10 20 30 40 50 ACUACUGUGGACCAAUU--| G G A AGAG UCUUGGG CCCAAUUCUGCUCUUAUU AA UCAGUG U AGAAUCC GGGUUAAGACGAGGGUAA UU AGUUAC U GGGUCUUGACGUUUCCAGA^ A A C CGUC 110 100 90 80 70 60