10 20 30 40 50 60 AUUCUGGACUGAGAGAA- CUCC-| UC U C UCAGGACU UCCA GUCU CCAGUGU CGGACUAC UGU A GGGU CGGA GGUUACA GUCUGAUG ACA C GGUCUUGGACGACACAUA CGUGU^ UU C - UGUUAGAA . 110 100 90 80 70