10 20 30 40 50 CUGAUUCCUGGCACCUUCUGAA-- -| G U UCUUA AGCCAGUGUGG UGAGCGGCG CG GGCAAAUC \ UUGGUUACACC ACUCGUUGC GC UUGUUUAG U AAAAAAAGAAUUUUAAGGAGUAGG U^ - - GAGAA . 110 100 90 80 70