10 20 30 40 50 GGCCCCCGCUGAGACCGG-- GG U GC-| CGCUCC UGUGC CGGCCUCC CAUUGU AUGCUGUGUG \ ACACG GCUGGAGG GUAACG UGCGACACAC U CGCACCCGCCCCGCAGCCGA GA U UCC^ CCUGUG . 110 100 90 80 70 60