10 20 30 40 50 UCAGUCAGCGGGUGACA- G-| C A C U GUUACC GA CCAC CAGG CU CUGACUCCAGGUCC GUGU U CU GGUG GUCC GA GACUGAGGUUCAGG CACG C AGUCUCUCACCCCUUCCG GA^ A G A U AUAAAG . 110 100 90 80 70 60