10 20 30 40 50 GUGAUUCCAGCUGACCU--|UG G A AC AU GUGCUAG A GCACAGU UG GGAGG AC GUGGUGCAGU \ U UGUGUCA AC CCUCC UG UACUACGUCG U UUGGAGGUCUACCUCUCUG^GU A C GA CG UAUAAGG . 110 100 90 80 70