10 20 30 40 50 UCAAUUUGGAACUAUUGCUCCAA--| U - UA CA UGGAAU GAUCGAU GAU UGUC UACG UUUCGUU \ CUAGUUA CUA ACAG AUGC AAAGCAA A UCUUGAUCCUACUGCUUGACGAAAA^ - U GC UA UCAUAA . 110 100 90 80 70