10 20 30 40 50 CGAUGUUGUGCAUAGCUAC- ACUG-| U U A GUAAUGU GC UGGGCU GACAUCA CCUACUUG GAU \ CG ACCCGG CUGUAGU GGAUGAAC CUG A AUUCCGUACCGUUCUGACGU GUAGA^ U U C AAACGUA . 110 100 90 80 70