10 20 30 40 50 UCUUGAUCUUUUCUCGAGA-- C - U -| CA GGGUA GUUCC CUCAU CGCCUGA AC UUGCUU ACCU U CAAGG GGGUG GUGGACU UG AACGAG UGGA U AAAAUAUUUUUAAGAGGAACA U U U A^ -- ACAGU 110 100 90 80 70 60