10 20 30 40 50 CACUCUUUGAUGACUUAAA--| C UU G UA GAUGG AG UGUUUGU AAUCUCA CUGGUAAU UUGA U UC ACAGACA UUAGAGU GAUCAUUG AACU U AUCAUGUAAUCAUCCAAUCUC^ U CU G -- CCGCC 110 100 90 80 70 60