10 20 30 40 50 UCUCUGUCUCUCUCCCUC G - C-| AGUAUU ACA CUGCCAGUG UCAUUUUUGUGAU UGCAGCU A UGU GACGGUUAC AGUGAAAACACUG ACGUUGA U GGACAGGCACGCCGUCGG G U AU^ CUUCGG . 110 100 90 80 70 60