10 20 30 40 50 UCGUUAUGAAGGCUGCACCAU--| U ACG U ACG CGUCU GGGUUAGUU GCACG CAGUUG AUC G \ CCCGGUCAA UGUGC GUUAAC UAG C C CCAGCAGGUCUCAGCGGCAGAAU^ U CAA - CGA GACUA 110 100 90 80 70 60