10 20 30 40 50 60 AAUGUUCGGUUUUCACU- C U-| G A ACGCCGCAAA GU GG GAGUGGCCGAG UUUC CGUUUUCUAGGCC U CG CU CUCACCGGCUC AAAG GUAAAGGAUCCGG A GCACAUAAACUUUUUACA A UU^ A A UGUUCGACCG . 120 110 100 90 80 70