10 20 30 40 50 GCGAAUUGUUGAGCCUGUGCAA- A- U -| U GUGU CUUCGU UACGUAUACUGAA GUAU CC GA A GGAGCA AUGCAUAUGACUU CAUA GG CU U GUGUAGGGCGCAACGACCACAAA CA C U^ C AUCC 110 100 90 80 70 60