6987
Transcription factors USF1 and USF2 up-regulate gene expression (i.e., HIV-1 long terminal repeats ) via interaction with an E box on their target promoters, which is also a binding site for c-Myc .
 ( DNA: E box, None) , ( protein: Transcription factors, None) , ( protein: USF1, None) , ( protein: c-Myc, None) , ( protein: USF2, None) , ( DNA: HIV-1 long terminal repeats, None) , ( DNA: binding 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: E box, None) , ( protein: Transcription factors, None) , ( protein: USF1, None) , ( protein: c-Myc, None) , ( protein: USF2, None) , ( DNA: HIV-1 long terminal repeats, None) , ( DNA: binding site, None) 