3697
In HeLa nonpituitary cells , c-Jun alone activated the rPRL promoter via the most proximal GHF-1/Pit-1 binding site , footprint I , and synergized with GHF-1 .
 ( protein: GHF-1, None) , ( protein: c-Jun, None) , ( cell line: HeLa nonpituitary cells, None) , ( DNA: rPRL promoter, None) , ( DNA: GHF-1/Pit-1 binding site, None) , ( DNA: footprint I, 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: GHF-1, None) , ( protein: c-Jun, None) , ( cell line: HeLa nonpituitary cells, None) , ( DNA: rPRL promoter, None) , ( DNA: GHF-1/Pit-1 binding site, None) , ( DNA: footprint I, None) 