Molecular and transcriptional insights into viperin protein from Big-belly seahorse (Hippocampus abdominalis), and its potential antiviral role

In this study, a viperin homolog in the Big-belly seahorse (Hippocampus abdominalis; HaVip) was functionally characterized to determine its subcellular localization, expression pattern, and antiviral activity in vitro. The HaVip coding sequence encodes a 348 amino acid polypeptide with predicted molecular weight of 38.48 kDa. Sequence analysis revealed that HaVip comprises three main domains: the N-terminal amphipathic α-helix, a radical S-adenosyl-L-methionine (SAM) domain, and a conserved C-terminal domain. Transfected GFP-tagged HaVip protein was found to localize to the endoplasmic reticulum (ER). Overexpressed-HaVip in FHM cells was found to significantly reduce viral capsid gene expression in VHSV infection in vitro. Under normal physiological conditions, HaVip expression was ubiq...

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