10 20 30 40 50 60 ACAGCAGGGUGCAACGU- - G C -| CCC GUGUG GC CUCCCCGGGG AACAA AUC CUGGUGCUG GGGU C CG GAGGGGUUCC UUGUU UAG GACUACGAC CUCA A UCUUGCAGGCGACUCUAG U G U U^ --- AGACG 120 110 100 90 80 70