scholarly journals Efficient Interaction between Arenavirus Nucleoprotein (NP) and RNA-Dependent RNA Polymerase (L) Is Mediated by the Virus Nucleocapsid (NP-RNA) Template

2015 ◽  
Vol 89 (10) ◽  
pp. 5734-5738 ◽  
Author(s):  
Masaharu Iwasaki ◽  
Nhi Ngo ◽  
Beatrice Cubitt ◽  
Juan C. de la Torre
Keyword(s):  
Rna Polymerase ◽  
Gene Transcription ◽  
Viral Genome ◽  
Rna Replication ◽  
Rna Dependent Rna Polymerase ◽  
Rna Sequences ◽  
L Protein ◽  
Virus Rna

In this study, we document that efficient interaction between arenavirus nucleoprotein (NP) and RNA-dependent RNA polymerase (L protein), the twotrans-acting viral factors required for both virus RNA replication and gene transcription, requires the presence of virus-specific RNA sequences located within the untranslated 5′ and 3′ termini of the viral genome.

scholarly journals Hepatitis E Virus RNA‐Dependent RNA Polymerase is Involved in RNA Replication and Infectious Particle Production

Hepatology ◽  
2021 ◽  
Author(s):  
Noémie Oechslin ◽  
Nathalie Da Silva ◽  
Dagmara Szkolnicka ◽  
François‐Xavier Cantrelle ◽  
Xavier Hanoulle ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Hepatitis E Virus ◽  
Particle Production ◽  
Rna Replication ◽  
Hepatitis E ◽  
Rna Dependent Rna Polymerase ◽  
Infectious Particle ◽  
Virus Rna

The RNA-dependent RNA polymerase of cowpea is not involved in cowpea mosaic virus RNA replication: Immunological evidence

Virology ◽  
1984 ◽  
Vol 132 (2) ◽  
pp. 413-425 ◽  
Author(s):  
Jos Van Der Meer ◽  
Lambert Dorssers ◽  
Albert Van Kammen ◽  
Pim Zabel
Keyword(s):  
Rna Polymerase ◽  
Mosaic Virus ◽  
Rna Replication ◽  
Cowpea Mosaic Virus ◽  
Rna Dependent Rna Polymerase ◽  
Virus Rna

scholarly journals Sendai Virus RNA-dependent RNA Polymerase L Protein Catalyzes Cap Methylation of Virus-specific mRNA

2004 ◽  
Vol 280 (6) ◽  
pp. 4429-4435 ◽  
Author(s):  
Tomoaki Ogino ◽  
Masaki Kobayashi ◽  
Minako Iwama ◽  
Kiyohisa Mizumoto
Keyword(s):  
Rna Polymerase ◽  
Sendai Virus ◽  
Rna Dependent Rna Polymerase ◽  
L Protein ◽  
Virus Rna ◽  
Specific Mrna

scholarly journals Analysis of Ribonucleotide 5′-Triphosphate Analogs as Potential Inhibitors of Zika Virus RNA-Dependent RNA Polymerase by Using Nonradioactive Polymerase Assays

2016 ◽  
Vol 61 (3) ◽  
Author(s):  
Gaofei Lu ◽  
Gregory R. Bluemling ◽  
Paul Collop ◽  
Michael Hager ◽  
Damien Kuiper ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Zika Virus ◽  
Nonstructural Protein ◽  
Rna Dependent Rna Polymerase ◽  
Antiviral Compounds ◽  
Double Stranded Dna ◽  
Virus Rna ◽  
Potential Inhibitors

ABSTRACT Zika virus (ZIKV) is an emerging human pathogen that is spreading rapidly through the Americas and has been linked to the development of microcephaly and to a dramatically increased number of Guillain-Barré syndrome cases. Currently, no vaccine or therapeutic options for the prevention or treatment of ZIKV infections exist. In the study described in this report, we expressed, purified, and characterized full-length nonstructural protein 5 (NS5) and the NS5 polymerase domain (NS5pol) of ZIKV RNA-dependent RNA polymerase. Using purified NS5, we developed an in vitro nonradioactive primer extension assay employing a fluorescently labeled primer-template pair. Both purified NS5 and NS5pol can carry out in vitro RNA-dependent RNA synthesis in this assay. Our results show that Mn2+ is required for enzymatic activity, while Mg2+ is not. We found that ZIKV NS5 can utilize single-stranded DNA but not double-stranded DNA as a template or a primer to synthesize RNA. The assay was used to compare the efficiency of incorporation of analog 5′-triphosphates by the ZIKV polymerase and to calculate their discrimination versus that of natural ribonucleotide triphosphates (rNTPs). The 50% inhibitory concentrations for analog rNTPs were determined in an alternative nonradioactive coupled-enzyme assay. We determined that, in general, 2′-C-methyl- and 2′-C-ethynyl-substituted analog 5′-triphosphates were efficiently incorporated by the ZIKV polymerase and were also efficient chain terminators. Derivatives of these molecules may serve as potential antiviral compounds to be developed to combat ZIKV infection. This report provides the first characterization of ZIKV polymerase and demonstrates the utility of in vitro polymerase assays in the identification of potential ZIKV inhibitors.

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