10 20 30 40 50 UCCUCCGGCCCCGGCCC--| CU U A G UGGCUC GGGCCGCGGCUC GAU GUCCA AC CAAUUCUCG \ CCCGGCGCCGAG CUA CAGGU UG GUUGAGAGC C GGAGGAGACGCUCCGCACC^ CC - C G UCCCGG . 110 100 90 80 70