5027
The functional Ets binding site was found to bind Ets family proteins , principally GA-binding protein and Elf-1 and could be transactivated by GABPalpha and -beta synergistically.
 ( protein: GABPalpha, None) , ( protein: GA-binding protein, None) , ( protein: Elf-1, None) , ( protein: Ets family proteins, None) , ( protein: -beta, None) , ( DNA: Ets binding site, 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: GABPalpha, None) , ( protein: GA-binding protein, None) , ( protein: Elf-1, None) , ( protein: Ets family proteins, None) , ( protein: -beta, None) , ( DNA: Ets binding site, None) 