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