10 20 30 40 50 GUUCAUCGGUACAAUAU--| UG C - UUGUU UGUCACCU UGG UCACC UUG UGCAUUG GCAUUGCA \ ACC GGUGG AAU ACGUGAC UGUAACGU U UCGGUAUAUACUUCUGUCG^ UU - G UUCUU GUUUUAAG . 110 100 90 80 70