FIG. 4.

mRNA editing in rSeV-infected cells with complementary sequences at positions −20 to −12 and an rSeV with a SV5 editing site. The various rSeVs in which the sequences at positions −20 to −18, −20 to −15, or −20 to −12 were mutated to their complements, as well as one containing positions −20 to −1 of the rubulavirus SV5 sequence (SV5), are shown above. The sequences of SeV strains H and Z, which vary at position −18, are also shown. The distribution of lengths of their P gene mRNA purine runs, as determined by primer extension analysis limited with ddATP (as in Fig. 2 and 3), are shown below.