473
The gene contains a proximal functional promoter region ( -620 to +34 ), as well as a powerful enhancer located 3 kb upstream, both of which are involved in the response of the gene to TCR activation .
 ( DNA: proximal functional promoter region, None) , ( DNA: enhancer, None) , ( DNA: -620 to +34, None) , ( protein: TCR, 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: proximal functional promoter region, None) , ( DNA: enhancer, None) , ( DNA: -620 to +34, None) , ( protein: TCR, None) 