2549
A transcriptional regulatory element is associated with a nuclease-hypersensitive site in the pol gene of human immunodeficiency virus type 1 .
 ( DNA: transcriptional regulatory element, None) , ( DNA: nuclease-hypersensitive site, None) , ( DNA: pol gene, 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: transcriptional regulatory element, None) , ( DNA: nuclease-hypersensitive site, None) , ( DNA: pol gene, None) 