10           20        30        40        50     
UAAGUUUUGUCCAGGAGU---|  A  A                  A        AU 
                     GCA GU AUGCAAACUGAAAUAUGC UGCAUCUA  \
                     UGU CA UACGUUUGACUUUAUACG ACGUAGAU  U
CAACUCUGUUUCUCACUCCCU^  -  C                  A        UA 
 .       100        90         80        70        60