10 20 30 40 50 AAACUUGUGAGGAAAUAA-- U AG-| G A UCUAU AGGAAGU AGGCUGAGGGGC AGA CGAG CUUU \ UCCUUCG UCUGACUCCCCG UCU GCUC GAAA U CUCUUUGACUUCGCGCCCCA U GAG^ G - ACCUU 110 100 90 80 70 60