10 20 30 40 50 GCAAAAGAAGAAACAACA-- CU A C -| U CCUGGAA CGAAGA GUAA GAU GGUAC AG GGCUUUGG U GUUUCU UAUU CUA CCAUG UC UCGAAACC G AACGUUUCCGCAACUAUAAG CG C C C^ U UUUAAUG . 110 100 90 80 70 60