10 20 30 40 50 CCUGAGGAACUCCGGGGGCUCCA--| GA AGA CUGACG GGAGAG GGCA UGCUGGCAUAGCUG C UCUUUC CCGU ACGACCGUGUCGGC U CGUCUACCACCUCCGUUUCCCUCCG^ UC CCA CCUCGG . 110 100 90 80 70 60