10 20 30 40 50 GGAAAAGCAGAAAUCUGU--| C U UG AGUGAU AGAUGG GGGGCAAGCCCUUU AUUAUU UAGA C UCUACU CUUCGUUCGGGAAG UAAUAA AUCU U GACUUCCGACAACACGAUAC^ U - CG AGUUAU 110 100 90 80 70 60