10 20 30 40 50 UCUGGGGUGAUGAUGAC- - G AC--| GA UGAAAA UC CUGUUCUGU UAUGGC UGGUA AUUCACUG C AG GACGAGACA AUACCG ACCAU UAAGUGAC A AAGAUGGUACACCAAGAA A A GGAU^ -- UAUCAC . 110 100 90 80 70 60