10 20 30 40 50 GCGAUGUGGUGUGCGCU----| CU G - U U CAGAC CGAG GGC GACU GAGUAU ACA CAGGUACUGAU \ GCUC CCG CUGG CUCAUA UGU GUCUAUGGCUA U AGCUUCCGAAACAACUAACAG^ -- G U - U UAGGU 110 100 90 80 70 60