10 20 30 40 50 CACUGGAAAGCCUAUGU----| U UU C GUGUC GUAUCC CAGCU GAGAACUGAAUU CAUGGGUU A UAUAGG GUCGA UUCUUGAUUUAA GUGUCCAG G GAGUGCAGGUACUACUGUCUC^ - C- A ACUGU 110 100 90 80 70 60