10 20 30 40 50 GAGAUGCUGGUGUGAGCAU-- CC GU U A-| G GCAAGCA UGU AGGGU GUGACUGG UG CCA AGGG C ACG UCCCA CACUGAUC AC GGU UCCC U AAGGACCCGCCCGCCCCACCC AC AC C CG^ G ACUUGUC . 110 100 90 80 70 60