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- PDB-7dok: Structure of COVID-19 RNA-dependent RNA polymerase (extended conf... -

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Entry
Database: PDB / ID: 7dok
TitleStructure of COVID-19 RNA-dependent RNA polymerase (extended conformation) bound to penciclovir
Components
  • (Non-structural protein ...) x 2
  • RNA (5'-R(P*CP*CP*CP*UP*AP*UP*AP*AP*CP*UP*UP*AP*AP*UP*CP*UP*CP*AP*CP*AP*UP*AP*GP*C)-3')
  • RNA (5'-R(P*GP*CP*UP*AP*UP*GP*UP*GP*AP*GP*AP*UP*UP*AP*AP*GP*UP*UP*AP*U)-3')
  • RNA-directed RNA polymerase
KeywordsVIRAL PROTEIN / COVID-19 / RNA polymerase in extended conformation / penciclovir binding
Function / homology
Function and homology information


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 ...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 / snRNP Assembly / Translation of Replicase and Assembly of the Replication Transcription Complex / 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
Nsp8 replicase, head domain / RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / Nonstructural protein 15, middle domain, alpha/betacoronavirus / Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirus / NSP14, guanine-N7-methyltransferase domain, coronavirus / Coronavirus (CoV) guanine-N7-methyltransferase (N7-MTase) domain profile. / Coronavirus (CoV) Nsp15 N-terminal oligomerization domain profile. / NSP12 RNA-dependent RNA polymerase, coronavirus ...Nsp8 replicase, head domain / RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / Nonstructural protein 15, middle domain, alpha/betacoronavirus / Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirus / NSP14, guanine-N7-methyltransferase domain, coronavirus / Coronavirus (CoV) guanine-N7-methyltransferase (N7-MTase) domain profile. / Coronavirus (CoV) Nsp15 N-terminal oligomerization domain profile. / NSP12 RNA-dependent RNA polymerase, coronavirus / : / Coronavirus Nsp12 RNA-dependent RNA polymerase (RdRp) domain profile. / Coronavirus Nsp12 Interface domain profile. / : / : / Coronavirus Nonstructural protein 13, 1B domain / Coronavirus Non-structural protein 13, zinc-binding domain / Coronavirus Nonstructural protein 13, stalk domain / Nidovirus 2-O-methyltransferase / Nidovirus 2'-O-methyltransferase (2'-O-MTase) domain profile. / Non-structural protein NSP15, N-terminal domain superfamily, coronavirus / Non-structural protein NSP15, middle domain superfamily / Coronavirus replicase NSP15, N-terminal oligomerization / Nonstructural protein 15, middle domain, coronavirus / Nonstructural protein 13, 1B domain, coronavirus / Coronavirus replicase NSP15, middle domain / Coronavirus replicase NSP15, N-terminal oligomerisation / Nidovirus 3'-5' exoribonuclease domain / Nidovirus 3'-5' exoribonuclease (ExoN) domain profile. / Non-structural protein NSP16, coronavirus-like / Non-structural protein 14, coronavirus / RNA polymerase, N-terminal, coronavirus / Coronavirus 2'-O-methyltransferase / Coronavirus proofreading exoribonuclease / Coronavirus RNA-dependent RNA polymerase, N-terminal / Nonstructural protein 13, zinc-binding domain, coronavirus-like / Coronaviridae zinc-binding (CV ZBD) domain profile. / Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domain / Arterivirus Nsp11 N-terminal/coronavirus NSP15 middle (AV-Nsp11N/CoV-Nsp15M) domain profile. / Nidoviral uridylate-specific endoribonuclease (NendoU) domain profile. / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain profile. / Endoribonuclease EndoU-like / NendoU domain, nidovirus / Coronavirus replicase NSP15, uridylate-specific endoribonuclease / : / Lipocalin signature. / DNA2/NAM7 helicase-like, C-terminal / AAA domain / (+) RNA virus helicase core domain / (+)RNA virus helicase core domain profile. / Non-structural protein NSP3, SUD-N (Mac2) domain, betacoronavirus / Sarbecovirus Nsp3c-N domain profile. / Non-structural protein NSP3, N-terminal, betacoronavirus / Polyprotein cleavage domain PL2pro superfamily, betacoronavirus / Non-structural protein NSP3, SUD-N (Mac2) domain superfamily, betacoronavirus / Betacoronavirus SUD-C domain / Betacoronavirus replicase NSP3, N-terminal / NSP1 globular domain superfamily, betacoronavirus / Non-structural protein 2, SARS-CoV-like / Carbamoyl-phosphate synthase subdomain signature 2. / Betacoronavirus Nsp3c-M domain profile. / NSP1, globular domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain superfamily, betacoronavirus / Betacoronavirus replicase NSP1 / Betacoronavirus single-stranded poly(A) binding domain / NSP1, C-terminal domain, betacoronavirus / : / Betacoronavirus (BetaCoV) Nsp1 C-terminal domain profile. / Betacoronavirus Nsp3e group 2-specific marker (G2M) domain profile. / Betacoronavirus Nsp3c-C domain profile. / Betacoronavirus Nsp3e nucleic acid-binding (NAB) domain profile. / DPUP/SUD, C-terminal, betacoronavirus / Non-structural protein NSP3, nucleic acid-binding domain, betacoronavirus / Non-structural protein NSP3A domain-like superfamily / Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirus / Non-structural protein 6, betacoronavirus / Betacoronavirus nucleic acid-binding (NAB) / Papain-like viral protease, palm and finger domains, coronavirus / Papain-like protease, N-terminal domain superfamily, coronavirus / Coronavirus replicase NSP2, N-terminal / : / Coronavirus replicase NSP2, C-terminal / Coronavirus (CoV) Nsp2 middle domain profile. / NSP1, globular domain, alpha/betacoronavirus / Coronavirus (CoV) Nsp1 globular domain profile. / Coronavirus (CoV) Nsp2 N-terminal domain profile. / Coronavirus (CoV) Nsp2 C-terminal domain profile. / Nonstructural protein 2, N-terminal domain, coronavirus / Non-structural protein 2, C-terminal domain, coronavirus / NSP3, second ubiquitin-like (Ubl) domain, coronavirus / Coronavirus Nsp3a Ubl domain profile. / Coronavirus Nsp3d Ubl domain profile. / NSP3, first ubiquitin-like (Ubl) domain, coronavirus / Peptidase family C16 domain profile. / : / : / Coronavirus replicase NSP7 / Coronavirus 3Ecto domain profile.
Similarity search - Domain/homology
Chem-HCU / PYROPHOSPHATE 2- / RNA / RNA (> 10) / Replicase polyprotein 1ab
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.73 Å
AuthorsLi, Z. / Yu, X.
CitationJournal: To Be Published
Title: Structural basis for repurpose and design of nucleotide drugs for treating COVID-19
Authors: Yin, W. / Luan, X. / Li, Z. / Xie, Y. / Zhou, Z. / Liu, J. / Gao, M. / Wang, X. / Zhou, F. / Wang, Q. / Wang, Q. / Shen, D. / Zhang, Y. / Tian, G. / Aisa, H. / Wei, D. / Jiang, Y. / Xiao, G. ...Authors: Yin, W. / Luan, X. / Li, Z. / Xie, Y. / Zhou, Z. / Liu, J. / Gao, M. / Wang, X. / Zhou, F. / Wang, Q. / Wang, Q. / Shen, D. / Zhang, Y. / Tian, G. / Aisa, H. / Wei, D. / Jiang, Y. / Xiao, G. / Jiang, H. / Zhang, L. / Yu, X. / Shen, J. / Zhang, S. / Xu, H.
History
DepositionDec 14, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Dec 15, 2021Provider: repository / Type: Initial release
Revision 1.0Dec 15, 2021Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Dec 15, 2021Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Dec 15, 2021Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Dec 15, 2021Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Dec 15, 2021Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Jun 5, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
Revision 1.2Jul 2, 2025Group: Data collection / Structure summary / Category: em_admin / em_software / pdbx_entry_details
Item: _em_admin.last_update / _em_software.name / _pdbx_entry_details.has_protein_modification
Revision 1.1Jul 2, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

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Assembly

Deposited unit
P: RNA (5'-R(P*GP*CP*UP*AP*UP*GP*UP*GP*AP*GP*AP*UP*UP*AP*AP*GP*UP*UP*AP*U)-3')
T: RNA (5'-R(P*CP*CP*CP*UP*AP*UP*AP*AP*CP*UP*UP*AP*AP*UP*CP*UP*CP*AP*CP*AP*UP*AP*GP*C)-3')
A: RNA-directed RNA polymerase
B: Non-structural protein 8
C: Non-structural protein 7
G: Non-structural protein 8
hetero molecules


Theoretical massNumber of molelcules
Total (without water)176,25615
Polymers175,3436
Non-polymers9139
Water362
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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RNA chain , 2 types, 2 molecules PT

#1: RNA chain RNA (5'-R(P*GP*CP*UP*AP*UP*GP*UP*GP*AP*GP*AP*UP*UP*AP*AP*GP*UP*UP*AP*U)-3')


Mass: 6410.816 Da / Num. of mol.: 1 / Source method: obtained synthetically
Source: (synth.) Severe acute respiratory syndrome coronavirus 2
#2: RNA chain RNA (5'-R(P*CP*CP*CP*UP*AP*UP*AP*AP*CP*UP*UP*AP*AP*UP*CP*UP*CP*AP*CP*AP*UP*AP*GP*C)-3')


Mass: 7518.510 Da / Num. of mol.: 1 / Source method: obtained synthetically
Source: (synth.) Severe acute respiratory syndrome coronavirus 2

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Protein , 1 types, 1 molecules A

#3: Protein RNA-directed RNA polymerase / Non-structural protein 12


Mass: 107965.250 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: rep, 1a-1b / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P0DTD1, RNA-directed RNA polymerase

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Non-structural protein ... , 2 types, 3 molecules BGC

#4: Protein Non-structural protein 8


Mass: 22034.242 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: rep, 1a-1b / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P0DTD1
#5: Protein Non-structural protein 7


Mass: 9380.000 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: rep, 1a-1b / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P0DTD1

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Non-polymers , 5 types, 11 molecules

#6: Chemical ChemComp-HCU / [(2R)-4-(2-azanyl-6-oxidanylidene-3H-purin-9-yl)-2-(hydroxymethyl)butyl] dihydrogen phosphate / Penciclovir phosphate


Mass: 333.238 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O6P
#7: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#8: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#9: Chemical ChemComp-POP / PYROPHOSPHATE 2-


Mass: 175.959 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: H2O7P2
#10: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: COVID-19 RdRp complex (exntended conformation) bound to penciclovir
Type: COMPLEX / Entity ID: #2-#5 / Source: RECOMBINANT
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 68 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.14_3260: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.73 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 139773 / Symmetry type: POINT

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