10 20 30 40 50 GGUACGAGCUGGACUAU--| CU CA C AG UCGCUUCAC CCCA CACAU CCUUAUCA UUUUCC CC U GGGU GUGUA GGAAUAGU AAGAGG GG C UUUAGUUGAGCUUCGAGCC^ UU CG C CA UCGUGUAAU . 110 100 90 80 70 60