10 20 30 40 50 UCGGAGGAUGGGAAUCU-- AU -| G C UCAAAU UGGAAUUGGUC CGUC UUACC GACAG AUUGGA \ AUUUUGGCUAG GUAG AAUGG CUGUC UAAUCU U UUGGCAAGACCACAUGAAC CU A^ A A UUAUAG . 110 100 90 80 70 60