ArticleBioResearch open access2013
Global consensus sequence development and analysis of dengue NS3 conserved domains.
Article in BioResearch open access, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Fitness adaptations of Japanese encephalitis virus in pigs following vector-free serial passaging.PLoS pathogens · 2024Article
- CRISPR-Cas13a Cleavage of Dengue Virus NS3 Gene Efficiently Inhibits Viral Replication.Molecular therapy. Nucleic acids · 2020Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The dengue virus (DENV) genome encodes 10 different genes including the NS3 gene, which has a protease and helicase domain used in virus replication. This domain is a potential target for antiviral agents against dengue. Due to a high mutation rate, DENV is classified into four major serotypes (DENV1-DENV4). This study was designed to perform conservancy analysis of all four serotypes by drawing a consensus sequence for each serotype and then drawing a global consensus sequence to study conserved residues in all four serotypes. A total of 127 NS3 sequences belonging to all four serotypes were retrieved and aligned using multiple alignment feature of CLC Workbench and were subjected to phylogenetic tree construction. Conservancy analysis of NS3 revealed conserved peptides with active site residues that can be important in developing antiviral agents against dengue virus. Among conserved residues, residues G142, Ser144, and G145 (catalytic pocket residues), A219, D220, and D221 (divalent cations binding residues), and His56, Asp79, Ser144, 146 were highly conserved among all the serotypes. Residues from L138 to L149 and from L226 to L245 were also considerably conserved in all serotypes, while lysine141 mutated to serine in serotype 3. A total of 14 peptides from the conserved regions of DENV NS3 protein were identified, which may be helpful to develop peptide inhibitors. The DENV NS3 phylogenetic tree showed the evolutionary relationship among all four serotypes, and all serotypes of dengue were found to have evolved from the dengue 4 serotype. Because of its high variability, DENV has become a global health concern. It is important to study residues that are present in protease, helicase, the catalytic pocket Mg(2+) binding site, and the AAA domain. This study revealed peptides with active site residues that are highly conserved among all four serotypes. These regions of the NS3 sequence may be helpful in developing antiviral agents.
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