10 20 30 40 50 60 70 UGUAUCGUUCUAAAUAAA -- AAGG-| UU UU UCAUCGUGGUUACUUGUUAGGUACU AGCA GCAUCUG GAAUGUCUG CGGU GUG A UCGU UGUAGAC CUUACAGAU GCCA CAC C CAGAUAUUUCUUCAAAUG UC GCCUA^ GG C- AUGACUUUUUAUCAAUGUAAUAAUU . 150 140 130 120 110 100 90 80