4724
Within this region, an NF-kappaB site at -59 to -50 and its adjacent 20-base pair upstream sequence were demonstrated to play a critical role for the IL-9 promoter activity .
 ( protein: IL-9, None) , ( DNA: NF-kappaB site, None) , ( DNA: -59 to -50, None) , ( DNA: 20-base pair upstream sequence, None) , ( DNA: IL-9 promoter, None) , ( protein: NF-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-9, None) , ( DNA: NF-kappaB site, None) , ( DNA: -59 to -50, None) , ( DNA: 20-base pair upstream sequence, None) , ( DNA: IL-9 promoter, None) , ( protein: NF-kappaB, None) 