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The innate immune response relies on a set of Pathogen Recognition Receptors (PRRs) that sensor pathogen patterns (PAMPs). RIG-I is a cytosolic PRR that detects 5’-triphosphate double-stranded RNAs produced during infection. Once activated, the pathway leads to the induction of type I IFN and proinflammatory cytokines, leading to a cellular antiviral state. Upon recognition of the RNA, RIG-I hydrolyzes...
We have experimentally tested whether the MRKTKLAPT sequence in FMDV 3D protein (residues 16 to 24) can act as a nuclear localization signal (NLS). Mutants with substitutions in two basic residues within this sequence, K18E and K20E, were generated. A decreased nuclear localization was observed in transiently expressed 3D and its precursor 3CD, suggesting a role of K18 and K20 in nuclear targeting...
Innate immunity conferred by the type I interferon is critical for antiviral defense. To date only a limited number of tripartite motif (TRIM) proteins have been implicated in modulation of innate immunity and anti-microbial activity. Here we report the complementary DNA cloning and systematic analysis of all known 75 human TRIMs. We demonstrate that roughly half of the 75 TRIM-family members enhanced...
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