5940
Within the upstream promoter region of Bcl-x , a potential NF-kappaB -binding sequence was found to support NF-kappaB -dependent transcriptional activation .
 ( protein: NF-kappaB, None) , ( protein: NF-kappaB, None) , ( DNA: upstream promoter region, None) , ( DNA: NF-kappaB -binding sequence, None) , ( protein: Bcl-x, 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: NF-kappaB, None) , ( protein: NF-kappaB, None) , ( DNA: upstream promoter region, None) , ( DNA: NF-kappaB -binding sequence, None) , ( protein: Bcl-x, None) 