10 20 30 40 50 CCAUCCUCCAAAUCCAA--| GC U G A UUCUCU GCCUGCUGGGU AGUGGUUCU AACA UUCA CAG \ CGGGCGGCCUA UCACCAGGA UUGU AAGU GUU A AGGUCGUACACAACGGACC^ GU U A - AAUAUU . 110 100 90 80 70