10 20 30 40 50 UUGCUAGAUUUAUUCAG--| U UG G U CGGA AC CUCUUCGG ACG GUAUUCUUGGGUG AUAAUA U UG GAGGAGCU UGC CAUAAGAAUUCGU UAUUGU U AACUUCACAGCUUCUGACA^ U GA G - UGCA 110 100 90 80 70 60