10 20 30 40 50 60 NNNNNNNNNACCGACUGA--| U A- C C GCC UGAUC ACCG GUC AGUCGG UUUCGCA UGAUU CAGA C UGGC CGG UCAGCC AAAGUGU ACUAG GUCU U CAGCGACGACGCAGCGAGAC^ - AG A C A-- CCAGU . 110 100 90 80 70