10 20 30 40 50 GCCUCGUGCCGCGAACU--| CCC UCC AG CU GGAC GAGCG GGA GGGGCCGG CACUGU GAGA U CUCGC CUU CUCUGGCC GUGACA CUCU A GGUGACCGGCCUCUCCUAC^ CGA UUU AA -- UAAC 110 100 90 80 70 60