4079
To confirm the importance of the three cis-acting elements in the perforin gene expression , point mutation was introduced again to each proximal GC box , EBS , and GT box of PFP5a .
 ( DNA: GC box, None) , ( DNA: perforin gene, None) , ( DNA: proximal GC box, None) , ( protein: perforin, None) , ( DNA: GT box, None) , ( DNA: cis-acting elements, None) , ( DNA: EBS, None) , ( DNA: PFP5a, 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: GC box, None) , ( DNA: perforin gene, None) , ( DNA: proximal GC box, None) , ( protein: perforin, None) , ( DNA: GT box, None) , ( DNA: cis-acting elements, None) , ( DNA: EBS, None) , ( DNA: PFP5a, None) 