4810
The binding activity of transcription factor AP-1 , which consists of dimers of Fos and Jun family proteins , was also studied using a gel shift assay .
 ( protein: 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:
 ( protein: AP-1, None) 