10 20 30 40 50 AACACGUGGCGUCCCCU-----| A GU A - U UCGGC GU GGC AGGGC GGGU AAUCUUGAUGCUA GAGC U CA CCG UCCUG CUCG UUAGGAUUACGAU CUCG U AGUUUAUACACUUCUAACAGUG^ - -- C G - GAACG . 110 100 90 80 70 60