Dengue Virus NS5 Target Discovery: A Comprehensive in Silico Exploration of Novel Druggable Sites for Pan-Serotype Antiviral Design
Abstract
Dengue is the most common vector-borne viral disease worldwide, posing an increasing global health threat. Despite its high burden, no approved antiviral treatments or widely applicable vaccines exist, and patient management remains limited to supportive care, underscoring the urgent need for antiviral development. The NS5 protein is a prime antiviral target, owing to its crucial role in viral replication, high conservation across dengue virus (DENV) serotypes and lack of a human orthologue. We conducted a comprehensive sequence-to-structure analysis to identify conserved druggable regions within NS5, integrating large-scale sequence analysis with structural characterization across all four DENV serotypes. We identified four highly promising Consensus Druggable Pockets within the NS5 dimer-CDP1d, CDP3d, CDP5d and CDP12d-that overlap functionally critical regions, alongside 149 new potential hot spot residues. Domain-specific analysis revealed that MTase offers more densely conserved targets, whereas RdRp provides broader druggable surfaces, revealing complementary features for pharmacological modulation. Several identified pockets spatially overlap known inhibitor binding sites, and preliminary docking analyses support their capacity to accommodate small molecules, reinforcing their therapeutic relevance as candidate targets. Collectively, these findings provide a robust framework for the rational design of pan-serotype anti-DENV NS5 antivirals with an enhanced barrier to…
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