1758
We conclude that although neither of the two 5'-most Ets sites alone binds nuclear protein , they appear to act as modulators which control the pattern of Ets proteins that bind the alpha 4 gene promoter .
 ( protein: alpha 4, None) , ( DNA: alpha 4 gene promoter, None) , ( protein: nuclear protein, None) , ( protein: Ets proteins, None) , ( DNA: 5#$%#-most Ets sites, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: alpha 4, None) , ( DNA: alpha 4 gene promoter, None) , ( protein: nuclear protein, None) , ( protein: Ets proteins, None) , ( DNA: 5#$%#-most Ets sites, None) 