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- EMDB-20287: The E. coli class-II CAP-dependent transcription activation compl... -

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Basic information

Entry
Database: EMDB / ID: EMD-20287
TitleThe E. coli class-II CAP-dependent transcription activation complex at the state 1 architecture
Map dataclassII CAP-TAC at state 1, image shown at 3.5 RMS
Sample
  • Complex: The E coli class-II CAP-dependent transcription activation complex at the state 1
    • Protein or peptide: x 6 types
    • DNA: x 2 types
  • Ligand: x 3 types
Keywordsclass-II / CAP-dependent / transcription activation complex / TRANSCRIPTION / TRANSCRIPTION-DNA complex
Function / homology
Function and homology information


sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / sigma factor activity / bacterial-type flagellum-dependent cell motility / nitrate assimilation ...sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / sigma factor activity / bacterial-type flagellum-dependent cell motility / nitrate assimilation / cAMP binding / transcription elongation factor complex / DNA-directed RNA polymerase complex / regulation of DNA-templated transcription elongation / transcription antitermination / cell motility / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
Transcription regulator HTH, Crp-type, conserved site / Crp-type HTH domain signature. / helix_turn_helix, cAMP Regulatory protein / Crp-type HTH domain profile. / Crp-like helix-turn-helix domain / Crp-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 ...Transcription regulator HTH, Crp-type, conserved site / Crp-type HTH domain signature. / helix_turn_helix, cAMP Regulatory protein / Crp-type HTH domain profile. / Crp-like helix-turn-helix domain / Crp-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 / Cyclic nucleotide-binding domain signature 2. / Cyclic nucleotide-binding domain signature 1. / Sigma-70 factors family signature 1. / Cyclic nucleotide-binding, conserved site / 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 / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain / cAMP/cGMP binding motif profile. / Cyclic nucleotide-binding domain / Cyclic nucleotide-binding domain superfamily / 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 / RmlC-like jelly roll fold / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RNA polymerase Rpb1, clamp domain superfamily / RPB6/omega subunit-like superfamily / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 4 / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 5 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / 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 / 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 DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta / RNA polymerase sigma factor RpoD / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / cAMP-activated global transcriptional regulator CRP
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.52 Å
AuthorsLiu B / Shi W
CitationJournal: PLoS Biol / Year: 2020
Title: Visualization of two architectures in class-II CAP-dependent transcription activation.
Authors: Wei Shi / Yanan Jiang / Yibin Deng / Zigang Dong / Bin Liu /
Abstract: Transcription activation by cyclic AMP (cAMP) receptor protein (CAP) is the classic paradigm of transcription regulation in bacteria. CAP was suggested to activate transcription on class-II promoters ...Transcription activation by cyclic AMP (cAMP) receptor protein (CAP) is the classic paradigm of transcription regulation in bacteria. CAP was suggested to activate transcription on class-II promoters via a recruitment and isomerization mechanism. However, whether and how it modifies RNA polymerase (RNAP) to initiate transcription remains unclear. Here, we report cryo-electron microscopy (cryo-EM) structures of an intact Escherichia coli class-II CAP-dependent transcription activation complex (CAP-TAC) with and without de novo RNA transcript. The structures reveal two distinct architectures of TAC and raise the possibility that CAP binding may induce substantial conformational changes in all the subunits of RNAP and transiently widen the main cleft of RNAP to facilitate DNA promoter entering and formation of the initiation open complex. These structural changes vanish during further RNA transcript synthesis. The observations in this study may reveal a possible on-pathway intermediate and suggest a possibility that CAP activates transcription by inducing intermediate state, in addition to the previously proposed stabilization mechanism.
History
DepositionJun 13, 2019-
Header (metadata) releaseNov 27, 2019-
Map releaseMar 18, 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: 0.7
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6pb5
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_20287.png

Downloads & links

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Map

FileDownload / File: emd_20287.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationclassII CAP-TAC at state 1, image shown at 3.5 RMS
Voxel sizeX=Y=Z: 0.9 Å
Density
Contour LevelBy AUTHOR: 0.4 / Movie #1: 0.7
Minimum - Maximum-1.760926 - 5.7802963
Average (Standard dev.)-0.019955857 (±0.26154977)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 345.59998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.90.90.9
M x/y/z384384384
origin x/y/z0.0000.0000.000
length x/y/z345.600345.600345.600
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS384384384
D min/max/mean-1.7615.780-0.020

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Supplemental data

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Sample components

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Entire : The E coli class-II CAP-dependent transcription activation comple...

EntireName: The E coli class-II CAP-dependent transcription activation complex at the state 1
Components
  • Complex: The E coli class-II CAP-dependent transcription activation complex at the state 1
    • Protein or peptide: DNA-directed RNA polymerase subunit alphaPolymerase
    • Protein or peptide: DNA-directed RNA polymerase subunit betaPolymerase
    • Protein or peptide: DNA-directed RNA polymerase subunit beta'Polymerase
    • Protein or peptide: DNA-directed RNA polymerase subunit omegaPolymerase
    • Protein or peptide: RNA polymerase sigma factor RpoD
    • Protein or peptide: cAMP-activated global transcriptional regulator CRP
    • DNA: SYNTHETIC NONTEMPLATE STRAND DNA (78-MER)
    • DNA: SYNTHETIC TEMPLATE STRAND DNA (78-MER)
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE

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Supramolecule #1: The E coli class-II CAP-dependent transcription activation comple...

SupramoleculeName: The E coli class-II CAP-dependent transcription activation complex at the state 1
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#8
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 550 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 (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 #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 (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 #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 (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 #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 (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 #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 (E. coli)
Molecular weightTheoretical: 72.206266 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MRGSHHHHHH TDQFTMEQNP QSQLKLLVTR GKEQGYLTYA EVNDHLPEDI VDSDQIEDII QMINDMGIQV MEEAPDADDL MLAENTADE DAAEAAAQVL SSVESEIGRT TDPVRMYMRE MGTVELLTRE GEIDIAKRIE DGINQVQCSV AEYPEAITYL L EQYDRVEA ...String:
MRGSHHHHHH TDQFTMEQNP QSQLKLLVTR GKEQGYLTYA EVNDHLPEDI VDSDQIEDII QMINDMGIQV MEEAPDADDL MLAENTADE DAAEAAAQVL SSVESEIGRT TDPVRMYMRE MGTVELLTRE GEIDIAKRIE DGINQVQCSV AEYPEAITYL L EQYDRVEA EEARLSDLIT GFVDPNAEED LAPTATHVGS ELSQEDLDDD EDEDEEDGDD DSADDDNSID PELAREKFAE LR AQYVVTR DTIKAKGRSH ATAQEEILKL SEVFKQFRLV PKQFDYLVNS MRVMMDRVRT QERLIMKLCV EQCKMPKKNF ITL FTGNET SDTWFNAAIA MNKPWSEKLH DVSEEVHRAL QKLQQIEEET GLTIEQVKDI NRRMSIGEAK ARRAKKEMVE ANLR LVISI AKKYTNRGLQ FLDLIQEGNI GLMKAVDKFE YRRGYKFSTY ATWWIRQAIT RSIADQARTI RIPVHMIETI NKLNR ISRQ MLQEMGREPT PEELAERMLM PEDKIRKVLK IAKEPISMET PIGDDEDSHL GDFIEDTTLE LPLDSATTES LRAATH DVL AGLTAREAKV LRMRFGIDMN TDYTLEEVGK QFDVTRERIR QIEAKALRKL RHPSRSEVLR SFLDD

UniProtKB: RNA polymerase sigma factor RpoD

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Macromolecule #6: cAMP-activated global transcriptional regulator CRP

MacromoleculeName: cAMP-activated global transcriptional regulator CRP / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.672439 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MVLGKPQTDP TLEWFLSHCH IHKYPSKSTL IHQGEKAETL YYIVKGSVAV LIKDEEGKEM ILSYLNQGDF IGELGLFEEG QERSAWVRA KTACEVAEIS YKKFRQLIQV NPDILMRLSA QMARRLQVTS EKVGNLAFLD VTGRIAQTLL NLAKQPDAMT H PDGMQIKI ...String:
MVLGKPQTDP TLEWFLSHCH IHKYPSKSTL IHQGEKAETL YYIVKGSVAV LIKDEEGKEM ILSYLNQGDF IGELGLFEEG QERSAWVRA KTACEVAEIS YKKFRQLIQV NPDILMRLSA QMARRLQVTS EKVGNLAFLD VTGRIAQTLL NLAKQPDAMT H PDGMQIKI TRQEIGQIVG CSRETVGRIL KMLEDQNLIS AHGKTIVVYG TR

UniProtKB: cAMP-activated global transcriptional regulator CRP

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Macromolecule #7: SYNTHETIC NONTEMPLATE STRAND DNA (78-MER)

MacromoleculeName: SYNTHETIC NONTEMPLATE STRAND DNA (78-MER) / type: dna / ID: 7 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 23.976332 KDa
SequenceString: (DC)(DT)(DT)(DT)(DT)(DT)(DT)(DG)(DC)(DC) (DT)(DA)(DA)(DA)(DA)(DT)(DG)(DT)(DG)(DA) (DT)(DC)(DT)(DA)(DG)(DA)(DT)(DC)(DA) (DC)(DA)(DT)(DT)(DT)(DT)(DT)(DC)(DG)(DC) (DA) (DT)(DC)(DT)(DT)(DT)(DT) ...String:
(DC)(DT)(DT)(DT)(DT)(DT)(DT)(DG)(DC)(DC) (DT)(DA)(DA)(DA)(DA)(DT)(DG)(DT)(DG)(DA) (DT)(DC)(DT)(DA)(DG)(DA)(DT)(DC)(DA) (DC)(DA)(DT)(DT)(DT)(DT)(DT)(DC)(DG)(DC) (DA) (DT)(DC)(DT)(DT)(DT)(DT)(DT)(DT) (DA)(DT)(DG)(DC)(DT)(DA)(DT)(DA)(DA)(DT) (DG)(DT) (DG)(DT)(DG)(DC)(DA)(DG)(DT) (DC)(DT)(DG)(DA)(DC)(DG)(DC)(DG)(DG)(DC) (DG)

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Macromolecule #8: SYNTHETIC TEMPLATE STRAND DNA (78-MER)

MacromoleculeName: SYNTHETIC TEMPLATE STRAND DNA (78-MER) / type: dna / ID: 8 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 24.19159 KDa
SequenceString: (DC)(DG)(DC)(DC)(DG)(DC)(DG)(DT)(DC)(DA) (DG)(DA)(DC)(DT)(DC)(DG)(DT)(DA)(DG)(DG) (DA)(DT)(DT)(DA)(DT)(DA)(DG)(DC)(DA) (DT)(DA)(DA)(DA)(DA)(DA)(DA)(DG)(DA)(DT) (DG) (DC)(DG)(DA)(DA)(DA)(DA) ...String:
(DC)(DG)(DC)(DC)(DG)(DC)(DG)(DT)(DC)(DA) (DG)(DA)(DC)(DT)(DC)(DG)(DT)(DA)(DG)(DG) (DA)(DT)(DT)(DA)(DT)(DA)(DG)(DC)(DA) (DT)(DA)(DA)(DA)(DA)(DA)(DA)(DG)(DA)(DT) (DG) (DC)(DG)(DA)(DA)(DA)(DA)(DA)(DT) (DG)(DT)(DG)(DA)(DT)(DC)(DT)(DA)(DG)(DA) (DT)(DC) (DA)(DC)(DA)(DT)(DT)(DT)(DT) (DA)(DG)(DG)(DC)(DA)(DA)(DA)(DA)(DA)(DA) (DG)

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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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Macromolecule #11: ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE

MacromoleculeName: ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE / type: ligand / ID: 11 / Number of copies: 2 / Formula: CMP
Molecular weightTheoretical: 329.206 Da
Chemical component information

ChemComp-CMP:
ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE / Cyclic adenosine monophosphate

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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

Concentration0.55 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormula
20.0 mMTris
50.0 mMNaClSodium chloride
5.0 mMMgCl2
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 12 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR / Details: 15 mA
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
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 96000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
TemperatureMin: 77.0 K / Max: 77.0 K
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 2819 / Average exposure time: 36.0 sec. / Average electron dose: 36.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.52 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cisTEM / Number images used: 30296

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