10 20 30 40 50 CUCGGGCAUUUCGCUUU---| A C - G U C UGUGGC CCA AUGC UGG CAGU CAGAGGG GGUGAG AUGC \ GGU UACG ACC GUCA GUCUCUU CCACUC UAUG C CCGACCCAACUUCGUCUCAG^ C - U - U - AACUCU . 110 100 90 80 70