2568
We found that transactivation of the HIV-1 LTR by v-src was more sensitive to mutations of the proximal, rather than the distal, kappa B element .
 ( DNA: v-src, None) , ( DNA: HIV-1 LTR, None) , ( DNA: kappa B element, 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: v-src, None) , ( DNA: HIV-1 LTR, None) , ( DNA: kappa B element, None) 