50
IL-2 responsiveness , on the other hand, depends on a 78-nucleotide segment 1.3 kilobases upstream of the major transcription start site .
 ( DNA: major transcription start site, None) , ( protein: IL-2, None) , ( DNA: 78-nucleotide segment, 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: major transcription start site, None) , ( protein: IL-2, None) , ( DNA: 78-nucleotide segment, None) 