10 20 30 40 50 60 NNNNNNNNNNNNNNNNNNNNNN -----| GG CCUGCCU GGGC CA GGCUGCAACACAGGACAUGGGU C UCCG GU CCGACGUUGUGUUCUGUGCUCG U CUGUCUGACUGUCCCUCUG--- UCGAG^ GA CCCCUCC 120 110 100 90 80 70