Fig. 2.

(A) Sequence logo of the TRS-L CS from all coronavirus subgenera. The number following the subgenus name indicates the number of sequences used to generate the sequence logo. X-axis shows the relative positions of the sequence letters; y-axis showing the total height of the letters depicts the information content of the position (in bits). (B, C) Alignments of TRS-L, sgmRNA (subgenomic messenger RNA), and TRS-B to illustrate the template switching pattern in SARS-CoV-2 (B) and Porcine epidemic diarrhea virus (C). CSs in TRS-B, TRS-L, and sgmRNA are colored blue.