10 20 30 40 50 UUAGUGCUGGUAAUUGUG-- G U --| U U C UAUCA CUCUGU CU UC AGCU CU UACAGUGCUGC UUG U GAGACA GG AG UCGG GA AUGUUACGACG AAC C ACUCCUCUUCUGCUGAUCUA A U UA^ - C - UGUAU . 110 100 90 80 70 60