10 20 30 40 50 GGAUCUCGGAGGUUUCU--| UG CU U G A UUCUCU GUCUCCC G GAGUGGUUCU AACA UUCA CAG \ CAGGGGG U UUCACCAGGA UUGU AAGU GUU A ACGUGGGAAUCUUCUCUCU^ UU AG U A - AAAGCU . 110 100 90 80 70