+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-31878 | |||||||||
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Title | Back track state of human RNA Polymerase I Elongation Complex | |||||||||
Map data | ||||||||||
Sample |
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Keywords | RNA Polymerase I / transcription / back track state / TRANSCRIPTION-DNA-RNA complex | |||||||||
Function / homology | Function and homology information RNA polymerase I transcription regulator complex / negative regulation of protein localization to nucleolus / nucleologenesis / neural crest formation / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / RPAP3/R2TP/prefoldin-like complex / RNA polymerase I general transcription initiation factor binding ...RNA polymerase I transcription regulator complex / negative regulation of protein localization to nucleolus / nucleologenesis / neural crest formation / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / RPAP3/R2TP/prefoldin-like complex / RNA polymerase I general transcription initiation factor binding / Cytosolic sensors of pathogen-associated DNA / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Polymerase III Transcription Initiation From Type 3 Promoter / RNA Polymerase III Abortive And Retractive Initiation / RNA polymerase I preinitiation complex assembly / Abortive elongation of HIV-1 transcript in the absence of Tat / nucleobase-containing compound metabolic process / RNA Polymerase I Transcription Termination / FGFR2 alternative splicing / MicroRNA (miRNA) biogenesis / Signaling by FGFR2 IIIa TM / Viral Messenger RNA Synthesis / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / PIWI-interacting RNA (piRNA) biogenesis / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / 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 activity / termination of RNA polymerase I transcription / nucleolar large rRNA transcription by RNA polymerase I / mRNA Splicing - Minor Pathway / RNA Polymerase I Transcription Initiation / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / rRNA transcription / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Processing of Capped Intron-Containing Pre-mRNA / transcription by RNA polymerase III / RNA polymerase II transcribes snRNA genes / Tat-mediated elongation of the HIV-1 transcript / transcription elongation by RNA polymerase I / Formation of HIV-1 elongation complex containing HIV-1 Tat / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase I complex / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / cell surface receptor protein tyrosine kinase signaling pathway / RNA Polymerase II Pre-transcription Events / Inhibition of DNA recombination at telomere / embryo implantation / mRNA Splicing - Major Pathway / protein-DNA complex / cellular response to leukemia inhibitory factor / DNA-templated transcription initiation / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / ribonucleoside binding / fibrillar center / DNA-directed 5'-3' RNA polymerase activity / Activation of anterior HOX genes in hindbrain development during early embryogenesis / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / single-stranded DNA binding / chromosome / Estrogen-dependent gene expression / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / protein stabilization / chromatin binding / nucleolus / magnesium ion binding / mitochondrion / DNA binding / RNA binding / zinc ion binding / nucleoplasm / nucleus Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.01 Å | |||||||||
Authors | Zhao D / Liu W | |||||||||
Funding support | 1 items
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Citation | Journal: Cell Discov / Year: 2021 Title: Structure of the human RNA polymerase I elongation complex. Authors: Dan Zhao / Weida Liu / Ke Chen / Zihan Wu / Huirong Yang / Yanhui Xu / Abstract: Eukaryotic RNA polymerase I (Pol I) transcribes ribosomal DNA and generates RNA for ribosome synthesis. Pol I accounts for the majority of cellular transcription activity and dysregulation of Pol I ...Eukaryotic RNA polymerase I (Pol I) transcribes ribosomal DNA and generates RNA for ribosome synthesis. Pol I accounts for the majority of cellular transcription activity and dysregulation of Pol I transcription leads to cancers and ribosomopathies. Despite extensive structural studies of yeast Pol I, structure of human Pol I remains unsolved. Here we determined the structures of the human Pol I in the pre-translocation, post-translocation, and backtracked states at near-atomic resolution. The single-subunit peripheral stalk lacks contacts with the DNA-binding clamp and is more flexible than the two-subunit stalk in yeast Pol I. Compared to yeast Pol I, human Pol I possesses a more closed clamp, which makes more contacts with DNA. The Pol I structure in the post-cleavage backtracked state shows that the C-terminal zinc ribbon of RPA12 inserts into an open funnel and facilitates "dinucleotide cleavage" on mismatched DNA-RNA hybrid. Critical disease-associated mutations are mapped on Pol I regions that are involved in catalysis and complex organization. In summary, the structures provide new sights into human Pol I complex organization and efficient proofreading. | |||||||||
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_31878.map.gz | 118.2 MB | EMDB map data format | |
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Header (meta data) | emd-31878-v30.xml emd-31878.xml | 29.3 KB 29.3 KB | Display Display | EMDB header |
Images | emd_31878.png | 28.6 KB | ||
Filedesc metadata | emd-31878.cif.gz | 9.4 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-31878 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31878 | HTTPS FTP |
-Validation report
Summary document | emd_31878_validation.pdf.gz | 547.5 KB | Display | EMDB validaton report |
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Full document | emd_31878_full_validation.pdf.gz | 547 KB | Display | |
Data in XML | emd_31878_validation.xml.gz | 6.8 KB | Display | |
Data in CIF | emd_31878_validation.cif.gz | 7.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31878 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31878 | HTTPS FTP |
-Related structure data
Related structure data | 7vbcMC 7vbaC 7vbbC 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_31878.map.gz / Format: CCP4 / Size: 125 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: 1.054 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 : back track state of human RNA Polymerase I Elongation Complex
+Supramolecule #1: back track state of human RNA Polymerase I Elongation Complex
+Macromolecule #1: DNA-directed RNA polymerase I subunit RPA1
+Macromolecule #2: DNA-directed RNA polymerase I subunit RPA2
+Macromolecule #3: DNA-directed RNA polymerases I and III subunit RPAC1
+Macromolecule #4: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #5: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+Macromolecule #6: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #7: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #8: DNA-directed RNA polymerases I and III subunit RPAC2
+Macromolecule #9: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #10: DNA-directed RNA polymerase I subunit RPA34
+Macromolecule #11: DNA-directed RNA polymerase I subunit RPA43
+Macromolecule #12: DNA-directed RNA polymerase I subunit RPA49
+Macromolecule #13: DNA-directed RNA polymerase I subunit RPA12
+Macromolecule #14: RNA (5'-R(P*UP*GP*CP*UP*GP*A)-3')
+Macromolecule #15: DNA (5'-D(P*AP*GP*GP*AP*CP*AP*GP*CP*GP*TP*GP*TP*CP*AP*GP*CP*AP*AP...
+Macromolecule #16: DNA (5'-D(*GP*TP*AP*CP*TP*GP*TP*CP*CP*TP*CP*TP*GP*G)-3')
+Macromolecule #17: ZINC ION
+Macromolecule #18: 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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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 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: 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: 3.01 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 152653 |
Initial angle assignment | Type: OTHER |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |