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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-22044 | |||||||||
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| Title | Mfd-bound E.coli RNA polymerase elongation complex - IV state | |||||||||
Map data | main cryo-EM map, sharpened | |||||||||
Sample |
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Keywords | Transcription-coupled DNA repair / DNA translocase / elongation complex / RNA polymerase / TRANSCRIPTION / TRANSCRIPTION-RNA-DNA complex | |||||||||
| Function / homology | Function and homology informationtranscription-coupled nucleotide-excision repair, DNA damage recognition / RNA polymerase core enzyme binding / nucleotide-excision repair, preincision complex assembly / DNA translocase activity / DNA repair complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly ...transcription-coupled nucleotide-excision repair, DNA damage recognition / RNA polymerase core enzyme binding / nucleotide-excision repair, preincision complex assembly / DNA translocase activity / DNA repair complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / 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 / transcription-coupled nucleotide-excision repair / DNA-directed RNA polymerase complex / DNA helicase activity / regulation of DNA-templated transcription elongation / transcription elongation factor complex / transcription antitermination / cell motility / DNA-templated transcription initiation / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / response to heat / protein-containing complex assembly / damaged DNA binding / intracellular iron ion homeostasis / hydrolase activity / protein dimerization activity / response to antibiotic / DNA repair / DNA-templated transcription / DNA damage response / regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / ATP binding / membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
Authors | Llewellyn E / Chen J | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Elife / Year: 2021Title: Structural basis for transcription complex disruption by the Mfd translocase. Authors: Jin Young Kang / Eliza Llewellyn / James Chen / Paul Dominic B Olinares / Joshua Brewer / Brian T Chait / Elizabeth A Campbell / Seth A Darst / ![]() Abstract: Transcription-coupled repair (TCR) is a sub-pathway of nucleotide excision repair (NER) that preferentially removes lesions from the template-strand (t-strand) that stall RNA polymerase (RNAP) ...Transcription-coupled repair (TCR) is a sub-pathway of nucleotide excision repair (NER) that preferentially removes lesions from the template-strand (t-strand) that stall RNA polymerase (RNAP) elongation complexes (ECs). Mfd mediates TCR in bacteria by removing the stalled RNAP concealing the lesion and recruiting Uvr(A)BC. We used cryo-electron microscopy to visualize Mfd engaging with a stalled EC and attempting to dislodge the RNAP. We visualized seven distinct Mfd-EC complexes in both ATP and ADP-bound states. The structures explain how Mfd is remodeled from its repressed conformation, how the UvrA-interacting surface of Mfd is hidden during most of the remodeling process to prevent premature engagement with the NER pathway, how Mfd alters the RNAP conformation to facilitate disassembly, and how Mfd forms a processive translocation complex after dislodging the RNAP. Our results reveal an elaborate mechanism for how Mfd kinetically discriminates paused from stalled ECs and disassembles stalled ECs to initiate TCR. | |||||||||
| History |
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Structure visualization
| Movie |
Movie viewer |
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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_22044.map.gz | 96.5 MB | EMDB map data format | |
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| Header (meta data) | emd-22044-v30.xml emd-22044.xml | 27.2 KB 27.2 KB | Display Display | EMDB header |
| Images | emd_22044.png | 150.7 KB | ||
| Filedesc metadata | emd-22044.cif.gz | 9.7 KB | ||
| Others | emd_22044_additional_1.map.gz | 4.9 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-22044 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-22044 | HTTPS FTP |
-Validation report
| Summary document | emd_22044_validation.pdf.gz | 573.9 KB | Display | EMDB validaton report |
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| Full document | emd_22044_full_validation.pdf.gz | 573.5 KB | Display | |
| Data in XML | emd_22044_validation.xml.gz | 6.5 KB | Display | |
| Data in CIF | emd_22044_validation.cif.gz | 7.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22044 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22044 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6x4yMC ![]() 6x26C ![]() 6x2fC ![]() 6x2nC ![]() 6x43C ![]() 6x4wC ![]() 6x50C C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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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_22044.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | main cryo-EM map, sharpened | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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
-Additional map: cryo-EM map, local resolution filtered
| File | emd_22044_additional_1.map | ||||||||||||
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| Annotation | cryo-EM map, local resolution filtered | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : Escherichia coli Mfd-RNA polymerase elongation complex: state IV
+Supramolecule #1: Escherichia coli Mfd-RNA polymerase elongation complex: state IV
+Macromolecule #1: Transcription-repair-coupling factor
+Macromolecule #2: DNA-directed RNA polymerase subunit alpha
+Macromolecule #3: DNA-directed RNA polymerase subunit beta
+Macromolecule #4: DNA-directed RNA polymerase subunit beta'
+Macromolecule #5: DNA-directed RNA polymerase subunit omega
+Macromolecule #6: RNA (20-mer)
+Macromolecule #7: DNA (64-MER)
+Macromolecule #8: DNA (64-MER)
+Macromolecule #9: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: ZINC 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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| 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: 60.0 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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About Yorodumi



Keywords
Authors
United States, 1 items
Citation
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