10 20 30 40 50 CGGAUCCCACGGAGAUCA- G U - -| UGUAAUU CG CUGCCC UG UCAUUUUUGUGAUU UGCAGCU \ GU GACGGG AC AGUGAAAACACUGA ACGUUGA U UCGGUUGCGCCGCGACGGG G U U U^ CUCUGGU . 110 100 90 80 70 60