10 20 30 40 50 UUCCUCGAGACAACGAAA--| UAAAA A C CG GUAUA UGCC UU GCGU CACUGUGU GCCUUGGU U ACGG AA CGUA GUGGCGCA CGGAAUUA U AACAUAUUGCACGACGGUAA^ UGUGG C A -- UCCAU 110 100 90 80 70 60