608
Mutation of a 20-base pair sequence of the gamma-gene 5'-untranslated region ( UTR ) led to derepression of beta-promoter activity .
 ( DNA: beta-promoter, None) , ( DNA: gamma-gene 5#$%#-untranslated region, None) , ( DNA: UTR, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: beta-promoter, None) , ( DNA: gamma-gene 5#$%#-untranslated region, None) , ( DNA: UTR, None) 