7UO9

SARS-CoV-2 replication-transcription complex bound to UTP, in a pre-catalytic state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.13 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural basis for substrate selection by the SARS-CoV-2 replicase.

Malone, B.F.Perry, J.K.Olinares, P.D.B.Lee, H.W.Chen, J.Appleby, T.C.Feng, J.Y.Bilello, J.P.Ng, H.Sotiris, J.Ebrahim, M.Chua, E.Y.D.Mendez, J.H.Eng, E.T.Landick, R.Gotte, M.Chait, B.T.Campbell, E.A.Darst, S.A.

(2023) Nature 614: 781-787

  • DOI: https://doi.org/10.1038/s41586-022-05664-3
  • Primary Citation of Related Structures:  
    7UO4, 7UO7, 7UO9, 7UOB, 7UOE

  • PubMed Abstract: 

    The SARS-CoV-2 RNA-dependent RNA polymerase coordinates viral RNA synthesis as part of an assembly known as the replication-transcription complex (RTC) 1 . Accordingly, the RTC is a target for clinically approved antiviral nucleoside analogues, including remdesivir 2 . Faithful synthesis of viral RNAs by the RTC requires recognition of the correct nucleotide triphosphate (NTP) for incorporation into the nascent RNA. To be effective inhibitors, antiviral nucleoside analogues must compete with the natural NTPs for incorporation. How the SARS-CoV-2 RTC discriminates between the natural NTPs, and how antiviral nucleoside analogues compete, has not been discerned in detail. Here, we use cryogenic-electron microscopy to visualize the RTC bound to each of the natural NTPs in states poised for incorporation. Furthermore, we investigate the RTC with the active metabolite of remdesivir, remdesivir triphosphate (RDV-TP), highlighting the structural basis for the selective incorporation of RDV-TP over its natural counterpart adenosine triphosphate 3,4 . Our results explain the suite of interactions required for NTP recognition, informing the rational design of antivirals. Our analysis also yields insights into nucleotide recognition by the nsp12 NiRAN (nidovirus RdRp-associated nucleotidyltransferase), an enigmatic catalytic domain essential for viral propagation 5 . The NiRAN selectively binds guanosine triphosphate, strengthening proposals for the role of this domain in the formation of the 5' RNA cap 6 .


  • Organizational Affiliation

    Laboratory of Molecular Biophysics, The Rockefeller University, New York, NY, USA.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RNA-directed RNA polymerase932Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
EC: 2.7.7.48
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTD1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Non-structural protein 8B,
F [auth D]
198Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTD1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Non-structural protein 792Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTD1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains LengthOrganismImage
Product RNA (35-MER)D [auth P]35synthetic construct
Sequence Annotations
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  • Reference Sequence
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Entity ID: 5
MoleculeChains LengthOrganismImage
Template RNA (55-MER)E [auth T]55synthetic construct
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.13 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI161278

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-30
    Type: Initial release
  • Version 1.1: 2023-02-01
    Changes: Database references
  • Version 1.2: 2023-02-15
    Changes: Database references
  • Version 1.3: 2023-03-08
    Changes: Database references
  • Version 1.4: 2024-06-12
    Changes: Data collection