10 20 30 40 50 CCAGAAGGUUUGACACG--| UC C U G U GGAUGAA GGG UC UGC GCGCCA UAUCGGGUGGG GAU C CCC AG ACG CGUGGU AUGGCCCACCC CUG U AACACAGGAGAAACUCUAA^ UU A U G U ACGGAUU . 110 100 90 80 70 60