10 20 30 40 50 GCAUCUUUGUAUCCAGC----| CU U A GGAUUGCUA UGAU GUGGUU AGGUAGUUUC UGUUGUUG A ACUG CAUUAA UCCGUCAAAG ACAACGGC U AACGUGAACUACUUCUGCUUG^ -- U A GCAAUUCUU . 110 100 90 80 70 60