5819
Deletion or substitution of a putative NF-kappaB binding site identified in the bcl-x promoter significantly decreased Tax -induced transactivation .
 ( protein: Tax, None) , ( DNA: bcl-x promoter, None) , ( protein: NF-kappaB, None) , ( protein: putative NF-kappaB binding 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: Tax, None) , ( DNA: bcl-x promoter, None) , ( protein: NF-kappaB, None) , ( protein: putative NF-kappaB binding site, None) 