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CoV RNA-dependent RNA polymerase

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Target not currently curated in GtoImmuPdb

Target id: 3139

Nomenclature: CoV RNA-dependent RNA polymerase

Family: Coronavirus (CoV) proteins

Gene and Protein Information Click here for help
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Gene and Protein Information Comments
SARS-CoV RdRp is a 932 amino acid protein that is amino acids 4370-5301 of the polyprotein encoded by Orf1b.
SARS-CoV-2 RdRp is a 932 amino acid protein that is amino acids 4393-5324 of the polyprotein encoded by Orf1b.
Previous and Unofficial Names Click here for help
non-structural protein 12 | nsp12
Database Links Click here for help
ChEMBL Target
UniProtKB

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Inhibitors
Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
remdesivir Small molecule or natural product Approved drug SARS-CoV-2 Inhibition - - 1
[1]
remdesivir Small molecule or natural product Approved drug Click here for species-specific activity table SARS-CoV Inhibition - - 1
[1]
View species-specific inhibitor tables
General Comments
Although RdRp is strictly a component of the SARS-CoV-2 replicase polyprotein we have included it as a separate entity to allow us to more sensibly curate pharmacological information (particularly regarding inhibitor development) that is specific for this enzyme. RdRP functions as a component of a genome replication protein complex that also contains nsp7 and nsp8 [2-3]. RdRP-mediated replication can be primer-dependent, but RdRp is also capable of de novo (primer-independent) RNA synthesis. Because of the conserved structure of the key drug-binding pockets between SARS-CoV-2, SARS-CoV, and MERS-CoV RdRPs, repurposing known SARS-CoV and MERS-CoV inhibitors for SARS-CoV-2 is an obvious strategy to combat SARS-CoV-2. To enhance therapeutic efficacy a sensible strategy would be to develop a multi-targeted combination of RdRP inhibitors with approved or clinical-stage drug candidates against other viral and/or host proteins.

Although RdRp is strictly a component of the SARS-CoV replicase polyprotein we have included it as a separate entity to allow us to more sensibly curate pharmacological information (particularly regarding inhibitor development) that is specific for this enzyme.RdRP functions as a component of a genome replication protein complex that also contains nsp7 and nsp8 [2-3]. RdRP-mediated replication can be primer-dependent, but RdRp is also capable of de novo (primer-independent) RNA synthesis. It has been suggested that nsp8 is a second, non-canonical RdRP that generates short primers that are used by nsp12 canonical RdRp for primer-dependent RNA synthesis [2].

References

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1. Gordon CJ, Tchesnokov EP, Woolner E, Perry JK, Feng JY, Porter DP, Götte M. (2020) Remdesivir is a direct-acting antiviral that inhibits RNA-dependent RNA polymerase from severe acute respiratory syndrome coronavirus 2 with high potency. J. Biol. Chem., 295 (20): 6785-6797. [PMID:32284326]

2. Imbert I, Guillemot JC, Bourhis JM, Bussetta C, Coutard B, Egloff MP, Ferron F, Gorbalenya AE, Canard B. (2006) A second, non-canonical RNA-dependent RNA polymerase in SARS coronavirus. EMBO J., 25 (20): 4933-42. [PMID:17024178]

3. Kirchdoerfer RN, Ward AB. (2019) Structure of the SARS-CoV nsp12 polymerase bound to nsp7 and nsp8 co-factors. Nat Commun, 10 (1): 2342. [PMID:31138817]

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