10 20 30 40 50 CGGUGUCCUCCUGCAGU--| C UU C GUGAUCU GGCCGGC CCAGG CAAGUAAUC AGGAUAGGCU \ CCGGUCG GGUCU GUUCAUUGG UCUUGUCCGA G GUAGGCCUCACUUCGUAGA^ A CG U CUGACGG . 110 100 90 80 70