10 20 30 40 50 UUGGGGAGCUCCUGAGAAAA--| UG C U AGAAAUG GAGGACAUUU CCCAGAUC GUGGCCUA UC \ CUCCUGUAAA GGGUCUAG CGCCGGAU AG U AGUGGAAGAAACCAGUGUCUUC^ GU A U UGUCCGG . 110 100 90 80 70