A Cell-Based Reporter Assay for Screening Inhibitors of MERS Coronavirus RNA-Dependent RNA Polymerase Activity. [PDF]
Severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and coronavirus disease 2019 (COVID-19) are emerging zoonotic diseases caused by coronavirus (CoV) infections. The viral RNA-dependent RNA polymerase (RdRp) has been suggested as a valuable target for antiviral therapeutics because the sequence homology of CoV RdRp is ...
Min JS, Kim GW, Kwon S, Jin YH.
europepmc +6 more sources
A second, non-canonical RNA-dependent RNA polymerase in SARS Coronavirus [PDF]
In (+) RNA coronaviruses, replication and transcription of the giant approximately 30 kb genome to produce genome- and subgenome-size RNAs of both polarities are mediated by a cognate membrane-bound enzymatic complex. Its RNA-dependent RNA polymerase (RdRp) activity appears to be supplied by non-structural protein 12 (nsp12) that includes an RdRp ...
Isabelle Imbert +2 more
exaly +4 more sources
Severe acute respiratory syndrome (SARS) is a highly contagious and sometimes a lethal disease, which spread over five continents in 2002-2003. Laboratory analysis showed that the etiologic agent for SARS is a new type of coronavirus. Currently, there is no specific treatment for this disease.
Brian S Schaffhausen
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Coronavirus RNA-dependent RNA polymerase interacts with the p50 regulatory subunit of host DNA polymerase delta and plays a synergistic role with RNA helicase in the induction of DNA damage response and cell cycle arrest in the S phase. [PDF]
Disruption of the cell cycle is a common strategy shared by many viruses to create a conducible cellular microenvironment for their efficient replication. We have previously shown that infection of cells with gammacoronavirus infectious bronchitis virus (IBV) activated the theataxia-telangiectasia mutated (ATM) Rad3-related (ATR)/checkpoint kinase 1 ...
Quan L, Sun X, Xu L, Chen RA, Liu DX.
europepmc +6 more sources
Template-dependent inhibition of coronavirus RNA-dependent RNA polymerase by remdesivir reveals a second mechanism of action. [PDF]
Remdesivir (RDV) is a direct-acting antiviral agent that is used to treat patients with severe coronavirus disease 2019 (COVID-19). RDV targets the viral RNA-dependent RNA polymerase (RdRp) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Tchesnokov EP +7 more
europepmc +4 more sources
Potential Phytochemical Inhibitors of the Coronavirus RNA Dependent RNA Polymerase: A Molecular Docking Study [PDF]
Abstract The COVID-19 disease that originated in China by the end of 2019 has now become a pandemic and has affected 216 countries as on 08 June 2020. RNA dependent RNA polymerase (RdRp), the core enzyme in the multiprotein replicase-transcriptase complex of coronaviruses, serves as a classical target for inhibiting the coronavirus infectivity.
P A +5 more
europepmc +2 more sources
Homology-Based Identification of a Mutation in the Coronavirus RNA-Dependent RNA Polymerase That Confers Resistance to Multiple Mutagens. [PDF]
ABSTRACT Positive-sense RNA viruses encode RNA-dependent RNA polymerases (RdRps) essential for genomic replication. With the exception of the large nidoviruses, such as coronaviruses (CoVs), RNA viruses lack proofreading and thus are dependent on RdRps to control nucleotide selectivity and fidelity.
Sexton NR +5 more
europepmc +4 more sources
Highly effective novel treatments need to be developed to suppress emerging coronavirus (CoV) infections such as COVID-19. The RNA dependent RNA polymerase (RdRp) among the viral proteins is known as an effective antiviral target. Lycorine is a phenanthridine Amaryllidaceae alkaloid isolated from the bulbs of Lycoris radiata (L'Hér.) Herb.
Young-Hee Jin +2 more
exaly +3 more sources
The antiviral compound remdesivir potently inhibits RNA-dependent RNA polymerase from Middle East respiratory syndrome coronavirus [PDF]
Antiviral drugs for managing infections with human coronaviruses are not yet approved, posing a serious challenge to current global efforts aimed at containing the outbreak of severe acute respiratory syndrome-coronavirus 2 (CoV-2). Remdesivir (RDV) is an investigational compound with a broad spectrum of antiviral activities against RNA viruses ...
Calvin J Gordon +2 more
exaly +3 more sources
RNA-dependent RNA Polymerase Activity in Murine Coronavirus-infected Cells
The multiplication of murine coronavirus strains A59 or JHM in Sac(-) cells was unaffected by the presence of alpha-amanitin at concentrations which inhibited the host cell DNA-dependent RNA polymerase activity. In cells infected with the A59 virus strain, actinomycin D-resistant RNA synthesis could readily be detected by pulse-labelling with [3H ...
B W J Mahy, Stuart Siddell, H Wege
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