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Yorodumi- EMDB-30577: cryo-EM structure of human RNA polymerase III in elongating state -
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Basic information
| Entry | Database: EMDB / ID: EMD-30577 | |||||||||
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| Title | cryo-EM structure of human RNA polymerase III in elongating state | |||||||||
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Keywords | RNA Polymerase III / TRANSCRIPTION | |||||||||
| Function / homology | Function and homology informationsnRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / DNA/RNA hybrid binding / calcitonin gene-related peptide receptor activity / RNA Polymerase III Transcription Termination / regulation of transcription by RNA polymerase III / regulation of transcription by RNA polymerase I / DNA polymerase III complex / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter ...snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / DNA/RNA hybrid binding / calcitonin gene-related peptide receptor activity / RNA Polymerase III Transcription Termination / regulation of transcription by RNA polymerase III / regulation of transcription by RNA polymerase I / DNA polymerase III complex / 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 / Cytosolic sensors of pathogen-associated DNA / positive regulation of innate immune response / nucleobase-containing compound metabolic process / Abortive elongation of HIV-1 transcript in the absence of Tat / FGFR2 alternative splicing / RNA Polymerase I Transcription Termination / Viral Messenger RNA Synthesis / Signaling by FGFR2 IIIa TM / MicroRNA (miRNA) biogenesis / 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 / 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 / Processing of Capped Intron-Containing Pre-mRNA / PIWI-interacting RNA (piRNA) biogenesis / mRNA Splicing - Minor Pathway / RNA Polymerase I Transcription Initiation / RNA polymerase II transcribes snRNA genes / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / termination of RNA polymerase I transcription / transcription by RNA polymerase III / nucleolar large rRNA transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / termination of RNA polymerase III transcription / transcription initiation at RNA polymerase III promoter / RNA Polymerase II Transcription Elongation / RNA polymerase I complex / RNA polymerase III complex / Formation of RNA Pol II elongation complex / RNA polymerase II, core complex / transcription elongation by RNA polymerase I / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / RNA Polymerase II Pre-transcription Events / mRNA Splicing - Major Pathway / positive regulation of interferon-beta production / acrosomal vesicle / Inhibition of DNA recombination at telomere / DNA-templated transcription elongation / TP53 Regulates Transcription of DNA Repair Genes / Transcriptional regulation by small RNAs / RNA Polymerase I Promoter Escape / transcription initiation at RNA polymerase II promoter / protein-DNA complex / transcription elongation by RNA polymerase II / fibrillar center / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / transcription by RNA polymerase II / cell population proliferation / ribonucleoside binding / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / mRNA Polyadenylation / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / DNA-directed RNA polymerase activity / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / Dengue Virus-Host Interactions / double-stranded DNA binding / defense response to virus / Estrogen-dependent gene expression / nucleic acid binding / nuclear body / protein stabilization / protein dimerization activity / innate immune response / nucleotide binding / centrosome / chromatin binding / magnesium ion binding Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
Authors | Wang Q / Wan F | |||||||||
Citation | Journal: Nat Struct Mol Biol / Year: 2021Title: Structural insights into transcriptional regulation of human RNA polymerase III. Authors: Qianmin Wang / Shaobai Li / Futang Wan / Youwei Xu / Zhenfang Wu / Mi Cao / Pengfei Lan / Ming Lei / Jian Wu / ![]() Abstract: RNA polymerase III (Pol III) synthesizes structured, essential small RNAs, such as transfer RNA, 5S ribosomal RNA and U6 small nuclear RNA. Pol III, the largest nuclear RNA polymerase, is composed of ...RNA polymerase III (Pol III) synthesizes structured, essential small RNAs, such as transfer RNA, 5S ribosomal RNA and U6 small nuclear RNA. Pol III, the largest nuclear RNA polymerase, is composed of a conserved core region and eight constitutive regulatory subunits, but how these factors jointly regulate Pol III transcription remains unclear. Here, we present cryo-EM structures of human Pol III in both apo and elongating states, which unveil both an orchestrated movement during the apo-to-elongating transition and an unexpected apo state in which the RPC7 subunit tail occupies the DNA-RNA-binding cleft of Pol III, suggesting that RPC7 plays important roles in both autoinhibition and transcription initiation. The structures also reveal a proofreading mechanism for the TFIIS-like subunit RPC10, which stably retains its catalytic position in the secondary channel, explaining the high fidelity of Pol III transcription. Our work provides an integrated picture of the mechanism of Pol III transcription regulation. | |||||||||
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Structure visualization
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
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Downloads & links
-EMDB archive
| Map data | emd_30577.map.gz | 115.5 MB | EMDB map data format | |
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| Header (meta data) | emd-30577-v30.xml emd-30577.xml | 34.6 KB 34.6 KB | Display Display | EMDB header |
| Images | emd_30577.png | 87.7 KB | ||
| Filedesc metadata | emd-30577.cif.gz | 10.4 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30577 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30577 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7d58MC ![]() 7d59C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_30577.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: 1.1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Human Pol3 EC
+Supramolecule #1: Human Pol3 EC
+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: Non-template DNA
+Macromolecule #19: Template DNA
+Macromolecule #20: RNA
+Macromolecule #21: ZINC ION
+Macromolecule #22: IRON/SULFUR CLUSTER
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 8 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k 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 |
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About Yorodumi


Keywords
Homo sapiens (human)
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