10 20 30 40 50 AAUCGAUCGACUGUCAU- G-| GU UC GUGAUGA GC GGCCACGUG CACUUUUGUGAUU GCAGCU \ CG CCGGUGUGC GUGAAAACACUGA CGUUGA U GCAGGGGGACGUCGACUU GA^ UU UA CUGUGUC . 110 100 90 80 70