10 20 30 40 50 60
CCCGUGCCUCCCCGACA----| UG C UU GGUCGGGUUGUGACA
CCA GC CUGGC GAGGUAGUAGUUUGUGCGUU U
GGU CG GAUCGUUCCGUCAUCGAACGCGCAA U
GGAGGCGCCGCGACUCGUAGU^ -- U - U UAGAGGUGUCGCCCG
130 120 110 100 90 80 70
Although there is a templated thymidine at the 3' end of the 3p arm, the post-transcriptional addition of a terminal 3' uridine is supported by the CAGE data from de Rie et al. (2017). All other vertebrates are treated accordingly.