10 20 30 40 50 UGGACAGAAUCCUUCUU--| U G A C U GUACAUUAU UGGUAUU AAAA GU GAUU UCCU CUAUGA \ ACUAUGA UUUU CA CUAA AGGA GAUACU U CUCCAAAGGUUCGUCGUAA^ C G C A - AAUUAGCAU 110 100 90 80 70 60