10 20 30 40 50 UCCGUAAGUGAAGCUUG- U U A- U-| UGCUCGC AC UCU UAUCU CGUUCCAG AAUGCGUUUGCA \ UG AGA AUAGA GUAGGGUC UUACGUAAAUGU U UACAUUUUACUACCAUUA U U GC UC^ CAACUUU . 110 100 90 80 70 60