8670
However, we show that JunB binds directly to the P1 site and synergizes with c-Maf to activate an IL-4 luciferase reporter gene .
 ( protein: JunB, None) , ( protein: c-Maf, None) , ( DNA: IL-4 luciferase reporter gene, None) , ( protein: IL-4, None) , ( DNA: P1 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: JunB, None) , ( protein: c-Maf, None) , ( DNA: IL-4 luciferase reporter gene, None) , ( protein: IL-4, None) , ( DNA: P1 site, None) 