10 20 30 40 50 UUGCUUCAGGUUCUGUU-- U AAU C-| A UUGUA UGUUUAGUGG AC ACCUCAG CUU UCAGGUG \ ACAAGUCACU UG UGGAGUC GAA GGUCCAC U UCUCAUUUGUACUUCGAAU U AGU AU^ - UUAUA 110 100 90 80 70 60