10 20 30 40 50 60 ACGUCUCCAUGGCUCUA--| UUCC A A A GUUGG CC UGUCGGAUAGCUUAUC GACUG UGUUG CU A GG ACAGUCUGUCGGAUGG CUGAC ACAAC GG U CGUCCAGUCUACUUUCUGU^ UUUU - A - UACUC . 110 100 90 80 70