10 20 30 40 50 60 GCUGACAAUGCAGUGCU----| AC U U A ACA GUGGU GUGC UAG GUG GUAA CAUCCU CUCUCAGCU G CACG GUC UAC CAUU GUAGGA GAGGGUCGA U GUGCACCGACGACGAGGUAGA^ -- U U C G-- GUCGA . 110 100 90 80 70