10 20 30 40 50 UAAUUCACUGACAACCU--| G CA A CUGGU GCGAUGU UGCAUUG UUGCG UGGGUUACAUCA C UGCUGUA AUGUAGU GACGC ACCCAAUGUAGU A AAUUUUAGAGGUUACAUAG^ A AC A ACAAU 110 100 90 80 70 60