10 20 30 40 50 UUAAAAUGGGAGUGAGU--| AU UUU U AG A UUAAUA AGUGUGGU GU GGUUGC GU AUUAAGU GU \ UCGUACCG CA CCAACG CA UAAUUCA CG U UCGGGACACGCGUCGGGUC^ GU CGU C GA - UCGUAG . 110 100 90 80 70