2341
In this study, we have analysed the function of these cis-acting regulatory sites in the context of the native IL-2 enhancer and promoter sequence .
 ( DNA: promoter sequence, None) , ( DNA: cis-acting regulatory sites, None) , ( protein: IL-2, None) , ( DNA: IL-2 enhancer, 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: promoter sequence, None) , ( DNA: cis-acting regulatory sites, None) , ( protein: IL-2, None) , ( DNA: IL-2 enhancer, None) 