10 20 30 40 50 CGAUGGCGGAUAUUAUU---| CU AA ACA AAAUGUGUG CUAG GAGUC UG UAACUUGGAAUUUUA \ GAUC CUUAG AC AUUGGACCUUAAGAU A CCGUUACAGACAGCUCAACA^ U- CG CGC ACUAAAGAC . 110 100 90 80 70