10 20 30 40 50 60 AGGAUUCCAGCGACGCG---| C UC U UCGAGGGUG GGAGGGG GGGAGGGGGG CCCGG GCUCGGAUC \ CCUCCCC CCCUCUCCCU GGGUC CGAGCCUGG C AGUCGUCGGCCUCCCCGACU^ - CU - CUUGUUAUU 120 110 100 90 80 70