10 20 30 40 50 60 CUGACGACCCUGUUUAG--| C U U A AGUCACGUCA AGUCU UAGCGGC GAU GUCCA ACGCAAUUCUUG \ UCAGG GUCGUUG CUA CAGGU UGUGUUAAGAAC A GUCGUUUCACUACUUAACC^ C U - A GCCAACUCAA 120 110 100 90 80 70