10 20 30 40 50 UCAAAGGCUUCUGUGAC- UAGAGG-| UUU C GUCAAU CCCU AUGACUGAUUUC UGGUGUU AGA \ GGGG UAUUGGCUAAAG ACCACGA UCU A GACGAUGUGCCACGAUAA UUAGUAA^ UUU - UUUACU . 110 100 90 80 70