id author title date pages extension mime words sentences flesch summary cache txt cord-001963-4wjvykx7 Liu, Chia-Lin Using mutagenesis to explore conserved residues in the RNA-binding groove of influenza A virus nucleoprotein for antiviral drug development 2016-02-26 .txt text/plain 5457 304 56 title: Using mutagenesis to explore conserved residues in the RNA-binding groove of influenza A virus nucleoprotein for antiviral drug development By interrupting the stacking interaction between Y148 and an RNA base, we identified an influenza virus NP inhibitor, (E, E)-1,7-bis(4-hydroxy-3-methoxyphenyl) -1,6-heptadiene-3,5-dione; this inhibitor reduced the NP's RNA-binding affinity and hindered viral replication. As shown in Fig. 7A , upon H7 treatment at 15μM, the M1 viral RNA synthesis in the influenza virus-infected cells was reduced by 75% at T2. NP is the most abundant RNA-binding viral protein in influenza virus-infected cells and is responsible for recognizing RNA and forming a filamentous nucleocapsid 24 . Using fluorescence titration and an SPR assay of the NPs, we identified one potential natural compound, curcumin (H7), that targets Y148 of influenza virus NP and potently interferes with its RNA-binding activity. ./cache/cord-001963-4wjvykx7.txt ./txt/cord-001963-4wjvykx7.txt