1295
Only p50 NF-kappa B protein bound the kappa B element of interleukin-2 receptor ( IL-2R ) alpha chain promoter on resting T cells .
 ( protein: p50 NF-kappa B protein, None) , ( cell type: T cells, None) , ( DNA: interleukin-2 receptor ( IL-2R ) alpha chain promoter, None) , ( protein: IL-2R, None) , ( protein: interleukin-2 receptor, None) , ( DNA: kappa B element, 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: p50 NF-kappa B protein, None) , ( cell type: T cells, None) , ( DNA: interleukin-2 receptor ( IL-2R ) alpha chain promoter, None) , ( protein: IL-2R, None) , ( protein: interleukin-2 receptor, None) , ( DNA: kappa B element, None) 