14590
The IL-2R alpha enhancer binds NF-kappa B poorly and is only weakly activated by the NF-kappa B site alone.
 ( protein: IL-2R alpha, None) , ( protein: NF-kappa B, None) , ( DNA: IL-2R alpha enhancer, None) , ( DNA: NF-kappa B site, 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-2R alpha, None) , ( protein: NF-kappa B, None) , ( DNA: IL-2R alpha enhancer, None) , ( DNA: NF-kappa B site, None) 