(A–C) Quantity of RNA-RNA interactions occuring in peak and non-peak regions is shown for wild-type WSN (A), the hotspot mutant (B), and wild-type WSN
derived from SPLASH (C). The bottom and top of the boxes represent the 25th and 75th percentiles; the bar in the middle represents the median value, and the whiskers represent 1.53 the interquartile range extended out from the 25th and 75th percentiles. The values on the y axis represent the absolute number of mapped RNA hybrids at each nucleotide, which were plotted based on their classification of overlapping with either a called NP peak or a non-peak (Lee et al., 2017); 3,958 and 9,623 nucleotides of the WSN IAV genome were called as peaks and non-peaks, respectively. Please note that values are dependent on sequencing coverage (SPLASH data contained more sequencing reads than the 2CIMPL data, hence the higher values); p values were determined using the Wilcoxon signed-rank test. See also Figures S5.