10 20 30 40 50 UUCCCAGCACUGCCCUGUGAACA --| C U CCU A GUGAUGC GUCU CCA CACC CC GC AACGUCCA \ CGGA GGU GUGG GG CG UUGCAGGU A UCCCUAGGAGUCGUCCCCCAAGC CG^ A U UCU G AAUGGAG . 110 100 90 80 70