10 20 30 40 50 CUCCGAUCUUCCUGUGC--| C UC U C UCUGUG CCUU UCCUCAGGG CAGU UU CCAGGAAUCCCU \ GGAA GGGGGUUCU GUCA AA GGUCCUUAGGGG A UACUAGAAGUCGGCGGUUC^ C U- U A AAUAGU . 110 100 90 80 70