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- EMDB-50972: Yeast RNA polymerase I elongation complex stalled by an apurinic ... -
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Open data
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Basic information
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Title | Yeast RNA polymerase I elongation complex stalled by an apurinic site, open state | |||||||||
![]() | Cryo-EM sharpened map of 12-subunit RNA polymerase I | |||||||||
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![]() | DNA lesion / TRANSCRIPTION | |||||||||
Function / homology | ![]() RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape ...RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / 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 / termination of RNA polymerase III transcription / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / regulation of cell size / Formation of TC-NER Pre-Incision Complex / RNA Polymerase I Promoter Escape / transcription initiation at RNA polymerase III promoter / termination of RNA polymerase I transcription / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription initiation at RNA polymerase I promoter / Estrogen-dependent gene expression / Dual incision in TC-NER / transcription by RNA polymerase III / transcription by RNA polymerase I / 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 initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / promoter-specific chromatin binding / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / peroxisome / ribosome biogenesis / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / nucleolus / negative regulation of transcription by RNA polymerase II / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / metal ion binding / nucleus / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
![]() | Santos-Aledo A / Plaza-Pegueroles A / Ruiz FM / Fernandez-Tornero C | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM uncovers a sequential mechanism for RNA polymerase I pausing and stalling at abasic DNA lesions. Authors: Alicia Santos-Aledo / Adrián Plaza-Pegueroles / Marta Sanz-Murillo / Federico M Ruiz / Peini Hou / Jun Xu / David Gil-Carton / Dong Wang / Carlos Fernández-Tornero / ![]() ![]() Abstract: During synthesis of the ribosomal RNA precursor, RNA polymerase I (Pol I) monitors DNA integrity but its response to DNA damage remains poorly studied. Abasic sites are among the most prevalent DNA ...During synthesis of the ribosomal RNA precursor, RNA polymerase I (Pol I) monitors DNA integrity but its response to DNA damage remains poorly studied. Abasic sites are among the most prevalent DNA lesions in eukaryotic cells, and their detection is critical for cell survival. We report cryo-EM structures of Pol I in different stages of stalling at abasic sites, supported by in vitro transcription studies. Slow nucleotide addition opposite abasic sites occurs through base sandwiching between the RNA 3'-end and the Pol I bridge helix. Templating abasic sites can also cause Pol I cleft opening, which enables the A12 subunit to access the active center. Nucleotide addition opposite the lesion induces a translocation intermediate where DNA bases tilt to form hydrogen bonds with the new RNA base. These findings reveal unique mechanisms of Pol I stalling at abasic sites, differing from arrest by bulky lesions or abasic site handling by RNA polymerase II. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 85.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 38.4 KB 38.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.3 KB | Display | ![]() |
Images | ![]() | 159.2 KB | ||
Masks | ![]() | 91.1 MB | ![]() | |
Filedesc metadata | ![]() | 10.3 KB | ||
Others | ![]() ![]() ![]() | 71.2 MB 71.4 MB 71.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9g2cMC ![]() 9g1vC ![]() 9g1xC ![]() 9g23C ![]() 9g24C ![]() 9g26C ![]() 9g27C ![]() 9g29C ![]() 9g2bC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Cryo-EM sharpened map of 12-subunit RNA polymerase I | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.047 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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Density Histograms |
-Additional map: Cryo-EM unsharpened map of 12-subunit RNA polymerase I
File | emd_50972_additional_1.map | ||||||||||||
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Annotation | Cryo-EM unsharpened map of 12-subunit RNA polymerase I | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map A
File | emd_50972_half_map_1.map | ||||||||||||
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Annotation | Half map A | ||||||||||||
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Density Histograms |
-Half map: Half map B
File | emd_50972_half_map_2.map | ||||||||||||
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Annotation | Half map B | ||||||||||||
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Density Histograms |
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Sample components
+Entire : RNA polymerase I and DNA and RNA
+Supramolecule #1: RNA polymerase I and DNA and RNA
+Supramolecule #2: RNA polymerase I
+Supramolecule #3: DNA and RNA
+Macromolecule #1: DNA-directed RNA polymerase I subunit RPA190
+Macromolecule #2: DNA-directed RNA polymerase I subunit RPA135
+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 polymerase I subunit RPA43
+Macromolecule #7: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #8: DNA-directed RNA polymerase I subunit RPA12
+Macromolecule #9: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #10: DNA-directed RNA polymerases I and III subunit RPAC2
+Macromolecule #11: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #12: DNA-directed RNA polymerase I subunit RPA49
+Macromolecule #13: DNA-directed RNA polymerase I subunit RPA34
+Macromolecule #14: RNA
+Macromolecule #15: Non-template DNA
+Macromolecule #16: Template DNA
+Macromolecule #17: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: METHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 40.1 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.5 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |