10 20 30 40 50 60 AGAUGUCCAUAAAACCU--| CGC A C G GUAUGU GGCUG GGC GCAGGACUUAACC AC UGUGAACA G UCGGC CCG CGUCUUGAAUUGG UG ACACUUGU U GGGAAGGGAACGUCCGACU^ ACA C - - ACCACU 120 110 100 90 80 70