Template requirements of Zika RNA polymerase during in vitro RNA synthesis from the 3′-end of virus minus-strand RNA
| Autor: | Christina Calmels, Mathieu Métifiot, Marie-Line Andreola |
|---|---|
| Přispěvatelé: | Microbiologie Fondamentale et Pathogénicité [Bordeaux] (MFP), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2022 |
| Předmět: |
viruses
Biology Virus Replication Biochemistry Virus law.invention Zika virus 03 medical and health sciences chemistry.chemical_compound law RNA polymerase Humans Directionality Nucleotide ComputingMilieux_MISCELLANEOUS Polymerase 030304 developmental biology chemistry.chemical_classification 0303 health sciences Zika Virus Infection 030302 biochemistry & molecular biology RNA Zika Virus General Medicine RNA-Dependent RNA Polymerase biology.organism_classification Virology 3. Good health chemistry [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology Recombinant DNA biology.protein RNA Viral |
| Zdroj: | Biochimie Biochimie, 2021, ⟨10.1016/j.biochi.2021.11.003⟩ |
| ISSN: | 0300-9084 |
| DOI: | 10.1016/j.biochi.2021.11.003 |
| Popis: | As ZIKV continues to spread, many “unknowns” remain and research is needed to advance the understanding of this important pathogen. Viral RNA dependent-RNA polymerases (RdRp) are validated targets for inhibitors of the replication of several viruses. Several studies have set up in vitro enzymatic assays of the RdRp of the Zika virus for testing of candidate inhibitors. While most of these studies use short synthetic polymers, we have shown in a previous work that the Zika polymerase domain is capable of a de novo synthesis of the viral genome using the natural viral RNA as template. Here we have studied the role of the sequences at the 3′end of the minus-strand RNA in the initiation of the RNA synthesis by the Zika isolated RdRp. Our results strongly suggest that the region containing the 105 first nucleotides from the 3′ end of the minus-strand RNA is important for initiation of the positive RNA synthesis. This indicates that this region displays all the primary and secondary structures to be efficiently recognized by the recombinant RdRp in vitro. Moreover, we show that the 46 nucleotides are sufficient to initiate RNA synthesis. In addition, the ZIKV polymerase domain poorly replicated the RNA of other RNA viruses and appeared highly selective for its own RNA. |
| Databáze: | OpenAIRE |
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