10 20 30 40 50 GGACACCCACCGGGACU--| A UG AG G C - U GGACGC GGCC G UUG AGGC GAGACA GG GCAAU GCU \ CCGG C GAC UCUG CUCUGU UC CGUUA CGG U GGGGUGUAGACGUCACAAC^ C GU AG G - A - GUCCCG . 110 100 90 80 70