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Yorodumi- EMDB-24427: SARS-CoV-2 replication-transcription complex bound to nsp13 helic... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-24427 | |||||||||
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Title | SARS-CoV-2 replication-transcription complex bound to nsp13 helicase - nsp13(2)-RTC - engaged class | |||||||||
Map data | ||||||||||
Sample |
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Keywords | RNA-dependent RNA polymerase / viral replication-transcription complex / transcription / viral proteins / REPLICATION-TRANSCRIPTION complex | |||||||||
Function / homology | Function and homology information protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs ...protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / TRAF3-dependent IRF activation pathway / Translation of Replicase and Assembly of the Replication Transcription Complex / Replication of the SARS-CoV-2 genome / snRNP Assembly / double membrane vesicle viral factory outer membrane / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / SARS coronavirus main proteinase / host cell endoplasmic reticulum-Golgi intermediate compartment / 3'-5'-RNA exonuclease activity / 5'-3' DNA helicase activity / symbiont-mediated suppression of host NF-kappaB cascade / host cell endosome / symbiont-mediated suppression of host toll-like receptor signaling pathway / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / mRNA (guanine-N7)-methyltransferase / omega peptidase activity / methyltransferase cap1 / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / SARS-CoV-2 modulates host translation machinery / host cell Golgi apparatus / symbiont-mediated perturbation of host ubiquitin-like protein modification / DNA helicase / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / host cell perinuclear region of cytoplasm / single-stranded RNA binding / host cell endoplasmic reticulum membrane / viral protein processing / lyase activity / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / induction by virus of host autophagy / copper ion binding / RNA-directed RNA polymerase / viral translational frameshifting / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / lipid binding / DNA-templated transcription / 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 | Severe acute respiratory syndrome coronavirus 2 / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Chen J / Malone B | |||||||||
Funding support | United States, 1 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2022 Title: Ensemble cryo-EM reveals conformational states of the nsp13 helicase in the SARS-CoV-2 helicase replication-transcription complex. Authors: James Chen / Qi Wang / Brandon Malone / Eliza Llewellyn / Yakov Pechersky / Kashyap Maruthi / Ed T Eng / Jason K Perry / Elizabeth A Campbell / David E Shaw / Seth A Darst / Abstract: The SARS-CoV-2 nonstructural proteins coordinate genome replication and gene expression. Structural analyses revealed the basis for coupling of the essential nsp13 helicase with the RNA-dependent RNA ...The SARS-CoV-2 nonstructural proteins coordinate genome replication and gene expression. Structural analyses revealed the basis for coupling of the essential nsp13 helicase with the RNA-dependent RNA polymerase (RdRp) where the holo-RdRp and RNA substrate (the replication-transcription complex or RTC) associated with two copies of nsp13 (nsp13-RTC). One copy of nsp13 interacts with the template-RNA in an opposing polarity to the RdRp and is envisaged to drive the RdRp backward on the RNA template (backtracking), prompting questions as to how the RdRp can efficiently synthesize RNA in the presence of nsp13. Here we use cryogenic-electron microscopy and molecular dynamics simulations to analyze the nsp13-RTC, revealing four distinct conformational states of the helicases. The results indicate a mechanism for the nsp13-RTC to turn backtracking on and off, using an allosteric mechanism to switch between RNA synthesis or backtracking in response to stimuli at the RdRp active site. #1: Journal: Biorxiv / Year: 2021 Title: Ensemble cryo-electron microscopy reveals conformational states of the nsp13 helicase in the SARS-CoV-2 helicase replication-transcription complex Authors: Chen J / Wang Q / Malone B / Llewellyn E / Pechersky Y / Maruthi K / Eng ET / Perry JK / Campbell EA / Shaw DE / Darst SA | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_24427.map.gz | 111.1 MB | EMDB map data format | |
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Header (meta data) | emd-24427-v30.xml emd-24427.xml | 20.7 KB 20.7 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_24427_fsc.xml | 11.2 KB | Display | FSC data file |
Images | emd_24427.png | 103.7 KB | ||
Filedesc metadata | emd-24427.cif.gz | 7.1 KB | ||
Others | emd_24427_additional_1.map.gz | 11.8 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-24427 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-24427 | HTTPS FTP |
-Validation report
Summary document | emd_24427_validation.pdf.gz | 525.4 KB | Display | EMDB validaton report |
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Full document | emd_24427_full_validation.pdf.gz | 525 KB | Display | |
Data in XML | emd_24427_validation.xml.gz | 12.5 KB | Display | |
Data in CIF | emd_24427_validation.cif.gz | 16.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24427 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24427 | HTTPS FTP |
-Related structure data
Related structure data | 7rdyMC 7rdxC 7rdzC 7re0C 7re1C 7re2C 7re3C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_24427.map.gz / Format: CCP4 / Size: 125 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: 1.07 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: local resolution filtered map
File | emd_24427_additional_1.map | ||||||||||||
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Annotation | local resolution filtered map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : SARS-CoV-2 replication-transcription complex bound to nsp13 helic...
+Supramolecule #1: SARS-CoV-2 replication-transcription complex bound to nsp13 helic...
+Macromolecule #1: RNA-directed RNA polymerase
+Macromolecule #2: Non-structural protein 8
+Macromolecule #3: Non-structural protein 7
+Macromolecule #4: Helicase
+Macromolecule #5: Product RNA
+Macromolecule #6: Template RNA
+Macromolecule #7: ZINC ION
+Macromolecule #8: MAGNESIUM ION
+Macromolecule #9: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #10: CHAPSO
+Macromolecule #11: ALUMINUM FLUORIDE
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 65.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |