10 20 30 40 50 GCACUUCACCUCUAUGG--| U CG ACC GCAGCAU CCUAA GGCUAUGGGCU UCCCU CUUGCAGU \ GGAUU UCGAUACUCGA AGGGA GAGCGUCA G AGGAGAGAGUCGUAACACC^ U AG AGA AGAAAAA . 110 100 90 80 70