10 20 30 40 50 UUGGCCAUUGGUGAACUG-- U G GC --| U GAUGCA UGUG AAA U CUGUCA AGCUGA UAAGUAUU A ACAC UUU G GACAGU UCGACU AUUCAUAA C CCAACGUACACAACAAGUCA C G UU CU^ U GUAGCA . 110 100 90 80 70 60