10 20 30 40 50 GCAAUUAUGUCAAAAUGCAAUG--| AC A C UUUGG CACUGAAGG CAGAA UGAGACA UCGUA \ GUGAUUUCC GUCUU ACUCUGU AGUAU A UAUUUAUGAUCGGGAAUGGCAGUG^ AC C A AUACG 110 100 90 80 70 60