name: PDB, initial_model_type: experimental model
RefinementProtocol: RIGID BODY FIT
Output model

PDB-6ldi:
The cryo-EM structure of E. coli CueR transcription activation complex

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