10 20 30 40 50
GCACAACACGUUCCGAA--| AU A A AGUCA
GGUGACAGUUUGCA GUGACUCAGCU UCUGA C C
CCACUGUUAAACGU CACUGAGUCGA AGACU G C
ACUUCCCUGACUUCGUAAC^ CU C - UAACC
110 100 90 80 70 60