C. elegans Dicer stacks with the RIG-I-like receptor DRH-1 to cleave dsRNA
In prior studies we showed that the nematode ancestor of Dicer's helicase domain had minimal ATP hydrolysis, translocation and dsRNA binding activity, and in extant C. elegans the RIG-I like receptor (RLR) DRH-1, and the dsRNA binding protein RDE-4, were co-opted to provide these activities. Here we report cleavage-competent cryo-EM structures of the antiviral complex (AVC; DCR-1{middle…
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