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