10 20 30 40 50 CCAGCAGCUGCUGGCAAA--| CCUC GC A GA UUAAAUG GGCC UCU GUGUUCAC GCG CCUUGAU \ UCGG AGA CGUAAGUG CGC GGAAUUA U GGCGGCCGGCUUCAAAAAGG^ AGCA AU G AC ACAUACC . 110 100 90 80 70