10 20 30 40 50 AAACGCAAGGAUUGAGG---| U G UC G GUGUAU AAGU AGUU UUA UUUGGUUAUCUAGCU UAUGA \ UUCG UCAA AAU AAGCCAAUAGAUCGA AUACU U UUCGAGGAGCUUCUGGGAUC^ - A GA A GCCCGU . 110 100 90 80 70