Figure 1.

BUNV orthobunyavirus and RVFV phlebovirus coding strategies (not to scale). The three genomic RNA segments L, M and S are shown as solid lines with their lengths (nt) shown above. mRNAs are indicated by arrows, with solid dot depicting nontemplated primer at 5′end. Gene products are shown as hatched boxes, and protein designations and sizes (kDa) are indicated. The ambisense S segment of RVFV encodes proteins in both negative- and positive-sense orientations, separated by an intergenic region that can form a hairpin structure.