10 20 30 40 50 UCAGGGUCCUCUCUGAC- - UC C-| AGA GCUGCCC AGCU GU CUUCUUGGGUCCUGG UGG UCUCU \ UCGG CG GAGGGACUCAGGACC ACC GGAGA C UCCCGACCCGACCGGGUU U GU UC^ GA- CUCAGAC . 110 100 90 80 70