+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-12450 | |||||||||||||||
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Title | RNA Polymerase II-Spt4/5-nucleosome-FACT structure | |||||||||||||||
Map data | Map D | |||||||||||||||
Sample |
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Keywords | Chromatin / nucleosome / elongation / histone chaperone / TRANSCRIPTION | |||||||||||||||
Function / homology | Function and homology information Regulation of TP53 Activity through Phosphorylation / regulation of sister chromatid cohesion / FACT complex / regulation of chromatin organization / DSIF complex / regulation of transcription elongation by RNA polymerase II / nucleosome organization / RPB4-RPB7 complex / replication fork protection complex / RNA Polymerase I Transcription Initiation ...Regulation of TP53 Activity through Phosphorylation / regulation of sister chromatid cohesion / FACT complex / regulation of chromatin organization / DSIF complex / regulation of transcription elongation by RNA polymerase II / nucleosome organization / RPB4-RPB7 complex / replication fork protection complex / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / RNA Polymerase III Transcription Initiation From Type 2 Promoter / transcription elongation-coupled chromatin remodeling / 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 / termination of RNA polymerase II transcription / 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 Pre-transcription Events / RNA-templated transcription / termination of RNA polymerase III transcription / Formation of TC-NER Pre-Incision Complex / transcription initiation at RNA polymerase III promoter / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / termination of RNA polymerase I transcription / RNA Polymerase I Promoter Escape / RNA polymerase II complex binding / 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 / nuclear-transcribed mRNA catabolic process / Estrogen-dependent gene expression / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / transcription by RNA polymerase III / RNA polymerase II activity / chromosome, centromeric region / Dual incision in TC-NER / positive regulation of RNA polymerase II transcription preinitiation complex assembly / positive regulation of transcription initiation by RNA polymerase II / transcription elongation by RNA polymerase I / transcription-coupled nucleotide-excision repair / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity / RNA polymerase III complex / translesion synthesis / positive regulation of translational initiation / RNA polymerase II, core complex / translation initiation factor binding / regulation of DNA-templated transcription elongation / DNA-templated transcription initiation / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / P-body / ribonucleoside binding / DNA-templated DNA replication / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / mRNA processing / cytoplasmic stress granule / structural constituent of chromatin / nucleosome / peroxisome / nucleosome assembly / ribosome biogenesis / chromatin organization / single-stranded DNA binding / chromosome / transcription by RNA polymerase II / DNA replication / nucleic acid binding / single-stranded RNA binding / protein dimerization activity / protein heterodimerization activity / DNA repair / mRNA binding / nucleotide binding / chromatin / regulation of transcription by RNA polymerase II / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) / Xenopus laevis (African clawed frog) / synthetic RNA (others) / synthetic construct (others) / Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||||||||
Authors | Farnung L / Ochmann M | |||||||||||||||
Funding support | European Union, Germany, 4 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2021 Title: Structural basis of nucleosome transcription mediated by Chd1 and FACT. Authors: Lucas Farnung / Moritz Ochmann / Maik Engeholm / Patrick Cramer / Abstract: Efficient transcription of RNA polymerase II (Pol II) through nucleosomes requires the help of various factors. Here we show biochemically that Pol II transcription through a nucleosome is ...Efficient transcription of RNA polymerase II (Pol II) through nucleosomes requires the help of various factors. Here we show biochemically that Pol II transcription through a nucleosome is facilitated by the chromatin remodeler Chd1 and the histone chaperone FACT when the elongation factors Spt4/5 and TFIIS are present. We report cryo-EM structures of transcribing Saccharomyces cerevisiae Pol II-Spt4/5-nucleosome complexes with bound Chd1 or FACT. In the first structure, Pol II transcription exposes the proximal histone H2A-H2B dimer that is bound by Spt5. Pol II has also released the inhibitory DNA-binding region of Chd1 that is poised to pump DNA toward Pol II. In the second structure, Pol II has generated a partially unraveled nucleosome that binds FACT, which excludes Chd1 and Spt5. These results suggest that Pol II progression through a nucleosome activates Chd1, enables FACT binding and eventually triggers transfer of FACT together with histones to upstream DNA. | |||||||||||||||
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_12450.map.gz | 223.4 MB | EMDB map data format | |
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Header (meta data) | emd-12450-v30.xml emd-12450.xml | 51.6 KB 51.6 KB | Display Display | EMDB header |
Images | emd_12450.png | 103.6 KB | ||
Filedesc metadata | emd-12450.cif.gz | 12.6 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-12450 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-12450 | HTTPS FTP |
-Validation report
Summary document | emd_12450_validation.pdf.gz | 490.7 KB | Display | EMDB validaton report |
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Full document | emd_12450_full_validation.pdf.gz | 490.3 KB | Display | |
Data in XML | emd_12450_validation.xml.gz | 6.6 KB | Display | |
Data in CIF | emd_12450_validation.cif.gz | 7.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12450 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12450 | HTTPS FTP |
-Related structure data
Related structure data | 7nkyMC 7nkxC 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_12450.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Map D | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.05 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 : Complex of RNA polymerase II-Spt4/5-FACT-nucleosome
+Supramolecule #1: Complex of RNA polymerase II-Spt4/5-FACT-nucleosome
+Supramolecule #2: RNA (5'-R(P*UP*CP*UP*UP*UP*UP*AP*UP*UP*UP*UP*UP*UP*CP*UP*G)-3')
+Supramolecule #3: DNA (138-MER)
+Supramolecule #4: DNA (148-MER)
+Supramolecule #5: DNA-directed RNA polymerase II subunit RPB1
+Supramolecule #6: DNA-directed RNA polymerase II subunit RPB2
+Supramolecule #7: DNA-directed RNA polymerase II subunit RPB3
+Supramolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Supramolecule #9: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+Supramolecule #10: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Supramolecule #11: DNA-directed RNA polymerase II subunit RPB9
+Supramolecule #12: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Supramolecule #13: DNA-directed RNA polymerase II subunit RPB11
+Supramolecule #14: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Supramolecule #15: Chromatin elongation factor SPT4
+Supramolecule #16: Transcription elongation factor SPT5
+Supramolecule #17: DNA-directed RNA polymerase II subunit RPB4
+Supramolecule #18: DNA-directed RNA polymerase II subunit RPB7
+Supramolecule #19: FACT complex subunit POB3
+Supramolecule #20: FACT complex subunit SPT16
+Supramolecule #21: Histone H3.2
+Supramolecule #22: Histone H4
+Supramolecule #23: Histone H2A type 1
+Supramolecule #24: Histone H2B 1.1
+Macromolecule #1: RNA (5'-R(P*UP*CP*UP*UP*UP*UP*AP*UP*UP*UP*UP*UP*UP*CP*UP*G)-3')
+Macromolecule #2: DNA (138-MER)
+Macromolecule #3: DNA (148-MER)
+Macromolecule #4: DNA-directed RNA polymerase II subunit RPB1
+Macromolecule #5: DNA-directed RNA polymerase II subunit RPB2
+Macromolecule #6: DNA-directed RNA polymerase II subunit RPB3
+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 polymerases I, II, and III subunit RPABC3
+Macromolecule #10: DNA-directed RNA polymerase II subunit RPB9
+Macromolecule #11: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #12: DNA-directed RNA polymerase II subunit RPB11
+Macromolecule #13: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #14: Chromatin elongation factor SPT4
+Macromolecule #15: Transcription elongation factor SPT5
+Macromolecule #16: DNA-directed RNA polymerase II subunit RPB4
+Macromolecule #17: DNA-directed RNA polymerase II subunit RPB7
+Macromolecule #18: FACT complex subunit POB3
+Macromolecule #19: FACT complex subunit SPT16
+Macromolecule #20: Histone H3.2
+Macromolecule #21: Histone H4
+Macromolecule #22: Histone H2A type 1
+Macromolecule #23: Histone H2B 1.1
+Macromolecule #24: ZINC ION
+Macromolecule #25: MAGNESIUM ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Grid | Model: Quantifoil R2/2 / Material: GOLD / Mesh: 200 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 40.25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 47138 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |