10 20 30 40 50 CUGUGUCGGGUUCAGCU- -| G A ACUA U UGCUGCU CC AGAAGCAGGU AGCC CUG ACGCACA UG \ GG UUUUCGUCCA UCGG GAC UGCGUGU AC A UUCCCCUGUGUCACUAUA C^ A C AGUG C CCCUGUG . 110 100 90 80 70