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RNA-dependent RNA polymerases (RdRPs) are the central players in both transcription and viral genome replication. Using NMR spectroscopy, Yang and colleagues (in this issue of Structure) show that the conformational changes in the structural motif D of poliovirus RdRP correlate with the nature of the bound nucleotide (correct versus incorrect), with a conserved lysine within this motif playing a key...
Infectious bursal disease virus (IBDV), a member of the Birnaviridae family, is the causative agent of one of the most harmful poultry diseases. The IBDV genome encodes five mature proteins; of these, the multifunctional protein VP3 plays an essential role in virus morphogenesis. This protein, which interacts with the structural protein VP2, with the double-stranded RNA genome, and with the virus-encoded,...
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