+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-4180 | |||||||||
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Title | RNA Polymerase III open complex | |||||||||
Map data | OC map sharpened with relion_postprocess | |||||||||
Sample |
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Keywords | Transcription / RNA Polymerase III / TFIIIB / Pre-initiation complex / Brf1 / Bdp1 / TBP / Pol III / Enzyme | |||||||||
Function / homology | Function and homology information RNA polymerase III core binding / TFIIA-class transcription factor complex binding / DNA-templated transcription open complex formation / transcription factor TFIIIB complex / RNA polymerase III preinitiation complex assembly / RNA polymerase III transcription regulatory region sequence-specific DNA binding / TFIIIC-class transcription factor complex binding / RNA polymerase III type 3 promoter sequence-specific DNA binding / regulation of transcription by RNA polymerase III / RNA polymerase I general transcription initiation factor binding ...RNA polymerase III core binding / TFIIA-class transcription factor complex binding / DNA-templated transcription open complex formation / transcription factor TFIIIB complex / RNA polymerase III preinitiation complex assembly / RNA polymerase III transcription regulatory region sequence-specific DNA binding / TFIIIC-class transcription factor complex binding / RNA polymerase III type 3 promoter sequence-specific DNA binding / regulation of transcription by RNA polymerase III / RNA polymerase I general transcription initiation factor binding / RNA polymerase III general transcription initiation factor activity / transcription factor TFIIA complex / RNA polymerase I preinitiation complex assembly / transcription preinitiation complex / DNA binding, bending / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / transcription factor TFIID complex / 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 II general transcription initiation factor activity / RNA-templated transcription / RNA Polymerase II Pre-transcription Events / termination of RNA polymerase III transcription / Formation of TC-NER Pre-Incision Complex / RNA polymerase III activity / transcription initiation at RNA polymerase III promoter / termination of RNA polymerase I transcription / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / Estrogen-dependent gene expression / transcription by RNA polymerase III / Dual incision in TC-NER / transcription elongation by RNA polymerase I / tRNA transcription by RNA polymerase III / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase I activity / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase II, core complex / RNA polymerase II preinitiation complex assembly / TBP-class protein binding / nucleotidyltransferase activity / DNA-templated transcription initiation / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / disordered domain specific binding / peroxisome / ribosome biogenesis / single-stranded DNA binding / DNA-binding transcription factor binding / RNA polymerase II-specific DNA-binding transcription factor binding / transcription regulator complex / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / negative regulation of DNA-templated transcription / nucleotide binding / chromatin binding / regulation of DNA-templated transcription / nucleolus / positive regulation of transcription by RNA polymerase II / protein-containing complex / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) / Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
Authors | Vorlaender MK / Khatter H | |||||||||
Funding support | 1 items
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Citation | Journal: Nature / Year: 2018 Title: Molecular mechanism of promoter opening by RNA polymerase III. Authors: Matthias K Vorländer / Heena Khatter / Rene Wetzel / Wim J H Hagen / Christoph W Müller / Abstract: RNA polymerase III (Pol III) and transcription factor IIIB (TFIIIB) assemble together on different promoter types to initiate the transcription of small, structured RNAs. Here we present structures ...RNA polymerase III (Pol III) and transcription factor IIIB (TFIIIB) assemble together on different promoter types to initiate the transcription of small, structured RNAs. Here we present structures of Pol III preinitiation complexes, comprising the 17-subunit Pol III and the heterotrimeric transcription factor TFIIIB, bound to a natural promoter in different functional states. Electron cryo-microscopy reconstructions, varying from 3.7 Å to 5.5 Å resolution, include two early intermediates in which the DNA duplex is closed, an open DNA complex, and an initially transcribing complex with RNA in the active site. Our structures reveal an extremely tight, multivalent interaction between TFIIIB and promoter DNA, and explain how TFIIIB recruits Pol III. Together, TFIIIB and Pol III subunit C37 activate the intrinsic transcription factor-like activity of the Pol III-specific heterotrimer to initiate the melting of double-stranded DNA, in a mechanism similar to that of the Pol II system. | |||||||||
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_4180.map.gz | 6.2 MB | EMDB map data format | |
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Header (meta data) | emd-4180-v30.xml emd-4180.xml | 46.5 KB 46.5 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_4180_fsc.xml | 10.6 KB | Display | FSC data file |
Images | emd_4180.png | 47.1 KB | ||
Masks | emd_4180_msk_1.map | 103 MB | Mask map | |
Filedesc metadata | emd-4180.cif.gz | 12 KB | ||
Others | emd_4180_additional.map.gz | 3.7 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4180 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4180 | HTTPS FTP |
-Validation report
Summary document | emd_4180_validation.pdf.gz | 301.1 KB | Display | EMDB validaton report |
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Full document | emd_4180_full_validation.pdf.gz | 300.3 KB | Display | |
Data in XML | emd_4180_validation.xml.gz | 11.2 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4180 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4180 | HTTPS FTP |
-Related structure data
Related structure data | 6f40MC 4181C 4182C 4183C 4184C 6f41C 6f42C 6f44C C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | |
EM raw data | EMPIAR-10168 (Title: RNA Polymerase III pre-initiation complex / Data size: 4.0 TB / Data #1: Movie frames [micrographs - multiframe] Data #2: Aligned sums of the movie frames without doseweighting [micrographs - single frame] Data #3: Doseweighted aligned sums of the movie frames [micrographs - multiframe] Data #4: Movie frames [micrographs - multiframe] Data #5: Aligned sums of the movie frames without doseweighting [micrographs - single frame] Data #6: Doseweighted aligned sums of the movie frames [micrographs - multiframe]) |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_4180.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | OC map sharpened with relion_postprocess | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.35 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
File | emd_4180_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: OC map sharpened with LocScale
File | emd_4180_additional.map | ||||||||||||
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Annotation | OC map sharpened with LocScale | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : RNA Polymerase III open complex
+Supramolecule #1: RNA Polymerase III open complex
+Supramolecule #2: RNA Polymerase III
+Supramolecule #3: Transcription factor IIIB
+Supramolecule #4: Nucleic acids
+Macromolecule #1: DNA-directed RNA polymerase III subunit RPC1
+Macromolecule #2: DNA-directed RNA polymerase III subunit RPC2
+Macromolecule #3: DNA-directed RNA polymerases I and III subunit RPAC1
+Macromolecule #4: DNA-directed RNA polymerase III subunit RPC9
+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 III subunit RPC8
+Macromolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #9: DNA-directed RNA polymerase III subunit RPC10
+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: DNA-directed RNA polymerase III subunit RPC5
+Macromolecule #14: DNA-directed RNA polymerase III subunit RPC4
+Macromolecule #15: DNA-directed RNA polymerase III subunit RPC3
+Macromolecule #16: DNA-directed RNA polymerase III subunit RPC6
+Macromolecule #17: DNA-directed RNA polymerase III subunit RPC7
+Macromolecule #18: TATA-box-binding protein
+Macromolecule #19: Transcription factor IIIB 70 kDa subunit
+Macromolecule #20: Transcription factor TFIIIB component B''
+Macromolecule #21: Non-Template DNA
+Macromolecule #22: Template DNA
+Macromolecule #23: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.02 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil R2/1 / Material: COPPER / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
Details | Crosslinked with glutaraldehyde |
-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 / Average electron dose: 60.9 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 |
+Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL / Overall B value: 130 / Target criteria: Cross-correlation coefficient |
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Output model | PDB-6f40: |