1746
An intricate arrangement of binding sites for the Ets family of transcription factors regulates activity of the alpha 4 integrin gene promoter .
 ( protein: Ets family, None) , ( protein: transcription factors, None) , ( DNA: alpha 4 integrin gene promoter, 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 family, None) , ( protein: transcription factors, None) , ( DNA: alpha 4 integrin gene promoter, None) 