10         20         30        40        50          
GCUCCAUAUCCCUUUCC-   -|                   U           UUACCUU 
                  CAG GGGGAGGGGCUGGGUUUCCA UGGGAGAACUU       \
                  GUC CCCCUCCCCGACCCAAAGGU ACCCUCUUGGA       G
CACAUCCCAACUCCGUCC   U^                   U           GGGUCAA 
 .       110       100        90        80        70