10 20 30 40 50 UAUCCUGCCUCCAUCCCUU--| U AUU C U AU UGUGAAU CCAGC GCCAC UG ACAAGG GCUCU UC \ GGUUG CGGUG GC UGUUCC CGAGA AG U CAAAGCGACGGUUCAAGAAGC^ U AU- U U -- UCCUCUC 110 100 90 80 70