10 20 30 40 50 60 AAAGUGUCACCUCACAC--| UC AA U AGCUAAGCCU GAUUC AAAGGU AUAUCAGCUGG AAUUCUGGG A UUAAG UUUUCA UAUGGUUGACU UUAAGGCUC A CGAAUACCACUAGUUUACG^ UU GC - ACAAAGUAUA 120 110 100 90 80 70