10 20 30 40 50 60 UUCCUGUCCGUGCUGCU--| C UG A G UUCACUUUAU GUUU AUACU AGGAGAAAUU UCCUUG UGUG \ UAAA UAUGA UUUUCUUUAA AGGAAC AUAC U CCUUCACCCGACUCCGUUC^ C GU C - UAAGAAGGAU 120 110 100 90 80 70