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Yorodumi- EMDB-3561: map of the RNA polymerase lambda-based antitermination complex so... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-3561 | |||||||||
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Title | map of the RNA polymerase lambda-based antitermination complex solved by cryo-EM | |||||||||
Map data | ||||||||||
Sample |
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Keywords | TRANSCRIPTION/DNA/RNA / DNA-DEPENDENT RNA POLYMERASE / BACTERIAL TRANSCRIPTION / TERNARY ELONGATION COMPLEX / ANTITERMINATION / TRANSCRIPTION-DNA-RNA complex | |||||||||
Function / homology | Function and homology information RNA polymerase binding / transcription elongation-coupled chromatin remodeling / 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 / protein complex oligomerization / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly ...RNA polymerase binding / transcription elongation-coupled chromatin remodeling / 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 / protein complex oligomerization / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / transcription antitermination factor activity, RNA binding / bacterial-type flagellum-dependent cell motility / nitrate assimilation / transcription elongation factor complex / regulation of DNA-templated transcription elongation / DNA-templated transcription initiation / transcription antitermination / cell motility / DNA-templated transcription termination / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / RNA stem-loop binding / ribosome biogenesis / small ribosomal subunit / response to heat / cytosolic small ribosomal subunit / protein-containing complex assembly / cytoplasmic translation / intracellular iron ion homeostasis / tRNA binding / single-stranded RNA binding / protein dimerization activity / structural constituent of ribosome / DNA-binding transcription factor activity / protein domain specific binding / response to antibiotic / nucleotide binding / regulation of transcription by RNA polymerase II / magnesium ion binding / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Escherichia coli (E. coli) / Escherichia phage lambda (virus) / Escherichia coli K-12 (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 9.8 Å | |||||||||
Authors | Said N / Krupp F | |||||||||
Funding support | Germany, 1 items
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Citation | Journal: Nat Microbiol / Year: 2017 Title: Structural basis for λN-dependent processive transcription antitermination. Authors: Nelly Said / Ferdinand Krupp / Ekaterina Anedchenko / Karine F Santos / Olexandr Dybkov / Yong-Heng Huang / Chung-Tien Lee / Bernhard Loll / Elmar Behrmann / Jörg Bürger / Thorsten Mielke ...Authors: Nelly Said / Ferdinand Krupp / Ekaterina Anedchenko / Karine F Santos / Olexandr Dybkov / Yong-Heng Huang / Chung-Tien Lee / Bernhard Loll / Elmar Behrmann / Jörg Bürger / Thorsten Mielke / Justus Loerke / Henning Urlaub / Christian M T Spahn / Gert Weber / Markus C Wahl / Abstract: λN-mediated processive antitermination constitutes a paradigmatic transcription regulatory event, during which phage protein λN, host factors NusA, NusB, NusE and NusG, and an RNA nut site render ...λN-mediated processive antitermination constitutes a paradigmatic transcription regulatory event, during which phage protein λN, host factors NusA, NusB, NusE and NusG, and an RNA nut site render elongating RNA polymerase termination-resistant. The structural basis of the process has so far remained elusive. Here we describe a crystal structure of a λN-NusA-NusB-NusE-nut site complex and an electron cryo-microscopic structure of a complete transcription antitermination complex, comprising RNA polymerase, DNA, nut site RNA, all Nus factors and λN, validated by crosslinking/mass spectrometry. Due to intrinsic disorder, λN can act as a multiprotein/RNA interaction hub, which, together with nut site RNA, arranges NusA, NusB and NusE into a triangular complex. This complex docks via the NusA N-terminal domain and the λN C-terminus next to the RNA exit channel on RNA polymerase. Based on the structures, comparative crosslinking analyses and structure-guided mutagenesis, we hypothesize that λN mounts a multipronged strategy to reprogram the transcriptional machinery, which may include (1) the λN C terminus clamping the RNA exit channel, thus stabilizing the DNA:RNA hybrid; (2) repositioning of NusA and RNAP elements, thus redirecting nascent RNA and sequestering the upstream branch of a terminator hairpin; and (3) hindering RNA engagement of termination factor ρ and/or obstructing ρ translocation on the transcript. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_3561.map.gz | 48.4 MB | EMDB map data format | |
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Header (meta data) | emd-3561-v30.xml emd-3561.xml | 26.2 KB 26.2 KB | Display Display | EMDB header |
Images | emd_3561.png | 137.3 KB | ||
Filedesc metadata | emd-3561.cif.gz | 9 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-3561 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-3561 | HTTPS FTP |
-Validation report
Summary document | emd_3561_validation.pdf.gz | 209.5 KB | Display | EMDB validaton report |
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Full document | emd_3561_full_validation.pdf.gz | 208.6 KB | Display | |
Data in XML | emd_3561_validation.xml.gz | 6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3561 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3561 | HTTPS FTP |
-Related structure data
Related structure data | 5ms0MC 5lm7C 5lm9C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_3561.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.28 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : lambdaN-dependent antitermination complex
+Supramolecule #1: lambdaN-dependent antitermination complex
+Macromolecule #1: Antitermination protein N
+Macromolecule #3: DNA-directed RNA polymerase subunit alpha
+Macromolecule #4: DNA-directed RNA polymerase subunit beta
+Macromolecule #5: DNA-directed RNA polymerase subunit beta'
+Macromolecule #6: 30S ribosomal protein S10
+Macromolecule #7: Transcription termination/antitermination protein NusG
+Macromolecule #11: Transcription antitermination protein NusB
+Macromolecule #12: Transcription termination/antitermination protein NusA
+Macromolecule #13: DNA-directed RNA polymerase subunit omega
+Macromolecule #2: nascent RNA
+Macromolecule #8: RNA transcription bubble
+Macromolecule #9: DNAI
+Macromolecule #10: DNAII
+Macromolecule #14: MAGNESIUM ION
+Macromolecule #15: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
Details | 10 mM HEPES-NaOH, pH 7.5, 50 mM NaCl, 1 mM DTT |
-Electron microscopy
Microscope | FEI POLARA 300 |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 1.0 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: Tecnai Polara / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: INSILICO MODEL Details: Generate from class averages using the VIPER algorithm. |
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Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 9.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 23983 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |