1347
Therefore, we propose that the TPA / calcium -activated AP-1 /OAP element is the main target of positive or negative regulatory signals influencing the IL-2 octamer motif , through synergism with Oct-2 and antagonism by RAR .
 ( protein: Oct-2, None) , ( DNA: IL-2 octamer motif, None) , ( protein: RAR, None) , ( protein: IL-2, None) , ( protein: AP-1, None) , ( protein: /OAP, 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: Oct-2, None) , ( DNA: IL-2 octamer motif, None) , ( protein: RAR, None) , ( protein: IL-2, None) , ( protein: AP-1, None) , ( protein: /OAP, None) 