10 20 30 40 50 60 CCGGGAGCCAAGACUGA-- -| UG U GU UGGGGCUCUGC CGGCC CUU GGG GAG AGUAGGUUGUAUAGUU C GCCGG GAA CCU UUC UCAUCUAACAUAUCAA C GACAGGUGGCAACUAUAAU U^ GU - UG UGGGGUAUCGU . 120 110 100 90 80 70