3201
IL-2R alpha transcription is at least in part controlled by two positive regulatory regions , PRRI and PRRII .
 ( DNA: PRRI, None) , ( protein: positive regulatory regions, None) , ( protein: IL-2R alpha, None) , ( DNA: PRRII, 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:
 ( DNA: PRRI, None) , ( protein: positive regulatory regions, None) , ( protein: IL-2R alpha, None) , ( DNA: PRRII, None) 