10 20 30 40 50 UUUGUUGCCCACACCCA-- CU G CU A-| UGGGGA ACU CCUG CU AGCAGCACAG AAUAUUGGCA A UGG GGAC GA UCGUCGUGUC UUAUAACCGU G GGGGAAGAGUCAUCGAGAG UG G CC GG^ CUGAGU . 110 100 90 80 70 60