10 20 30 40 50 UUUGUUACCCACACCCA-- U G CU A-| CAGGGA GCU CCCUG CU AGCAGCACAG AAUAUUGGCA A UGG GGGAC GA UCGUCGUGUC UUAUAACCGU G GGGGAGGAGCCAUCAAAAG U G CC GG^ CUGAAC . 110 100 90 80 70 60