8104
However, the Ets protein (s) that regulated GPIX promoter expression was unknown.
 ( protein: Ets protein, None) , ( DNA: GPIX 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 protein, None) , ( DNA: GPIX promoter, None) 