Abstract
The realization that segmented negative-strand RNA virus genome ribonucleoproteins are never free as their RNA ends are always bound to the viral polymerase has highlighted the problem of how these genome segments are replicated and express their mRNAs while their RNA ends remain associated with the polymerase throughout the cycles of RNA synthesis. This study of the length and nucleotide composition of the Orthonairovirus hazaraense L segment-specific double-stranded RNA (dsRNA) promoter element (the promoter duplex) provides insight into how its mRNA might be initiated and suggests that this promoter element acts via its separated single strands as well as via dsRNA.
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