916
LBF3 , LBF5 , LBF6 , or LBF7 may also be involved, since their binding sites also contribute to EBNA-2 responsiveness .
 ( protein: LBF5, None) , ( protein: LBF6, None) , ( protein: LBF3, None) , ( protein: LBF7, None) , ( protein: EBNA-2, 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: LBF5, None) , ( protein: LBF6, None) , ( protein: LBF3, None) , ( protein: LBF7, None) , ( protein: EBNA-2, None) 