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Open data
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Basic information
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| Title | SARS-CoV-2 RNA E-RTC complex with RMP-nsp9 and GMPPNP | |||||||||
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Keywords | SARS-CoV-2 / capping / nucleotide analogue inhibitor / cryo-EM / VIRAL PROTEIN / VIRAL PROTEIN-INHIBITOR complex | |||||||||
| Function / homology | Function and homology informationviral genome replication / methyltransferase 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 ...viral genome replication / methyltransferase 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 / endonuclease 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 / methylation / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / mRNA (guanine-N7)-methyltransferase / SARS-CoV-2 modulates host translation machinery / 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 | single particle reconstruction / cryo EM / Resolution: 2.72 Å | |||||||||
Authors | Yan LM / Huang YC / Ge J / Liu ZY / Gao Y / Rao ZH / Lou ZY | |||||||||
| Funding support | China, 2 items
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Citation | Journal: Cell / Year: 2022Title: A mechanism for SARS-CoV-2 RNA capping and its inhibition by nucleotide analog inhibitors. Authors: Liming Yan / Yucen Huang / Ji Ge / Zhenyu Liu / Pengchi Lu / Bo Huang / Shan Gao / Junbo Wang / Liping Tan / Sihan Ye / Fengxi Yu / Weiqi Lan / Shiya Xu / Feng Zhou / Lei Shi / Luke W Guddat ...Authors: Liming Yan / Yucen Huang / Ji Ge / Zhenyu Liu / Pengchi Lu / Bo Huang / Shan Gao / Junbo Wang / Liping Tan / Sihan Ye / Fengxi Yu / Weiqi Lan / Shiya Xu / Feng Zhou / Lei Shi / Luke W Guddat / Yan Gao / Zihe Rao / Zhiyong Lou / ![]() Abstract: Decoration of cap on viral RNA plays essential roles in SARS-CoV-2 proliferation. Here, we report a mechanism for SARS-CoV-2 RNA capping and document structural details at atomic resolution. The ...Decoration of cap on viral RNA plays essential roles in SARS-CoV-2 proliferation. Here, we report a mechanism for SARS-CoV-2 RNA capping and document structural details at atomic resolution. The NiRAN domain in polymerase catalyzes the covalent link of RNA 5' end to the first residue of nsp9 (termed as RNAylation), thus being an intermediate to form cap core (GpppA) with GTP catalyzed again by NiRAN. We also reveal that triphosphorylated nucleotide analog inhibitors can be bonded to nsp9 and fit into a previously unknown "Nuc-pocket" in NiRAN, thus inhibiting nsp9 RNAylation and formation of GpppA. S-loop (residues 50-KTN-52) in NiRAN presents a remarkable conformational shift observed in RTC bound with sofosbuvir monophosphate, reasoning an "induce-and-lock" mechanism to design inhibitors. These findings not only improve the understanding of SARS-CoV-2 RNA capping and the mode of action of NAIs but also provide a strategy to design antiviral drugs. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_34314.map.gz | 324.1 MB | EMDB map data format | |
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| Header (meta data) | emd-34314-v30.xml emd-34314.xml | 25.5 KB 25.5 KB | Display Display | EMDB header |
| Images | emd_34314.png | 42.3 KB | ||
| Filedesc metadata | emd-34314.cif.gz | 8 KB | ||
| Others | emd_34314_half_map_1.map.gz emd_34314_half_map_2.map.gz | 318.7 MB 318.7 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-34314 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34314 | HTTPS FTP |
-Validation report
| Summary document | emd_34314_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_34314_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_34314_validation.xml.gz | 17.1 KB | Display | |
| Data in CIF | emd_34314_validation.cif.gz | 20.4 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-34314 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-34314 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8gwkMC ![]() 8gw1C ![]() 8gwbC ![]() 8gweC ![]() 8gwfC ![]() 8gwgC ![]() 8gwiC ![]() 8gwmC ![]() 8gwnC ![]() 8gwoC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_34314.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.96 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_34314_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_34314_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : E-RTC_RMP-nsp9_GMPPNP
+Supramolecule #1: E-RTC_RMP-nsp9_GMPPNP
+Macromolecule #1: RNA-directed RNA polymerase
+Macromolecule #2: Non-structural protein 8
+Macromolecule #3: Non-structural protein 7
+Macromolecule #6: Helicase
+Macromolecule #7: Non-structural protein 9
+Macromolecule #4: primer
+Macromolecule #5: template
+Macromolecule #8: ZINC ION
+Macromolecule #9: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: [(2~{R},3~{S},4~{R},5~{R})-5-(4-azanylpyrrolo[2,1-f][1,2,4]triazi...
+Macromolecule #12: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 60.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Keywords
Authors
China, 2 items
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Processing
FIELD EMISSION GUN
