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Yorodumi- PDB-8qeq: RNA polymerase II bound to minimal Alu RNA right arm in the alter... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 8qeq | ||||||
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| Title | RNA polymerase II bound to minimal Alu RNA right arm in the alternative conformation | ||||||
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Keywords | TRANSCRIPTION / transcription inhibition / noncoding RNA / RNA polymerase II / Alu RNA | ||||||
| Function / homology | Function and homology informationFormation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA ...Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Elongation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Pol II CTD phosphorylation and interaction with CE / Estrogen-dependent gene expression / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / mRNA Splicing - Major Pathway / nuclear lumen / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / transcription-coupled nucleotide-excision repair / DNA-directed RNA polymerase complex / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / fibrillar center / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / nucleic acid binding / transcription by RNA polymerase II / protein dimerization activity / DNA-templated transcription / nucleolus / mitochondrion / DNA binding / zinc ion binding / metal ion binding / nucleus / cytosol Similarity search - Function | ||||||
| Biological species | ![]() Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
Authors | Tluckova, K. / Bernecky, C. | ||||||
| Funding support | Austria, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2025Title: Mechanism of mammalian transcriptional repression by noncoding RNA. Authors: Katarína Tlučková / Beata Kaczmarek / Anita Salmazo / Carrie Bernecky / ![]() Abstract: Transcription by RNA polymerase II (Pol II) can be repressed by noncoding RNA, including the human RNA Alu. However, the mechanism by which endogenous RNAs repress transcription remains unclear. Here ...Transcription by RNA polymerase II (Pol II) can be repressed by noncoding RNA, including the human RNA Alu. However, the mechanism by which endogenous RNAs repress transcription remains unclear. Here we present cryogenic-electron microscopy structures of Pol II bound to Alu RNA, which reveal that Alu RNA mimics how DNA and RNA bind to Pol II during transcription elongation. Further, we show how distinct domains of the general transcription factor TFIIF control repressive activity. Together, we reveal how a noncoding RNA can regulate mammalian gene expression. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8qeq.cif.gz | 921.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8qeq.ent.gz | 591.7 KB | Display | PDB format |
| PDBx/mmJSON format | 8qeq.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8qeq_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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| Full document | 8qeq_full_validation.pdf.gz | 1.5 MB | Display | |
| Data in XML | 8qeq_validation.xml.gz | 103.6 KB | Display | |
| Data in CIF | 8qeq_validation.cif.gz | 161.9 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qe/8qeq ftp://data.pdbj.org/pub/pdb/validation_reports/qe/8qeq | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 18376MC ![]() 8qepC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-DNA-directed RNA polymerase ... , 6 types, 6 molecules ABCEIK
| #1: Protein | Mass: 217450.078 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: A0A8D1DPV6, DNA-directed RNA polymerase |
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| #2: Protein | Mass: 134041.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: A0A0B8RVL1, DNA-directed RNA polymerase |
| #3: Protein | Mass: 31439.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #4: Protein | Mass: 24644.318 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #7: Protein | Mass: 14541.221 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #9: Protein | Mass: 13310.284 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-DNA-directed RNA polymerases I, II, and III subunit ... , 3 types, 3 molecules FHJ
| #5: Protein | Mass: 14477.001 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #6: Protein | Mass: 17162.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #8: Protein | Mass: 7655.123 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein / RNA chain , 2 types, 2 molecules LR
| #10: Protein | Mass: 7018.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #11: RNA chain | Mass: 24768.809 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
-Non-polymers , 2 types, 8 molecules 


| #12: Chemical | ChemComp-ZN / #13: Chemical | ChemComp-MG / | |
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-Details
| Has ligand of interest | N |
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| Has protein modification | N |
-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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| Source (natural) |
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| Source (recombinant) | Organism: synthetic construct (others) | ||||||||||||||||||||||||||||
| Buffer solution | pH: 7.25 | ||||||||||||||||||||||||||||
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| Specimen | Conc.: 0.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
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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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 1.81 sec. / Electron dose: 41 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7588 |
| EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 10 eV |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 704869 | ||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 90778 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | B value: 39.56 / Protocol: OTHER / Space: REAL | ||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 5OIK Accession code: 5OIK / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 49.23 Å2 | ||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Homo sapiens (human)
Austria, 1items
Citation




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FIELD EMISSION GUN
