10 20 30 40 50 ACUAAGGCCCUGGCGAA- -| G U C GUGCAGG GGC CGUG CCUCGU CAAGUAAUC AGGAUAGGCU \ CCG GCGC GGGGCA GUUCAUUGG UCUUAUCCGG U GGGCCUACGGCCGCAGGU U^ A C U GCAACCC . 110 100 90 80 70