10 20 30 40 50 GCAGCCGCGGGUGCCCG- CG GUA-| UCA C ACUGU GUGCU GUUU GGCAGUG UUAG UGAUUGU G CACGG CAAA CCGUCAC AAUC ACUAACA G GGCCCGCCGCCACUACGA AA ACUA^ CUC - UUGGU 110 100 90 80 70 60