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- EMDB-13829: Cryo-EM structure of Mycobacterium tuberculosis RNA polymerase ho... -
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Open data
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Basic information
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Title | Cryo-EM structure of Mycobacterium tuberculosis RNA polymerase holoenzyme dimer comprising sigma factor SigB | |||||||||
![]() | primary map | |||||||||
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![]() | DNA-dependent RNA polymerase / alternative sigma / TRANSCRIPTION | |||||||||
Function / homology | ![]() RNA polymerase core enzyme binding / Antimicrobial action and antimicrobial resistance in Mtb / sigma factor activity / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat ...RNA polymerase core enzyme binding / Antimicrobial action and antimicrobial resistance in Mtb / sigma factor activity / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / response to hypoxia / protein dimerization activity / response to xenobiotic stimulus / response to antibiotic / DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.36 Å | |||||||||
![]() | Brodolin K | |||||||||
Funding support | ![]()
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![]() | Journal: Nucleic Acids Res / Year: 2014 Title: Mycobacterium RbpA cooperates with the stress-response σB subunit of RNA polymerase in promoter DNA unwinding. Authors: Yangbo Hu / Zakia Morichaud / Ayyappasamy Sudalaiyadum Perumal / Françoise Roquet-Baneres / Konstantin Brodolin / ![]() Abstract: RbpA, a transcriptional activator that is essential for Mycobacterium tuberculosis replication and survival during antibiotic treatment, binds to RNA polymerase (RNAP) in the absence of promoter DNA. ...RbpA, a transcriptional activator that is essential for Mycobacterium tuberculosis replication and survival during antibiotic treatment, binds to RNA polymerase (RNAP) in the absence of promoter DNA. It has been hypothesized that RbpA stimulates housekeeping gene expression by promoting assembly of the σ(A) subunit with core RNAP. Here, using a purified in vitro transcription system of M. tuberculosis, we show that RbpA functions in a promoter-dependent manner as a companion of RNAP essential for promoter DNA unwinding and formation of the catalytically active open promoter complex (RPo). Screening for RbpA activity using a full panel of the M. tuberculosis σ subunits demonstrated that RbpA targets σ(A) and stress-response σ(B), but not the alternative σ subunits from the groups 3 and 4. In contrast to σ(A), the σ(B) subunit activity displayed stringent dependency upon RbpA. These results suggest that RbpA-dependent control of RPo formation provides a mechanism for tuning gene expression during the switch between different physiological states, and in the stress response. #1: ![]() Title: Structural basis of the mycobacterial stress-response RNA polymerase auto-inhibition via oligomerization Authors: Morichaud Z / Trapani S / Vishwakarma R / Chaloin L / Lionne C / Lai-Kee-Him J / Bron P / Brodolin K | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 327.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 24.8 KB 24.8 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 15.7 KB | Display | ![]() |
Images | ![]() | 118.6 KB | ||
Masks | ![]() | 347.6 MB | ![]() | |
Filedesc metadata | ![]() | 8.5 KB | ||
Others | ![]() | 154.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7q59MC ![]() 7pp4C ![]() 7q4uC ![]() 7z8qC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | primary map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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-Additional map: raw map
File | emd_13829_additional_1.map | ||||||||||||
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Annotation | raw map | ||||||||||||
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Density Histograms |
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Sample components
-Entire : RNA polymerase holoenzyme with sigma factor sigB
Entire | Name: RNA polymerase holoenzyme with sigma factor sigB |
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Components |
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-Supramolecule #1: RNA polymerase holoenzyme with sigma factor sigB
Supramolecule | Name: RNA polymerase holoenzyme with sigma factor sigB / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 Details: RNA polymerase holoenzyme assembled from individually expressed RNA polymerase core and sigma factor sigB |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 800 KDa |
-Macromolecule #1: DNA-directed RNA polymerase subunit alpha
Macromolecule | Name: DNA-directed RNA polymerase subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 37.745328 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MLISQRPTLS EDVLTDNRSQ FVIEPLEPGF GYTLGNSLRR TLLSSIPGAA VTSIRIDGVL HEFTTVPGVK EDVTEIILNL KSLVVSSEE DEPVTMYLRK QGPGEVTAGD IVPPAGVTVH NPGMHIATLN DKGKLEVELV VERGRGYVPA VQNRASGAEI G RIPVDSIY ...String: MLISQRPTLS EDVLTDNRSQ FVIEPLEPGF GYTLGNSLRR TLLSSIPGAA VTSIRIDGVL HEFTTVPGVK EDVTEIILNL KSLVVSSEE DEPVTMYLRK QGPGEVTAGD IVPPAGVTVH NPGMHIATLN DKGKLEVELV VERGRGYVPA VQNRASGAEI G RIPVDSIY SPVLKVTYKV DATRVEQRTD FDKLILDVET KNSISPRDAL ASAGKTLVEL FGLARELNVE AEGIEIGPSP AE ADHIASF ALPIDDLDLT VRSYNCLKRE GVHTVGELVA RTESDLLDIR NFGQKSIDEV KIKLHQLGLS LKDSPPSFDP SEV AGYDVA TGTWSTEGAY DEQDYAETEQ L UniProtKB: DNA-directed RNA polymerase subunit alpha |
-Macromolecule #2: DNA-directed RNA polymerase subunit beta
Macromolecule | Name: DNA-directed RNA polymerase subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 129.602344 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MVLADSRQSK TAASPSPSRP QSSSNNSVPG APNRVSFAKL REPLEVPGLL DVQTDSFEWL IGSPRWRESA AERGDVNPVG GLEEVLYEL SPIEDFSGSM SLSFSDPRFD DVKAPVDECK DKDMTYAAPL FVTAEFINNN TGEIKSQTVF MGDFPMMTEK G TFIINGTE ...String: MVLADSRQSK TAASPSPSRP QSSSNNSVPG APNRVSFAKL REPLEVPGLL DVQTDSFEWL IGSPRWRESA AERGDVNPVG GLEEVLYEL SPIEDFSGSM SLSFSDPRFD DVKAPVDECK DKDMTYAAPL FVTAEFINNN TGEIKSQTVF MGDFPMMTEK G TFIINGTE RVVVSQLVRS PGVYFDETID KSTDKTLHSV KVIPSRGAWL EFDVDKRDTV GVRIDRKRRQ PVTVLLKALG WT SEQIVER FGFSEIMRST LEKDNTVGTD EALLDIYRKL RPGEPPTKES AQTLLENLFF KEKRYDLARV GRYKVNKKLG LHV GEPITS STLTEEDVVA TIEYLVRLHE GQTTMTVPGG VEVPVETDDI DHFGNRRLRT VGELIQNQIR VGMSRMERVV RERM TTQDV EAITPQTLIN IRPVVAAIKE FFGTSQLSQF MDQNNPLSGL THKRRLSALG PGGLSRERAG LEVRDVHPSH YGRMC PIET PEGPNIGLIG SLSVYARVNP FGFIETPYRK VVDGVVSDEI VYLTADEEDR HVVAQANSPI DADGRFVEPR VLVRRK AGE VEYVPSSEVD YMDVSPRQMV SVATAMIPFL EHDDANRALM GANMQRQAVP LVRSEAPLVG TGMELRAAID AGDVVVA EE SGVIEEVSAD YITVMHDNGT RRTYRMRKFA RSNHGTCANQ CPIVDAGDRV EAGQVIADGP CTDDGEMALG KNLLVAIM P WEGHNYEDAI ILSNRLVEED VLTSIHIEEH EIDARDTKLG AEEITRDIPN ISDEVLADLD ERGIVRIGAE VRDGDILVG KVTPKGETEL TPEERLLRAI FGEKAREVRD TSLKVPHGES GKVIGIRVFS REDEDELPAG VNELVRVYVA QKRKISDGDK LAGRHGNKG VIGKILPVED MPFLADGTPV DIILNTHGVP RRMNIGQILE THLGWCAHSG WKVDAAKGVP DWAARLPDEL L EAQPNAIV STPVFDGAQE AELQGLLSCT LPNRDGDVLV DADGKAMLFD GRSGEPFPYP VTVGYMYIMK LHHLVDDKIH AR STGPYSM ITQQPLGGKA QFGGQRFGEM ECWAMQAYGA AYTLQELLTI KSDDTVGRVK VYEAIVKGEN IPEPGIPESF KVL LKELQS LCLNVEVLSS DGAAIELREG EDEDLERAAA NLGINLSRNE SASVEDLA UniProtKB: DNA-directed RNA polymerase subunit beta |
-Macromolecule #3: DNA-directed RNA polymerase subunit beta'
Macromolecule | Name: DNA-directed RNA polymerase subunit beta' / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 147.438344 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: VNFFDELRIG LATAEDIRQW SYGEVKKPET INYRTLKPEK DGLFCEKIFG PTRDWECYCG KYKRVRFKGI ICERCGVEVT RAKVRRERM GHIELAAPVT HIWYFKGVPS RLGYLLDLAP KDLEKIIYFA AYVITSVDEE MRHNELSTLE AEMAVERKAV E DQRDGELE ...String: VNFFDELRIG LATAEDIRQW SYGEVKKPET INYRTLKPEK DGLFCEKIFG PTRDWECYCG KYKRVRFKGI ICERCGVEVT RAKVRRERM GHIELAAPVT HIWYFKGVPS RLGYLLDLAP KDLEKIIYFA AYVITSVDEE MRHNELSTLE AEMAVERKAV E DQRDGELE ARAQKLEADL AELEAEGAKA DARRKVRDGG EREMRQIRDR AQRELDRLED IWSTFTKLAP KQLIVDENLY RE LVDRYGE YFTGAMGAES IQKLIENFDI DAEAESLRDV IRNGKGQKKL RALKRLKVVA AFQQSGNSPM GMVLDAVPVI PPE LRPMVQ LDGGRFATSD LNDLYRRVIN RNNRLKRLID LGAPEIIVNN EKRMLQESVD ALFDNGRRGR PVTGPGNRPL KSLS DLLKG KQGRFRQNLL GKRVDYSGRS VIVVGPQLKL HQCGLPKLMA LELFKPFVMK RLVDLNHAQN IKSAKRMVER QRPQV WDVL EEVIAEHPVL LNRAPTLHRL GIQAFEPMLV EGKAIQLHPL VCEAFNADFD GDQMAVHLPL SAEAQAEARI LMLSSN NIL SPASGRPLAM PRLDMVTGLY YLTTEVPGDT GEYQPASGDH PETGVYSSPA EAIMAADRGV LSVRAKIKVR LTQLRPP VE IEAELFGHSG WQPGDAWMAE TTLGRVMFNE LLPLGYPFVN KQMHKKVQAA IINDLAERYP MIVVAQTVDK LKDAGFYW A TRSGVTVSMA DVLVPPRKKE ILDHYEERAD KVEKQFQRGA LNHDERNEAL VEIWKEATDE VGQALREHYP DDNPIITIV DSGATGNFTQ TRTLAGMKGL VTNPKGEFIP RPVKSSFREG LTVLEYFINT HGARKGLADT ALRTADSGYL TRRLVDVSQD VIVREHDCQ TERGIVVELA ERAPDGTLIR DPYIETSAYA RTLGTDAVDE AGNVIVERGQ DLGDPEIDAL LAAGITQVKV R SVLTCATS TGVCATCYGR SMATGKLVDI GEAVGIVAAQ SIGEPGTQLT MRTFHQGGVG EDITGGLPRV QELFEARVPR GK APIADVT GRVRLEDGER FYKITIVPDD GGEEVVYDKI SKRQRLRVFK HEDGSERVLS DGDHVEVGQQ LMEGSADPHE VLR VQGPRE VQIHLVREVQ EVYRAQGVSI HDKHIEVIVR QMLRRVTIID SGSTEFLPGS LIDRAEFEAE NRRVVAEGGE PAAG RPVLM GITKASLATD SWLSAASFQE TTRVLTDAAI NCRSDKLNGL KENVIIGKLI PAGTGINRYR NIAVQPTEEA RAAAY TIPS YEDQYYSPDF GAATGAAVPL DDYGYSDYRH HHHHH UniProtKB: DNA-directed RNA polymerase subunit beta' |
-Macromolecule #4: DNA-directed RNA polymerase subunit omega
Macromolecule | Name: DNA-directed RNA polymerase subunit omega / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA-directed RNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 11.85114 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSISQSDASL AAVPAVDQFD PSSGASGGYD TPLGITNPPI DELLDRVSSK YALVIYAAKR ARQINDYYNQ LGEGILEYVG PLVEPGLQE KPLSIALREI HADLLEHTEG E UniProtKB: DNA-directed RNA polymerase subunit omega |
-Macromolecule #5: RNA polymerase sigma factor SigB
Macromolecule | Name: RNA polymerase sigma factor SigB / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 38.572773 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGSSHHHHHH SSGLVPRGSH MADAPTRATT SRVDSDLDAQ SPAADLVRVY LNGIGKTALL NAAGEVELAK RIEAGLYAEH LLETRKRLG ENRKRDLAAV VRDGEAARRH LLEANLRLVV SLAKRYTGRG MPLLDLIQEG NLGLIRAMEK FDYTKGFKFS T YATWWIRQ ...String: MGSSHHHHHH SSGLVPRGSH MADAPTRATT SRVDSDLDAQ SPAADLVRVY LNGIGKTALL NAAGEVELAK RIEAGLYAEH LLETRKRLG ENRKRDLAAV VRDGEAARRH LLEANLRLVV SLAKRYTGRG MPLLDLIQEG NLGLIRAMEK FDYTKGFKFS T YATWWIRQ AITRGMADQS RTIRLPVHLV EQVNKLARIK REMHQHLGRE ATDEELAAES GIPIDKINDL LEHSRDPVSL DM PVGSEEE APLGDFIEDA EAMSAENAVI AELLHTDIRS VLATLDEREH QVIRLRFGLD DGQPRTLDQI GKLFGLSRER VRQ IERDVM SKLRHGERAD RLRSYAS UniProtKB: RNA polymerase sigma factor SigB |
-Macromolecule #6: ZINC ION
Macromolecule | Name: ZINC ION / type: ligand / ID: 6 / Number of copies: 4 / Formula: ZN |
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Molecular weight | Theoretical: 65.409 Da |
-Macromolecule #7: MAGNESIUM ION
Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 7 / Number of copies: 2 / Formula: MG |
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Molecular weight | Theoretical: 24.305 Da |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 1.4 mg/mL |
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Buffer | pH: 7.9 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Number real images: 3064 / Average electron dose: 49.6 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 7.0 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |