2559
These results identify a transcriptional regulatory element associated with a nuclease- hypersensitive site in the pol gene of HIV-1 and suggest that its activity may be controlled by a complex interplay of cis- regulatory elements .
 ( DNA: pol gene, None) , ( DNA: regulatory elements, None) , ( DNA: nuclease- hypersensitive site, None) , ( DNA: transcriptional regulatory element, None) , ( DNA: hypersensitive site, 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: pol gene, None) , ( DNA: regulatory elements, None) , ( DNA: nuclease- hypersensitive site, None) , ( DNA: transcriptional regulatory element, None) , ( DNA: hypersensitive site, None) 