10 20 30 40 50 CUCGCACGGCGCGGCCC----| CGC A C C U C ACGUUGC CGGC CGGGCGC CC GUC CG GCGU CCCGG \ GUCG GCCCGCG GG CAG GC UGCA GGGCC U AGCCCCAGCCGCUUCCACCGA^ A-- A U A - A CCGUCUC . 110 100 90 80 70