10 20 30 40 50 GGCGUCGACAAAGAGUG---| GG U CU GUGAU GGUU UCUUUU GUGUUCACUGUGU GCCUUGGU U CCGA GGGGAA CGUAAGUGGCGCA CGGAAUUA U AUUCUAAAACAUCUUAUUAC^ A- C -- GCACG 110 100 90 80 70 60