10 20 30 40 50 CCGUCUUCCCGCGUAAC--| U G G A G C AUUCAU GUG GUA UGCUCUGCU AGG AGGU CU AUUGC U CAC CGU AUGAGGCGA UCC UCCA GA UAAUG C GUGGCGUCUGCAUGAAGUC^ U A G C G U AGAAUA . 110 100 90 80 70 60