12748
Electrophoretic mobility shift assays ( EMSAs ) demonstrated that the -300 region of the IL-1beta promoter, which contains a nuclear factor-kappaB ( NF-kappaB ) binding site , contained a functional RBP binding site .
 ( protein: IL-1beta, None) , ( DNA: functional RBP binding site, None) , ( DNA: nuclear factor-kappaB ( NF-kappaB ) binding site, None) , ( protein: NF-kappaB, None) , ( protein: nuclear factor-kappaB, 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-1beta, None) , ( DNA: functional RBP binding site, None) , ( DNA: nuclear factor-kappaB ( NF-kappaB ) binding site, None) , ( protein: NF-kappaB, None) , ( protein: nuclear factor-kappaB, None) 