10691
This novel target site , denoted the C-site , was shown by several criteria, including cell distribution studies, stimulation experiments , supershift assays , and cross-competition electrophoretic mobility shift assays to bind the transcription factor AP-1 .
 ( DNA: C-site, None) , ( DNA: novel target site, None) , ( protein: transcription factor AP-1, 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: C-site, None) , ( DNA: novel target site, None) , ( protein: transcription factor AP-1, None) 