FIG. 3.

Analysis of cDNA products synthesized from the msr-msd bimolecular reaction. (A) The cDNA products from the bimolecular reaction using the msr transcript and the msd transcript (Fig. 2, lane 4) were labeled at their 3′ ends with [α-³²P]ddATP as described previously (8). The labeled sample was run in two lanes as shown. The band marked by an arrowhead was extracted from the gel, purified, and subjected to sequence analysis. Molecular weight markers were the same as those described in the legend to Fig. 2. (B) The cDNA product was extracted from the band shown by an arrowhead in panel A. The DNA sequence was determined by the method of Maxam and Gilbert (6).