10 20 30 40 50 60 UUUCCAGCUCGGCUGUC-- GC A G A A-| GUGCUAG GGCG GCCA CC CGUGAACAC AGCGUGAU CC G CCGC UGGU GG GCGCUUGUG UCGUAUUA GG C UGCGCGUACAAACUCAGGC GU C G A CG^ CUCAGGU 120 110 100 90 80 70