5669
Mutations of this site that destroyed potential ets transcription factor binding sites had reduced transcriptional activity .
 ( protein: ets transcription factor, None) , ( DNA: ets transcription factor binding sites, 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:
 ( protein: ets transcription factor, None) , ( DNA: ets transcription factor binding sites, None) 