8320
In contrast, gp41 failed to stimulate NF-kappaB binding activity in as much as no NF-kappaB bound to the main NF-kappaB -binding site 2 of the IL-10 promoter after addition of gp41 .
 ( DNA: IL-10 promoter, None) , ( protein: NF-kappaB, None) , ( protein: gp41, None) , ( DNA: main NF-kappaB -binding site, None) , ( protein: NF-kappaB, None) , ( protein: IL-10, None) , ( protein: NF-kappaB, None) , ( protein: gp41, 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:
 ( DNA: IL-10 promoter, None) , ( protein: NF-kappaB, None) , ( protein: gp41, None) , ( DNA: main NF-kappaB -binding site, None) , ( protein: NF-kappaB, None) , ( protein: IL-10, None) , ( protein: NF-kappaB, None) , ( protein: gp41, None) 