10 20 30 40 50 60 GACUUCAGAACCUCCACGU- C C-| A AA A UUGAGUGG CAC UGCUC UC GAUCAG GGUG UUGUGGCU \ GUG ACGAG AG CUGGUC UCAC GACACCGA A GUACUCCAUUUUCCGAUCCU A AA^ A CG - CUAAUUAU 120 110 100 90 80 70