10 20 30 40 50 AUAUUAAGCAGAGACCC---| U G - A C GUGAU AAACCC AGGUCU CU GACUCCU GU CAGGGCUC G UUUGGG UCCGGA GG CUGGGGA CA GUCCCGGG G GUCUCUCCGACCGCUAUAAG^ - - U G A UGGUC 110 100 90 80 70 60