+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11840 | |||||||||
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Title | Schizosaccharomyces pombe RNA polymerase I (monomer) | |||||||||
Map data | ||||||||||
Sample |
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Keywords | TRANSCRIPTION | |||||||||
Function / homology | Function and homology information RNA Polymerase I Transcription Initiation / RNA polymerase II transcribes snRNA genes / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA polymerase II, holoenzyme ...RNA Polymerase I Transcription Initiation / RNA polymerase II transcribes snRNA genes / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA polymerase II, holoenzyme / mRNA Capping / RNA Pol II CTD phosphorylation and interaction with CE / Estrogen-dependent gene expression / Formation of the Early Elongation Complex / RNA Polymerase I Promoter Escape / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / Transcriptional regulation by small RNAs / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / DNA-templated transcription elongation / termination of RNA polymerase I transcription / RNA polymerase III activity / transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / transcription by RNA polymerase III / transcription elongation by RNA polymerase I / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity / RNA polymerase III complex / RNA polymerase II, core complex / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / nucleolus / DNA binding / zinc ion binding / nucleus / metal ion binding / cytosol Similarity search - Function | |||||||||
Biological species | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (yeast) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.84 Å | |||||||||
Authors | Heiss F / Daiss J | |||||||||
Funding support | Germany, 2 items
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Citation | Journal: Nat Commun / Year: 2021 Title: Conserved strategies of RNA polymerase I hibernation and activation. Authors: Florian B Heiss / Julia L Daiß / Philipp Becker / Christoph Engel / Abstract: RNA polymerase (Pol) I transcribes the ribosomal RNA precursor in all eukaryotes. The mechanisms 'activation by cleft contraction' and 'hibernation by dimerization' are unique to the regulation of ...RNA polymerase (Pol) I transcribes the ribosomal RNA precursor in all eukaryotes. The mechanisms 'activation by cleft contraction' and 'hibernation by dimerization' are unique to the regulation of this enzyme, but structure-function analysis is limited to baker's yeast. To understand whether regulation by such strategies is specific to this model organism or conserved among species, we solve three cryo-EM structures of Pol I from Schizosaccharomyces pombe in different functional states. Comparative analysis of structural models derived from high-resolution reconstructions shows that activation is accomplished by a conserved contraction of the active center cleft. In contrast to current beliefs, we find that dimerization of the S. pombe polymerase is also possible. This dimerization is achieved independent of the 'connector' domain but relies on two previously undescribed interfaces. Our analyses highlight the divergent nature of Pol I transcription systems from their counterparts and suggest conservation of regulatory mechanisms among organisms. | |||||||||
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_11840.map.gz | 37.7 MB | EMDB map data format | |
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Header (meta data) | emd-11840-v30.xml emd-11840.xml | 23.7 KB 23.7 KB | Display Display | EMDB header |
Images | emd_11840.png | 184.1 KB | ||
Filedesc metadata | emd-11840.cif.gz | 8 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11840 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11840 | HTTPS FTP |
-Validation report
Summary document | emd_11840_validation.pdf.gz | 583 KB | Display | EMDB validaton report |
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Full document | emd_11840_full_validation.pdf.gz | 582.6 KB | Display | |
Data in XML | emd_11840_validation.xml.gz | 5.8 KB | Display | |
Data in CIF | emd_11840_validation.cif.gz | 6.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11840 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11840 | HTTPS FTP |
-Related structure data
Related structure data | 7aocMC 7aodC 7aoeC 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_11840.map.gz / Format: CCP4 / Size: 40.6 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: 1.0635 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 : S. pombe RNA polymerase I
+Supramolecule #1: S. pombe RNA polymerase I
+Macromolecule #1: DNA-directed RNA polymerase I subunit rpa1
+Macromolecule #2: Probable DNA-directed RNA polymerase I subunit RPA2
+Macromolecule #3: DNA-directed RNA polymerases I and III subunit RPAC1
+Macromolecule #4: DNA-directed RNA polymerase I subunit rpa14
+Macromolecule #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #6: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+Macromolecule #7: DNA-directed RNA polymerase I subunit rpa43
+Macromolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #9: DNA-directed RNA polymerase I subunit RPA12
+Macromolecule #10: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #11: DNA-directed RNA polymerases I and III subunit RPAC2
+Macromolecule #12: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #13: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.8 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 86.5 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 |
-Image processing
Startup model | Type of model: PDB ENTRY |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.84 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 79313 |
Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: ANGULAR RECONSTITUTION |