5278
Finally, transfection of CREB protein and protein kinase A expression vectors were found to activate Zp in Jurkat cells , suggesting that phosphorylated form of CREB protein can play a determining role in the EBV reactivation process .
 ( DNA: Zp, None) , ( protein: CREB protein, None) , ( DNA: protein kinase A expression vectors, None) , ( cell type: Jurkat cells, None) , ( protein: CREB protein, 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: Zp, None) , ( protein: CREB protein, None) , ( DNA: protein kinase A expression vectors, None) , ( cell type: Jurkat cells, None) , ( protein: CREB protein, None) 