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Yorodumi- PDB-6m71: SARS-Cov-2 RNA-dependent RNA polymerase in complex with cofactors -
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Open data
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Basic information
| Entry | Database: PDB / ID: 6m71 | |||||||||||||||
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| Title | SARS-Cov-2 RNA-dependent RNA polymerase in complex with cofactors | |||||||||||||||
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Keywords | VIRAL PROTEIN / COVID-19 / 2019-nCoV / SARS-CoV-2 / Virus / RdRp / nsp12 / nsp7 / nsp8 / RTC / cryo-EM / RNA polymerase / drug target / antiviral / replication transcription complex | |||||||||||||||
| Function / homology | Function and homology informationprotein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Maturation of replicase proteins / TRAF3-dependent IRF activation pathway / ISG15-specific peptidase activity ...protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Maturation of replicase proteins / TRAF3-dependent IRF activation pathway / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / Translation of Replicase and Assembly of the Replication Transcription Complex / snRNP Assembly / Replication of the SARS-CoV-2 genome / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / host cell endoplasmic reticulum-Golgi intermediate compartment / double membrane vesicle viral factory outer membrane / SARS coronavirus main proteinase / 5'-3' DNA helicase activity / 3'-5'-RNA exonuclease activity / host cell endosome / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / symbiont-mediated suppression of host toll-like receptor signaling pathway / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / SARS-CoV-2 modulates host translation machinery / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / host cell Golgi apparatus / symbiont-mediated suppression of host NF-kappaB cascade / symbiont-mediated perturbation of host ubiquitin-like protein modification / DNA helicase / methyltransferase cap1 activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / regulation of autophagy / host cell perinuclear region of cytoplasm / viral protein processing / lyase activity / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host gene expression / copper ion binding / viral translational frameshifting / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / lipid binding / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding / membrane Similarity search - Function | |||||||||||||||
| Biological species | ![]() | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||||||||
Authors | Gao, Y. / Yan, L. / Huang, Y. / Liu, F. / Cao, L. / Wang, T. / Wang, Q. / Lou, Z. / Rao, Z. | |||||||||||||||
| Funding support | China, 4items
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Citation | Journal: Science / Year: 2020Title: Structure of the RNA-dependent RNA polymerase from COVID-19 virus. Authors: Yan Gao / Liming Yan / Yucen Huang / Fengjiang Liu / Yao Zhao / Lin Cao / Tao Wang / Qianqian Sun / Zhenhua Ming / Lianqi Zhang / Ji Ge / Litao Zheng / Ying Zhang / Haofeng Wang / Yan Zhu / ...Authors: Yan Gao / Liming Yan / Yucen Huang / Fengjiang Liu / Yao Zhao / Lin Cao / Tao Wang / Qianqian Sun / Zhenhua Ming / Lianqi Zhang / Ji Ge / Litao Zheng / Ying Zhang / Haofeng Wang / Yan Zhu / Chen Zhu / Tianyu Hu / Tian Hua / Bing Zhang / Xiuna Yang / Jun Li / Haitao Yang / Zhijie Liu / Wenqing Xu / Luke W Guddat / Quan Wang / Zhiyong Lou / Zihe Rao / ![]() Abstract: A novel coronavirus [severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2)] outbreak has caused a global coronavirus disease 2019 (COVID-19) pandemic, resulting in tens of thousands of ...A novel coronavirus [severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2)] outbreak has caused a global coronavirus disease 2019 (COVID-19) pandemic, resulting in tens of thousands of infections and thousands of deaths worldwide. The RNA-dependent RNA polymerase [(RdRp), also named nsp12] is the central component of coronaviral replication and transcription machinery, and it appears to be a primary target for the antiviral drug remdesivir. We report the cryo-electron microscopy structure of COVID-19 virus full-length nsp12 in complex with cofactors nsp7 and nsp8 at 2.9-angstrom resolution. In addition to the conserved architecture of the polymerase core of the viral polymerase family, nsp12 possesses a newly identified β-hairpin domain at its N terminus. A comparative analysis model shows how remdesivir binds to this polymerase. The structure provides a basis for the design of new antiviral therapeutics that target viral RdRp. | |||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6m71.cif.gz | 208.4 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb6m71.ent.gz | 159 KB | Display | PDB format |
| PDBx/mmJSON format | 6m71.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6m71_validation.pdf.gz | 1.4 MB | Display | wwPDB validaton report |
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| Full document | 6m71_full_validation.pdf.gz | 1.4 MB | Display | |
| Data in XML | 6m71_validation.xml.gz | 40.5 KB | Display | |
| Data in CIF | 6m71_validation.cif.gz | 59.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/m7/6m71 ftp://data.pdbj.org/pub/pdb/validation_reports/m7/6m71 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 30127MC ![]() 7btfC 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
| #1: Protein | Mass: 108162.461 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: rep, 1a-1b / Plasmid: pET-22a / Details (production host): none / Production host: ![]() | ||
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| #2: Protein | Mass: 9248.804 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: rep, 1a-1b / Production host: ![]() | ||
| #3: Protein | Mass: 21903.047 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: rep, 1a-1b / Production host: ![]() Has protein modification | Y | |
-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: SARS-CoV-2 RNA-dependent RNA polymerase in complex with cofactors Type: COMPLEX Details: The bacterially expressed full-length SARS-CoV-2 nsp12 (residues S1-Q932) was incubated with nsp7 (residues S1-Q83) and nsp8 (residues A1-Q198), and the complex was then purified Entity ID: all / Source: RECOMBINANT | ||||||||||||||||||||
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| Molecular weight | Value: 0.155 MDa / Experimental value: YES | ||||||||||||||||||||
| Source (natural) | Organism: ![]() | ||||||||||||||||||||
| Source (recombinant) | Organism: ![]() | ||||||||||||||||||||
| Buffer solution | pH: 7.5 Details: Solutions were made fresh from concentrated to avoid microbial contamination. | ||||||||||||||||||||
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| Specimen | Conc.: 0.7 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: This sample was mono disperse. | ||||||||||||||||||||
| Specimen support | Details: None. / Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 281 K / Details: blot for 3 seconds before plunging. |
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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 / Details: Preliminary grid screening was performed manually. |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 165000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Calibrated defocus min: 1000 nm / Calibrated defocus max: 2000 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 / Temperature (max): 78.6 K / Temperature (min): 78.5 K / Residual tilt: 10 mradians |
| Image recording | Average exposure time: 5 sec. / Electron dose: 60 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 7994 Details: Images were collected in movie-mode at 8 frames per second. |
| EM imaging optics | Energyfilter name: GIF Bioquantum / Chromatic aberration corrector: NONE / Energyfilter slit width: 30 eV / Phase plate: VOLTA PHASE PLATE / Spherical aberration corrector: NONE |
| Image scans | Sampling size: 2.5 µm / Width: 3838 / Height: 3710 / Movie frames/image: 40 / Used frames/image: 2-40 |
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Processing
| Software | Name: PHENIX / Version: 1.16_3549: / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||
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| EM software |
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| Image processing | Details: The selected images were normalized. | |||||||||||||||||||||||||||||||||||||||||||||
| CTF correction | Details: The CTF correction was done by patch CTF correction. Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 2334248 Details: The particles were automatically selected using blob pickier (diameter range from 100 angstroms to 150 angstroms) | |||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 110176 / Algorithm: FOURIER SPACE Details: The particle set was used to perform homogeneous refinement, yielding a resolution of 3.1-angstrom. After local refinement, the final resolution reached 2.9-angstrom. Num. of class averages: 1 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | B value: 65 / Protocol: RIGID BODY FIT / Space: REAL / Target criteria: correlation coefficient Details: After the corresponding amino acids were replaced with those from 2019-nCoV, the model was manually built in Coot with the guidance of the cryo-EM map, and in combination with real space refinement with Phenix. | |||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | 3D fitting-ID: 1 / Accession code: 6NUR / Initial refinement model-ID: 1 / PDB-ID: 6NUR / Source name: PDB / Type: experimental model
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| Refinement | Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | |||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 64.82 Å2 | |||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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