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