10125
We previously detected a tissue-specific promoter preceding the exon encoding the N terminus of the pp52 leukocyte protein .
 ( protein: N terminus, None) , ( protein: pp52 leukocyte protein, None) , ( DNA: tissue-specific promoter, 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: N terminus, None) , ( protein: pp52 leukocyte protein, None) , ( DNA: tissue-specific promoter, None) 