10 20 30 40 50 60 GCACGUCGUUGUCCUGC--| C U C UCA GGCCACACU UCGUC UGCGAGG GUCUUGCAGG CG UGCA G AGCAG ACGCUCU CGGGACGUUC GC ACGU A CAGCAGCCACUACUCCUAC^ A U U UGG UGCAAUGGC 120 110 100 90 80 70