10 20 30 40 50 GCGCGCUCUGUGCGGGG--| GUAC A A GAGUUAU CCUGUCG UGU GCAGCACAG AUGGUUUGU A GGACAGC ACG CGUCGUGUC UGCCGGACG A UACCCUUCACGCGCAGACA^ AACA G A UGGGGGC . 110 100 90 80 70 60