10 20 30 40 50 60 UCGGCUUGGCAUCUCCA--| CU GU C GC - GCCUGAGC GGGUC C CUCUCCUGGUC UCUC UGCCCC CU \ CCCGG G GAGGGGACCAG AGAG ACGGGG GG A ACCGGGUCCUCGUCUCGAG^ UC UG U -- C UCGUCUGC 120 110 100 90 80 70