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Structure of the nonstructural protein 1 (NS1) RNA-binding domain (RBD). (A) Structure of the NS1 RBD in the absence of double-stranded RNA (dsRNA). The α2 and α2' helicases contain the amino acids that bind dsRNA. Generated from PBD accession number 1NS1. (B) Structure of the NS1 RBD in complex with a 19-bp dsRNA. From Cheng and others (2009) with permission.
