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Open data
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Basic information
Entry | Database: PDB / ID: 7d59 | ||||||
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Title | cryo-EM structure of human RNA polymerase III in apo state | ||||||
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![]() | TRANSCRIPTION / RNA Polymerase III | ||||||
Function / homology | ![]() snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / RNA Polymerase III Transcription Initiation From Type 1 Promoter ...snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / 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 / Cytosolic sensors of pathogen-associated DNA / RNA Polymerase III Abortive And Retractive Initiation / 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 / MicroRNA (miRNA) biogenesis / Viral Messenger RNA Synthesis / Signaling by FGFR2 IIIa TM / 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 / transcription initiation at RNA polymerase III promoter / mRNA Splicing - Minor Pathway / PIWI-interacting RNA (piRNA) biogenesis / RNA Polymerase I Transcription Initiation / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / Processing of Capped Intron-Containing Pre-mRNA / RNA polymerase II transcribes snRNA genes / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / neuropeptide signaling pathway / Tat-mediated elongation of the HIV-1 transcript / transcription by RNA polymerase III / transcription by RNA polymerase I / Formation of HIV-1 elongation complex containing HIV-1 Tat / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / : / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / DNA-directed RNA polymerase activity / Inhibition of DNA recombination at telomere / mRNA Splicing - Major Pathway / positive regulation of interferon-beta production / acrosomal vesicle / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / protein-DNA complex / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / ribonucleoside binding / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Activation of anterior HOX genes in hindbrain development during early embryogenesis / : / : / : / : / : / : / DNA-directed RNA polymerase / fibrillar center / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / double-stranded DNA binding / defense response to virus / Estrogen-dependent gene expression / transcription by RNA polymerase II / nucleic acid binding / cell population proliferation / protein dimerization activity / protein stabilization / nuclear body / innate immune response / nucleotide binding / intracellular membrane-bounded organelle / DNA-templated transcription / centrosome Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
![]() | Wang, Q. / Wan, F. / Lan, P. / Wu, J. / Lei, M. | ||||||
![]() | ![]() Title: 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. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 907.4 KB | Display | ![]() |
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PDB format | ![]() | 725.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 124.2 KB | Display | |
Data in CIF | ![]() | 190.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 30578MC ![]() 7d58C C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
-DNA-directed RNA polymerase III subunit ... , 10 types, 10 molecules ABDGIMNOPQ
#1: Protein | Mass: 155860.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#2: Protein | Mass: 127953.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#4: Protein | Mass: 16893.990 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#7: Protein | Mass: 22938.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#9: Protein | Mass: 12354.104 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#13: Protein | Mass: 80004.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 44471.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#15: Protein | Mass: 60692.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#16: Protein | Mass: 35726.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#17: Protein | Mass: 25953.510 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-DNA-directed RNA polymerases I and III subunit ... , 2 types, 2 molecules CK
#3: Protein | Mass: 39301.672 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#11: Protein | Mass: 15259.222 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-DNA-directed RNA polymerases I, II, and III subunit ... , 5 types, 5 molecules EFHJL
#5: Protein | Mass: 24584.223 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#6: Protein | Mass: 14491.026 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#8: Protein | Mass: 17162.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#10: Protein | Mass: 7655.123 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#12: Protein | Mass: 7018.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 2 types, 8 molecules 


#18: Chemical | ChemComp-ZN / #19: Chemical | ChemComp-SF4 / | |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: RNA Pol3 Apo / Type: COMPLEX / Entity ID: #1-#17 / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 264514 / Symmetry type: POINT |