8667
Previous studies found that P1 , an element of the interleukin 4 ( IL-4 ) promoter that binds AP-1, is important for Th2-restricted IL-4 expression .
 ( protein: IL-4, None) , ( protein: IL-4, None) , ( DNA: P1, None) , ( DNA: interleukin 4 ( IL-4 ) 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: IL-4, None) , ( protein: IL-4, None) , ( DNA: P1, None) , ( DNA: interleukin 4 ( IL-4 ) promoter, None) 