10 20 30 40 50 CUCCAGCAGCGUUUCACAGCAU--| G A AA UGUUG GU GGGAG UGGUAGACUGUG GCGUACG U CG CUCUC AUCAUCUGGCAC CGCAUGC U CCUUCGGCGGACUCCGACUGGCUC^ A A GA GGUAU 110 100 90 80 70 60