10 20 30 40 50 CUCCUGUUCUUGCAACUC--| C U A CGUAUU CAGGUGC CGGUUGU GAGAGGCAGGAAAC UGC U GUCCGCG GUUAACA UUCUCCGUUCUUUG AUG C UGAGAGAGGACCCGUCCCCU^ A - A GGUCUC 110 100 90 80 70 60