10 20 30 40 50 GCGCGCAGGCGCGGGCC--| UC G UA G GGCUCGU GCGC UCCCGGC GU GGGC CGUCACGUGACG \ CGCG GGGGCCG CG UCCG GCAGUGCACUGC C CCCCGCGUGCGGCGCCUCU^ UC G GC G CGCCUCG . 110 100 90 80 70