14941
Electrophoretic mobility shift assays revealed three specific protein-DNA complexes formed with sequences of the EBNA2 responsive element .
 ( protein: EBNA2, None) , ( DNA: EBNA2 responsive element, None) , ( protein: protein-DNA complexes, 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: EBNA2, None) , ( DNA: EBNA2 responsive element, None) , ( protein: protein-DNA complexes, None) 