10 20 30 40 50 CGGGUGAGCUGCGCCGU-- G --| U U C UUGCA CCUUGGU CUUUC AGCU CU UACAGUGCUGC UUG U GGAACCA GAAAG UCGG GA AUGUUACGACG AAC U AGGGGUCUCCUUCGUUUUU A UA^ - C - UGUAC . 110 100 90 80 70 60