+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-23888 | |||||||||
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Title | Structure of EC+EC (leading EC-focused) | |||||||||
Map data | Leading EC_map_with_sharpening by postprocesssed in Relion | |||||||||
Sample |
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Keywords | pol II / TRANSCRIPTION | |||||||||
Function / homology | Function and homology information : / : / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / RNA polymerase III activity / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / RNA polymerase II activity / transcription-coupled nucleotide-excision repair / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity ...: / : / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / RNA polymerase III activity / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / RNA polymerase II activity / transcription-coupled nucleotide-excision repair / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity / RNA polymerase III complex / positive regulation of translational initiation / RNA polymerase II, core complex / translation initiation factor binding / transcription initiation at RNA polymerase II promoter / P-body / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / single-stranded DNA binding / nucleic acid binding / single-stranded RNA binding / protein dimerization activity / nucleotide binding / DNA-templated transcription / nucleolus / DNA binding / zinc ion binding / metal ion binding Similarity search - Function | |||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.54 Å | |||||||||
Authors | Yang C / Murakami K | |||||||||
Funding support | 1 items
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Citation | Journal: Mol Cell / Year: 2022 Title: Structural visualization of de novo transcription initiation by Saccharomyces cerevisiae RNA polymerase II. Authors: Chun Yang / Rina Fujiwara / Hee Jong Kim / Pratik Basnet / Yunye Zhu / Jose J Gorbea Colón / Stefan Steimle / Benjamin A Garcia / Craig D Kaplan / Kenji Murakami / Abstract: Previous structural studies of the initiation-elongation transition of RNA polymerase II (pol II) transcription have relied on the use of synthetic oligonucleotides, often artificially discontinuous ...Previous structural studies of the initiation-elongation transition of RNA polymerase II (pol II) transcription have relied on the use of synthetic oligonucleotides, often artificially discontinuous to capture pol II in the initiating state. Here, we report multiple structures of initiation complexes converted de novo from a 33-subunit yeast pre-initiation complex (PIC) through catalytic activities and subsequently stalled at different template positions. We determine that PICs in the initially transcribing complex (ITC) can synthesize a transcript of ∼26 nucleotides before transitioning to an elongation complex (EC) as determined by the loss of general transcription factors (GTFs). Unexpectedly, transition to an EC was greatly accelerated when an ITC encountered a downstream EC stalled at promoter proximal regions and resulted in a collided head-to-end dimeric EC complex. Our structural analysis reveals a dynamic state of TFIIH, the largest of GTFs, in PIC/ITC with distinct functional consequences at multiple steps on the pathway to elongation. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_23888.map.gz | 9.9 MB | EMDB map data format | |
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Header (meta data) | emd-23888-v30.xml emd-23888.xml | 35.8 KB 35.8 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_23888_fsc.xml | 7.9 KB | Display | FSC data file |
Images | emd_23888.png | 67.9 KB | ||
Masks | emd_23888_msk_1.map | 40.6 MB | Mask map | |
Filedesc metadata | emd-23888.cif.gz | 9.7 KB | ||
Others | emd_23888_additional_1.map.gz emd_23888_half_map_1.map.gz emd_23888_half_map_2.map.gz | 31.2 MB 31.3 MB 31.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-23888 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-23888 | HTTPS FTP |
-Validation report
Summary document | emd_23888_validation.pdf.gz | 870.8 KB | Display | EMDB validaton report |
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Full document | emd_23888_full_validation.pdf.gz | 870.4 KB | Display | |
Data in XML | emd_23888_validation.xml.gz | 13.6 KB | Display | |
Data in CIF | emd_23888_validation.cif.gz | 19.1 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23888 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23888 | HTTPS FTP |
-Related structure data
Related structure data | 7mkaMC 7meiC 7mk9C 7ml0C 7ml1C 7ml2C 7ml3C 7ml4C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_23888.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Leading EC_map_with_sharpening by postprocesssed in Relion | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
File | emd_23888_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: Leading EC map without sharpening
File | emd_23888_additional_1.map | ||||||||||||
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Annotation | Leading EC_map_without_sharpening | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: EC+EC (leading EC-focused) half map 1
File | emd_23888_half_map_1.map | ||||||||||||
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Annotation | EC+EC (leading EC-focused) half map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: EC+EC (leading EC-focused) half map 2
File | emd_23888_half_map_2.map | ||||||||||||
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Annotation | EC+EC (leading EC-focused) half map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : The leading EC of complex EC+EC
+Supramolecule #1: The leading EC of complex EC+EC
+Macromolecule #1: DNA (40-MER)
+Macromolecule #2: DNA (40-MER)
+Macromolecule #3: DNA-directed RNA polymerase subunit
+Macromolecule #4: DNA-directed RNA polymerase subunit beta
+Macromolecule #5: DNA-directed RNA polymerase II subunit RPB3
+Macromolecule #6: DNA-directed RNA polymerase II subunit RPB4
+Macromolecule #7: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #8: DNA-directed RNA polymerases I,II,and III subunit RPABC2
+Macromolecule #9: DNA-directed RNA polymerase II subunit RPB7
+Macromolecule #10: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #11: DNA-directed RNA polymerase II subunit RPB9
+Macromolecule #12: DNA-directed RNA polymerases II subunit RPABC5
+Macromolecule #13: DNA-directed RNA polymerase II subunit RPB11
+Macromolecule #14: DNA-directed RNA polymerases II subunit RPABC4
+Macromolecule #15: RNA (5'-R(P*AP*AP*CP*UP*AP*GP*UP*UP*AP*AP*GP*AP*GP*GP*UP*U)-3')
+Macromolecule #16: ZINC ION
+Macromolecule #17: MAGNESIUM ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 1.0 mg/mL |
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Buffer | pH: 7.6 / Details: 20 mM HEPES PH 7.6 50 mM KoAc 5 mM DTT 2 mM MgoAc |
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER |
Vitrification | Cryogen name: ETHANE / Instrument: LEICA EM CPC |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.75 µm / Nominal defocus min: 0.75 µm / Nominal magnification: 81000 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Initial model |
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Refinement | Space: REAL / Protocol: RIGID BODY FIT | ||||||||
Output model | PDB-7mka: |