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Yorodumi- EMDB-9041: Mycobacterium tuberculosis RNAP promoter unwinding intermediate c... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-9041 | |||||||||
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| Title | Mycobacterium tuberculosis RNAP promoter unwinding intermediate complex with RbpA/CarD and AP3 promoter captured by Corallopyronin | |||||||||
Map data | primary map | |||||||||
Sample |
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Keywords | initiation / transcription bubble / closed clamp / open promoter complex / TRANSCRIPTION / TRANSCRIPTION-DNA complex | |||||||||
| Function / homology | Function and homology informationresponse to water / bacterial-type RNA polymerase holo enzyme binding / Antimicrobial action and antimicrobial resistance in Mtb / sigma factor activity / rRNA transcription / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation ...response to water / bacterial-type RNA polymerase holo enzyme binding / Antimicrobial action and antimicrobial resistance in Mtb / sigma factor activity / rRNA transcription / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / nucleic acid binding / protein dimerization activity / response to antibiotic / DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.55 Å | |||||||||
Authors | Darst SA / Campbell EA | |||||||||
Citation | Journal: Nature / Year: 2019Title: Structures of an RNA polymerase promoter melting intermediate elucidate DNA unwinding. Authors: Hande Boyaci / James Chen / Rolf Jansen / Seth A Darst / Elizabeth A Campbell / ![]() Abstract: A key regulated step of transcription is promoter melting by RNA polymerase (RNAP) to form the open promoter complex. To generate the open complex, the conserved catalytic core of the RNAP combines ...A key regulated step of transcription is promoter melting by RNA polymerase (RNAP) to form the open promoter complex. To generate the open complex, the conserved catalytic core of the RNAP combines with initiation factors to locate promoter DNA, unwind 12-14 base pairs of the DNA duplex and load the template-strand DNA into the RNAP active site. Formation of the open complex is a multi-step process during which transient intermediates of unknown structure are formed. Here we present cryo-electron microscopy structures of bacterial RNAP-promoter DNA complexes, including structures of partially melted intermediates. The structures show that late steps of promoter melting occur within the RNAP cleft, delineate key roles for fork-loop 2 and switch 2-universal structural features of RNAP-in restricting access of DNA to the RNAP active site, and explain why clamp opening is required to allow entry of single-stranded template DNA into the active site. The key roles of fork-loop 2 and switch 2 suggest a common mechanism for late steps in promoter DNA opening to enable gene expression across all domains of life. | |||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_9041.map.gz | 55.9 MB | EMDB map data format | |
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| Header (meta data) | emd-9041-v30.xml emd-9041.xml | 27.3 KB 27.3 KB | Display Display | EMDB header |
| Images | emd_9041.png | 209.2 KB | ||
| Filedesc metadata | emd-9041.cif.gz | 9.5 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-9041 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-9041 | HTTPS FTP |
-Validation report
| Summary document | emd_9041_validation.pdf.gz | 547.6 KB | Display | EMDB validaton report |
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| Full document | emd_9041_full_validation.pdf.gz | 547.1 KB | Display | |
| Data in XML | emd_9041_validation.xml.gz | 6 KB | Display | |
| Data in CIF | emd_9041_validation.cif.gz | 6.9 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9041 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9041 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6eecMC ![]() 9037C ![]() 9039C ![]() 9047C ![]() 6edtC ![]() 6ee8C ![]() 6m7jC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | |
| EM raw data | EMPIAR-10897 (Title: CryoEM of Mycobacterium tuberculosis WT RNAP holoenzyme/RbpA bound to an inhibitor corallopyronin and us-fork DNAData size: 2.3 TB Data #1: Unaligned multi-frame micrographs of M.tuberculosis RNAP holoenzyme with RbpA and us-fork DNA [micrographs - multiframe] Data #2: Unaligned multi-frame micrographs of M.tuberculosis RNAP holoenzyme with RbpA and us-fork DNA [micrographs - multiframe]) EMPIAR-10899 (Title: CryoEM of Mycobacterium tuberculosis WT RNAP holoenzyme/RbpA bound to an inhibitor corallopyronin and de novo melted AP3 promoter DNAData size: 1.8 TB Data #1: Unaligned multi frame micrographs of M. tuberculosis RNAP/RbpA holoenzyme with CarD and Cor and AP3 promoter DNA [micrographs - multiframe] Data #2: Unaligned multi frame micrographs of M. tuberculosis RNAP/RbpA holoenzyme with CarD and Cor and AP3 promoter DNA [micrographs - multiframe]) |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_9041.map.gz / Format: CCP4 / Size: 59.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | primary map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.3 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Mycobacterium tuberculosis RNAP open promoter complex
+Supramolecule #1: Mycobacterium tuberculosis RNAP open promoter complex
+Macromolecule #1: DNA-directed RNA polymerase subunit alpha
+Macromolecule #2: DNA-directed RNA polymerase subunit beta
+Macromolecule #3: DNA-directed RNA polymerase subunit beta'
+Macromolecule #4: DNA-directed RNA polymerase subunit omega
+Macromolecule #5: RNA polymerase sigma factor SigA
+Macromolecule #6: RNA polymerase-binding protein RbpA
+Macromolecule #9: RNA polymerase-binding transcription factor CarD
+Macromolecule #7: DNA (65-MER)
+Macromolecule #8: DNA (63-MER)
+Macromolecule #10: methyl [(1E,5R)-5-{(3E)-3-[(2E,4E,8R,9E,12E)-1,8-dihydroxy-2,5,9-...
+Macromolecule #11: ZINC ION
+Macromolecule #12: MAGNESIUM ION
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 8 |
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| Grid | Details: unspecified |
| 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) / Average electron dose: 69.9 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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