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Open data
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Basic information
Entry | Database: PDB / ID: 6o6c | |||||||||
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Title | RNA polymerase II elongation complex arrested at a CPD lesion | |||||||||
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![]() | TRANSFERASE/DNA/RNA / RNA polymerase / CPD / elongation complex / streptavidin grids / transcription / transferase-DNA-RNA complex | |||||||||
Function / homology | ![]() 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 / termination of RNA polymerase II transcription / RNA Polymerase II Promoter Escape ...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 / termination of RNA polymerase II transcription / 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 / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / Formation of TC-NER Pre-Incision Complex / termination of RNA polymerase III transcription / RNA Polymerase I Promoter Escape / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / 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 / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / transcription by RNA polymerase I / transcription by RNA polymerase III / Dual incision in TC-NER / RNA polymerase I complex / tRNA transcription by RNA polymerase III / translesion synthesis / RNA polymerase III complex / transcription elongation by RNA polymerase I / transcription-coupled nucleotide-excision repair / RNA polymerase II, core complex / : / DNA-directed RNA polymerase activity / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / cytoplasmic stress granule / peroxisome / ribosome biogenesis / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / mRNA binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Lahiri, I. / Leshziner, A.E. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: 3.1 Å structure of yeast RNA polymerase II elongation complex stalled at a cyclobutane pyrimidine dimer lesion solved using streptavidin affinity grids. Authors: Indrajit Lahiri / Jun Xu / Bong Gyoon Han / Juntaek Oh / Dong Wang / Frank DiMaio / Andres E Leschziner / ![]() Abstract: Despite significant advances in all aspects of single particle cryo-electron microscopy (cryo-EM), specimen preparation still remains a challenge. During sample preparation, macromolecules interact ...Despite significant advances in all aspects of single particle cryo-electron microscopy (cryo-EM), specimen preparation still remains a challenge. During sample preparation, macromolecules interact with the air-water interface, which often leads to detrimental effects such as denaturation or adoption of preferred orientations, ultimately hindering structure determination. Randomly biotinylating the protein of interest (for example, at its primary amines) and then tethering it to a cryo-EM grid coated with two-dimensional crystals of streptavidin (acting as an affinity surface) can prevent the protein from interacting with the air-water interface. Recently, this approach was successfully used to solve a high-resolution structure of a test sample, a bacterial ribosome. However, whether this method can be used for samples where interaction with the air-water interface has been shown to be problematic remains to be determined. Here we report a 3.1 Å structure of an RNA polymerase II elongation complex stalled at a cyclobutane pyrimidine dimer lesion (Pol II EC(CPD)) solved using streptavidin grids. Our previous attempt to solve this structure using conventional sample preparation methods resulted in a poor quality cryo-EM map due to Pol II EC(CPD)'s adopting a strong preferred orientation. Imaging the same sample on streptavidin grids improved the angular distribution of its view, resulting in a high-resolution structure. This work shows that streptavidin affinity grids can be used to address known challenges posed by the interaction with the air-water interface. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 774.9 KB | Display | ![]() |
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PDB format | ![]() | 611.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 910 KB | Display | ![]() |
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Full document | ![]() | 936 KB | Display | |
Data in XML | ![]() | 92.9 KB | Display | |
Data in CIF | ![]() | 145 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 0633MC 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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Components
-DNA-directed RNA polymerase II subunit ... , 5 types, 5 molecules ABCGI
#1: Protein | Mass: 191821.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 138937.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#3: Protein | Mass: 35330.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#7: Protein | Mass: 14308.161 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#9: Protein | Mass: 13633.493 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 DEFHJ
#4: Protein | Mass: 25117.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#5: Protein | Mass: 17931.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#6: Protein | Mass: 16525.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#8: Protein | Mass: 8290.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#10: Protein | Mass: 7729.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-RNA chain , 1 types, 1 molecules K
#11: RNA chain | Mass: 2934.831 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
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-DNA chain , 2 types, 2 molecules LM
#12: DNA chain | Mass: 5046.293 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
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#13: DNA chain | Mass: 8376.361 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
-Non-polymers , 2 types, 9 molecules 


#14: Chemical | ChemComp-ZN / #15: Chemical | ChemComp-MG / | |
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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 polymerase II elongation complex stalled at a CPD lesion Type: COMPLEX / Entity ID: #1-#13 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: The grids had a monolayer of streptavidin crystals on them. Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/2 |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 293.15 K Details: The sample was manually wicked from the grid. 1.2 uL sample buffer was then applied to the streptavidin side. The grid was then blotted. |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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Microscopy | Model: FEI TALOS ARCTICA |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Cs: 2.7 mm |
Image recording | Average exposure time: 6 sec. / Electron dose: 51.7 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 61654 / Algorithm: FOURIER SPACE / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL |