866
DNA-swap experiments using chloramphenicol acetyl-transferase assay demonstrated that androgen can suppress the transcriptional activities of SV40 early promoter via the interaction between this TR2RE- SV40 and the chimeric receptor AR/TR2/AR with the DNA-binding domain of the TR2 orphan receptor flanked by the N-terminal and androgen-binding domains of the androgen receptor .
 ( protein: TR2RE- SV40, None) , ( protein: androgen receptor, None) , ( protein: chloramphenicol acetyl-transferase, None) , ( protein: chimeric receptor AR/TR2/AR, None) , ( protein: DNA-binding domain, None) , ( DNA: SV40 early promoter, None) , ( protein: TR2 orphan receptor, 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: TR2RE- SV40, None) , ( protein: androgen receptor, None) , ( protein: chloramphenicol acetyl-transferase, None) , ( protein: chimeric receptor AR/TR2/AR, None) , ( protein: DNA-binding domain, None) , ( DNA: SV40 early promoter, None) , ( protein: TR2 orphan receptor, None) 