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Open data
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Basic information
Entry | Database: PDB / ID: 7fjj | ||||||
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Title | human Pol III pre-termination complex | ||||||
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![]() | TRANSCRIPTION/RNA/DNA / RNA Polymerase III / elongation / pre-termination / TRANSCRIPTION / TRANSCRIPTION-RNA-DNA complex | ||||||
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 / Cytosolic sensors of pathogen-associated DNA ...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 / 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 / positive regulation of innate immune response / Abortive elongation of HIV-1 transcript in the absence of Tat / nucleobase-containing compound metabolic process / MicroRNA (miRNA) biogenesis / FGFR2 alternative splicing / RNA Polymerase I Transcription Termination / 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 / termination of RNA polymerase III transcription / PIWI-interacting RNA (piRNA) biogenesis / RNA polymerase III activity / 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 / RNA Polymerase I Transcription Initiation / transcription by RNA polymerase I / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / transcription by RNA polymerase III / Processing of Capped Intron-Containing Pre-mRNA / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / RNA polymerase II transcribes snRNA genes / neuropeptide signaling pathway / transcription elongation by RNA polymerase I / Tat-mediated elongation of the HIV-1 transcript / tRNA transcription by RNA polymerase III / RNA polymerase I activity / Formation of HIV-1 elongation complex containing HIV-1 Tat / 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 / Inhibition of DNA recombination at telomere / RNA Polymerase II Pre-transcription Events / positive regulation of interferon-beta production / mRNA Splicing - Major Pathway / acrosomal vesicle / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / protein-DNA complex / TP53 Regulates Transcription of DNA Repair Genes / 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 / Activation of anterior HOX genes in hindbrain development during early embryogenesis / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / double-stranded DNA binding / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / defense response to virus / Estrogen-dependent gene expression / nucleic acid binding / cell population proliferation / transcription by RNA polymerase II / protein dimerization activity / nuclear body / protein stabilization / intracellular membrane-bounded organelle / innate immune response / chromatin binding / centrosome / DNA-templated transcription / nucleotide binding / magnesium ion binding / DNA binding / zinc ion binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / Resolution: 3.6 Å | ||||||
![]() | Hou, H. / Xu, Y. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insights into RNA polymerase III-mediated transcription termination through trapping poly-deoxythymidine. Authors: Haifeng Hou / Yan Li / Mo Wang / Aijun Liu / Zishuo Yu / Ke Chen / Dan Zhao / Yanhui Xu / ![]() Abstract: Termination of the RNA polymerase III (Pol III)-mediated transcription requires the conversion of an elongation complex (EC) to a pre-termination complex (PTC) on poly-deoxythymidine (dT)-containing ...Termination of the RNA polymerase III (Pol III)-mediated transcription requires the conversion of an elongation complex (EC) to a pre-termination complex (PTC) on poly-deoxythymidine (dT)-containing non-template strand, a mechanism distinct from Pol I and Pol II. Here, our in vitro transcription elongation assay showed that 5-7 dT-containing DNA template led to transcription termination of Pol III, but not Pol I or Pol II. We assembled human Pol III PTC on a 7 dT-containing DNA template and determined the structure at 3.6 Å resolution. The structure reveals that poly-dT are trapped in a narrow exit tunnel formed by RPC2. A hydrophobic gate of the exit tunnel separates the bases of two connected deoxythymidines and may prevent translocation of the non-template strand. The fork loop 2 stabilizes both template and non-template strands around the transcription fork, and may further prevent strand translocation. Our study shows that the Pol III-specific exit tunnel and FL2 allow for efficient translocation of non-poly-dT sequence during transcription elongation but trap poly-dT to promote DNA retention of Pol III, revealing molecular mechanism of poly-dT-dependent transcription termination of Pol III. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 905.6 KB | Display | ![]() |
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PDB format | ![]() | 729.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 31622MC ![]() 7fjiC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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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 genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 127953.891 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#4: Protein | Mass: 16893.990 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#7: Protein | Mass: 22938.846 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#9: Protein | Mass: 12338.104 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#13: Protein | Mass: 80004.031 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#14: Protein | Mass: 44471.875 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#15: Protein | Mass: 60692.555 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#16: Protein | Mass: 35726.914 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#17: Protein | Mass: 25953.510 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-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 genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#11: Protein | Mass: 15259.222 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-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 genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#6: Protein | Mass: 14491.026 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#8: Protein | Mass: 17162.273 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#10: Protein | Mass: 7655.123 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#12: Protein | Mass: 7018.244 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-RNA chain , 1 types, 1 molecules R
#18: RNA chain | Mass: 3208.948 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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-DNA chain , 2 types, 2 molecules XY
#19: DNA chain | Mass: 16602.605 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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#20: DNA chain | Mass: 16570.594 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
-Non-polymers , 3 types, 9 molecules ![](data/chem/img/MG.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/SF4.gif)
#21: Chemical | ChemComp-MG / | ||
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#22: Chemical | ChemComp-ZN / #23: Chemical | ChemComp-SF4 / | |
-Details
Has ligand of interest | Y |
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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
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Molecular weight | Value: 0.7 MDa / Experimental value: NO | ||||||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: NO |
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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: 1.38 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
CTF correction | Type: NONE |
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3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 48593 / Symmetry type: POINT |